Solar cell module, panel and printing data generation device

Abstract

This solar battery module comprises a solar battery module body and a printing layer that is formed in a prescribed region by printing with prescribed transparency on a side closer to a light receiving surface side than the solar battery module body, wherein in at least a part of the prescribed region, a rear surface side can be seen through from the light receiving surface side. The prescribed transparency is set so that the following condition A is satisfied. [Condition A] A spectral sensitivity integral ratio A specified by formula (1) is equal to or more than a prescribed value A* which is a spectral sensitivity integral ratio A at printing with transparency at which a short-circuit current ratio becomes 0.6. λ: wavelength (nm) f(λ): quantum efficiency IPCE where the printing layer is formed (%) fSC(λ): quantum efficiency IPCE (%) where the printing layer is not formed (%)

Description

[Technical Field]

[0001] The present invention relates to a solar cell module, a panel, and a print data generation device. [Background technology]

[0002] BACKGROUND ART Solar cell modules are known in which printing is applied to the light-receiving surface side of the solar cell module body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-216766 Summary of the Invention [Problem to be solved by the invention]

[0004] Such solar cell modules are required to have excellent design and power generation performance.

[0005] A first object of the present invention is to provide a solar cell module that has excellent design and power generation performance.

[0006] A second object of the present invention is to provide a solar cell module suitable for use in combination with the solar cell module that satisfies the first object.

[0007] A third object of the present invention is to provide a panel that includes a solar cell module that satisfies the first or second object and has excellent design.

[0008] Furthermore, a fourth object of the present invention is to provide a printing data generation device suitable for manufacturing a solar cell module corresponding to the first or second object or a panel corresponding to the third object. [Means for solving the problem]

[0009] In response to the first object of the present invention, a solar cell module as a first aspect of the present invention comprises a solar cell module body and a printing layer formed in a predetermined area by printing with a predetermined transparency on the light-receiving surface side of the solar cell module body, and is a solar cell module that allows viewing from the light-receiving surface side to the back side in at least a part of the predetermined area, and the predetermined transparency is set so as to satisfy the following condition A. [Condition A] The spectral sensitivity integral ratio A specified by the following formula (1) is equal to or greater than a predetermined value A*, which is the spectral sensitivity integral ratio A when printed at a transparency such that the short-circuit current ratio is 0.6.

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[0010] With this configuration, printing is performed on the light-receiving surface side, allowing for excellent design that also allows for a view of the back side, and excellent power generation performance with a short-circuit current ratio of 0.6 or more can be obtained even when printing is performed over the entire surface of the specified area.

[0011] Corresponding to the first object of the present invention, a solar cell module as a second aspect of the present invention comprises a solar cell module body and a printing layer formed in a predetermined area on the light-receiving surface side of the solar cell module body by printing in full color, red monochromatic, green monochromatic, or blue monochromatic with a predetermined transparency, wherein the back side is visible from the light-receiving surface side in at least a part of the predetermined area, and the predetermined transparency is set so as to satisfy the following condition B. [Condition B] When the printing layer is full color, the spectral sensitivity integral ratio A is determined by the following formula (2): K is 0.50 or more. When the printing layer is a single red color, the spectral sensitivity integral ratio A is determined by the following formula (3):R is 0.47 or more. When the printing layer is a single green color, the spectral sensitivity integral ratio A is determined by the following formula (4): G is 0.60 or more. When the printing layer is a single blue color, the spectral sensitivity integral ratio A is determined by the following formula (5): B is 0.63 or more.

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[0012] With this configuration, the light-receiving surface is printed in full color, red only, green only, or blue only, allowing for excellent design while still allowing for a see-through view of the back side, and excellent power generation performance with a short-circuit current ratio of 0.6 or more can be obtained even when the entire surface of the specified area is printed.

[0013] Corresponding to the first object of the present invention, a solar cell module as a third aspect of the present invention comprises a solar cell module body, and a printing layer formed in a predetermined region on the light-receiving surface side of the solar cell module body by printing in a single color of red, green, or blue with a predetermined transparency, wherein the back side is visible from the light-receiving surface side in at least a part of the predetermined region, and the predetermined transparency is set so as to satisfy the following condition C: [Condition C] When the printing layer is a single red color, the red specific wavelength spectral sensitivity integral ratio B is determined by the following formula (6): R is 0.18 or more, and the red non-specific wavelength spectral sensitivity integral ratio C specified by the following formula (7) R is 0.29 or more, and the red spectral sensitivity peak ratio P R is 0.70 or more. When the printed layer is a single green color, the green specific wavelength spectral sensitivity integral ratio B is determined by the following formula (9): G is 0.37 or more, and the green non-specific wavelength spectral sensitivity integral ratio C specified by the following formula (10) G is 0.23 or more, and the green spectral sensitivity peak ratio P G is 0.78 or more. When the printing layer is a single blue color, the blue specific wavelength spectral sensitivity integral ratio B is determined by the following formula (12): B is 0.38 or more, and the blue non-specific wavelength spectral sensitivity integrated ratio C B is 0.25 or more, and the blue spectral sensitivity peak ratio P B is 0.77 or more.

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[0014] With this configuration, the light-receiving surface is printed in a single color, red, green, or blue, allowing for excellent design while still allowing for a see-through view of the back side, and even when the specified area is fully printed, excellent power generation performance is achieved with a short-circuit current ratio of 0.6 or more.

[0015] In one embodiment of the present invention, the solar cell module body has a pair of substrates sandwiching at least one power generating cell, and the printed layer is formed on the substrate on the light-receiving surface side. With this configuration, the printed layer can be easily provided on the light-receiving surface side of the solar cell module body.

[0016] In one embodiment of the present invention, the solar cell module body has a pair of substrates sandwiching at least one power generating cell therebetween, and the printed layer is formed on a film attached to the substrate on the light-receiving surface side. With this configuration, the printed layer can be easily provided on the light-receiving surface side of the solar cell module body.

[0017] In one embodiment of the present invention, the film has an adhesive layer that adheres the film to the substrate on the light-receiving side, and the adhesive layer is a film-like pressure-sensitive adhesive sheet that has an ultraviolet filter function that blocks ultraviolet rays with wavelengths shorter than 400 nm. With this configuration, the ultraviolet filter function of the adhesive layer can suppress deterioration of the power generation performance of the solar cell module body due to exposure to ultraviolet rays.

[0018] In one embodiment of the present invention, a print having a transparency and / or a color different from that of the print layer is applied to an area different from the predetermined area on the surface on which the print layer is formed. With this configuration, it is possible to enhance the design.

[0019] In one embodiment of the present invention, the solar cell module body is formed of a dye-sensitized solar cell. With this configuration, excellent power generation performance can be more reliably obtained.

[0020] Corresponding to the second object of the present invention, a solar cell module according to a fourth aspect of the present invention comprises a solar cell module body and a printed layer formed in a predetermined region by printing with a predetermined transparency on a back side, which is opposite the light-receiving side from the solar cell module body, and which allows the light-receiving side to be seen through from the back side in at least a part of the predetermined region, and when the printed layer is provided on the light-receiving side instead of the back side, the predetermined transparency is set to satisfy at least one of condition A of claim 1, condition B of claim 2, and condition C of claim 3. According to this configuration, printing with a transparency equivalent to that of the solar cell module corresponding to the first object is applied to the back side, and the light-receiving side can also be seen through, thereby achieving an excellent design suitable for use in combination with the solar cell module corresponding to the first object.

[0021] Corresponding to the third object of the present invention, a panel according to a fifth aspect of the present invention includes the solar cell module and a sheet to which a portion of the solar cell module is attached, the sheet having a printing layer formed in an area different from the portion and having printing formed across the printing layer of the solar cell module. With this configuration, it is possible to perform printing on a large screen that combines the printing layer of the solar cell module and the printing layer of the sheet, thereby achieving excellent design.

[0022] Corresponding to the fourth object of the present invention, a print data generation device as a fifth aspect of the present invention is a print data generation device that generates print data for printing only a portion of a predetermined image on the solar cell module, and includes a data processing unit that obtains print data corresponding to the portion of the predetermined image from data corresponding to the predetermined image in order to form the printing layer. With this configuration, print data corresponding to the solar cell module can be easily obtained, and therefore print data for printing only a portion of the predetermined image on the solar cell module can be easily generated.

[0023] Corresponding to the fourth object of the present invention, a sixth aspect of the present invention provides a print data generation device that generates print data for printing a predetermined image on the panel, and includes a data processing unit that obtains print data corresponding to a portion of the predetermined image from data corresponding to the predetermined image in order to form the printing layer of the solar cell module that displays only a portion of the predetermined image, and obtains print data corresponding to another portion of the predetermined image from data corresponding to the predetermined image in order to form the printing layer of the sheet that displays only another portion of the predetermined image. With this configuration, print data corresponding to each of the solar cell module and the sheet can be easily obtained, making it possible to easily generate print data for printing the predetermined image on the panel. [Effects of the Invention]

[0024] According to the present invention, it is possible to provide a solar cell module that satisfies the first object.

[0025] According to the present invention, it is possible to provide a solar cell module that satisfies the second object.

[0026] According to the present invention, a panel that satisfies the third object can be provided.

[0027] According to the present invention, it is possible to provide a print data generating device that satisfies the fourth object above. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is an exploded perspective view of a solar cell module according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the solar cell module body shown in FIG. [Figure 3] 2 shows micrographs of the printed layer of the solar cell module shown in FIG. 1, in which red, green, blue, and black are printed on the entire surface with different transparency rates. [Figure 4] 4 is a micrograph showing an enlarged portion of FIG. 3. [Figure 5A] 2 is a graph showing normalized IV characteristics measured when the solar cell module shown in FIG. 1 is fully printed in red with different transparency rates. [Figure 5B] 2 is a graph showing IPCE characteristics measured when red monochrome printing is applied to the entire surface of the solar cell module shown in FIG. 1 at different transparency rates. [Figure 6A] 2 is a graph showing normalized IV characteristics measured when green monochrome printing is applied to the entire surface of the solar cell module shown in FIG. 1 at different transparency rates. [Figure 6B] 2 is a graph showing IPCE characteristics measured when green monochrome printing is applied to the entire surface of the solar cell module shown in FIG. 1 at different transparency rates. [Figure 7A]2 is a graph showing normalized IV characteristics measured when the solar cell module shown in FIG. 1 is fully printed with a single color of blue at different transparency rates. [Figure 7B] 2 is a graph showing IPCE characteristics measured when a blue monochrome print is applied to the entire surface of the solar cell module shown in FIG. 1 at different transparency rates. [Figure 8A] 2 is a graph showing normalized IV characteristics measured when the solar cell module shown in FIG. 1 is fully printed in black with different transparency rates. [Figure 8B] 2 is a graph showing IPCE characteristics measured when the solar cell module shown in FIG. 1 is fully printed in black with different transparency rates. [Figure 9] 5A, 6A, 7A, and 8A, and is a graph showing the transparency on the horizontal axis and the normalized short-circuit current on the vertical axis. [Figure 10] 5C is a graph created based on the measurement data shown in FIG. 5B, showing the transmittance on the horizontal axis and the spectral sensitivity integrated ratio AR, the red specific wavelength spectral sensitivity integrated ratio BR, and the red non-specific wavelength spectral sensitivity integrated ratio CR on the vertical axis. [Figure 11] 6C is a graph created based on the measurement data shown in FIG. 6B, showing the transmittance on the horizontal axis and the spectral sensitivity integral ratio AG, the green specific wavelength spectral sensitivity integral ratio BG, and the green non-specific wavelength spectral sensitivity integral ratio CG on the vertical axis. [Figure 12] 7C is a graph created based on the measurement data shown in FIG. 7B, showing the transmittance on the horizontal axis and the spectral sensitivity integrated ratio AB, the blue specific wavelength spectral sensitivity integrated ratio BB, and the blue non-specific wavelength spectral sensitivity integrated ratio CB on the vertical axis. [Figure 13] 2 is a graph showing the IPCE characteristics measured for the solar cell module shown in FIG. 1 with a red monochromatic print applied over the entire surface at a transparency of 50% and without any print. [Figure 14] 2 is a graph showing the IPCE characteristics measured for the solar cell module shown in FIG. 1 with a green monochromatic print applied over the entire surface at a transparency of 50% and without any print. [Figure 15]2 is a graph showing the IPCE characteristics measured for the solar cell module shown in FIG. 1 with a blue monochromatic print applied over the entire surface at a transparency of 50% and without any print. [Figure 16] 2 is a graph showing the IPCE characteristics measured for the solar cell module shown in FIG. 1 with black printing applied to the entire surface at a transparency of 58% and without printing. [Figure 17] 2 is a plan view showing a printing procedure when two types of printing are performed on the solar cell module shown in FIG. 1. FIG. [Figure 18] FIG. 10 is an exploded perspective view of a solar cell module according to a second embodiment of the present invention. [Figure 19] 1A to 1C are plan views showing a manufacturing procedure for a panel according to an embodiment of the present invention. [Figure 20] 1 is a block diagram illustrating a print data generating device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0029] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A solar cell module, a panel, and a print data generating device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] 1, the solar cell module 1 according to the first embodiment of the present invention includes a solar cell module body 2 and a printed layer 3 formed in a predetermined area by printing with a predetermined transparency T on the light-receiving surface side of the solar cell module body 2. In this embodiment, the predetermined area on which the printed layer 3 is formed is the entire area of ​​the solar cell module body 2 (i.e., the entire light-receiving surface).

[0031] More specifically, as shown in Fig. 2, the solar cell module body 2 has a pair of substrates 2b sandwiching a plurality of power generating cells 2a therebetween, and the printed layer 3 is formed on a film 4 attached to the light-receiving surface side of the substrate 2b. The number of power generating cells 2a is 12. However, the number of power generating cells 2a may be one or more.

[0032] The solar cell module 1 has an adhesive layer 5 that adheres the film 4 onto the substrate 2b on the light-receiving side, and the adhesive layer 5 is a film-like pressure-sensitive adhesive sheet that has an ultraviolet filter function that blocks ultraviolet rays with wavelengths shorter than 400 nm.

[0033] As shown in Fig. 2, the solar cell module main body 2 is composed of dye-sensitized solar cells. In other words, the solar cell module main body 2 is composed of a plurality of dye-sensitized power generation cells 2a. Solar cells are photoelectric conversion elements that convert light energy into electricity, and in addition to dye-sensitized solar cells, there are also silicon solar cells and the like. However, dye-sensitized solar cells have the advantages of being lightweight, having a wide range of illuminance in which they can generate electricity stably, requiring small-scale manufacturing facilities, and being able to be manufactured using inexpensive materials.

[0034] Each power generation cell 2a has a pair of conductive films 2c formed on the inner surfaces of a pair of substrates 2b, a porous semiconductor layer 2d formed on the inner surface of the conductive film 2c on the light-receiving surface side, a catalyst layer 2e formed on the inner surface of the conductive film 2c on the back side opposite the light-receiving surface side, and a charge transport layer 2f formed between the porous semiconductor layer 2d and the catalyst layer 2e.

[0035] The plurality of power generating cells 2a are isolated from one another by a non-conductive adhesive layer 2g that bonds the pair of substrates 2b together, and are connected in series by a wiring structure 2h formed within the adhesive layer 2g. As shown in FIG. 1, current collecting electrodes 2i are formed at both ends and in the middle of the row of power generating cells 2a formed by connecting the plurality of power generating cells 2a in series. Furthermore, as shown in FIG. 2, terminals 2j for extracting electric power are formed at both ends of the row of power generating cells 2a. The arrangement of the current collecting electrodes 2i and terminals 2j can be changed as appropriate. Alternatively, they may not be provided.

[0036] The pair of substrates 2b, the pair of conductive films 2c, the charge transport layer 2f, and the adhesive layer 2g are transparent enough to transmit visible light.

[0037] Each substrate 2b is formed of, but is not limited to, resin, glass, metal (titanium, SUS, aluminum, etc.), or any combination thereof. Examples of resins for forming the substrates 2b include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), syndiotactic polystyrene (SPS), polyphenylene sulfide (PPS), polycarbonate (PC), polyarylate (PAr), polysulfone (PSF), polyester sulfone (PES), polyetherimide (PEI), cycloolefin polymer (COP), and transparent polyimide (PI). Of these, polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) are preferred. These resins may be used alone or in combination of two or more.

[0038] Each conductive film 2c has conductivity. Each conductive film 2c is not particularly limited, but may be formed of, for example, a metal such as platinum, gold, silver, copper, aluminum, indium, or titanium; a conductive metal oxide such as tin oxide or zinc oxide; a composite metal oxide such as indium-tin oxide (ITO), indium-zinc oxide (IZO), or fluorine-doped tin (FTO); or a carbon material such as carbon nanotubes or graphene. These materials may be used alone or in combination of two or more.

[0039] The charge transport layer 2f can replenish electrons to the oxidized sensitizing dye adsorbed to the porous semiconductor layer 2d by receiving electrons from the catalyst layer 2e. The charge transport layer 2f is formed, for example, from a hole transport material such as polycarbazole, an electron transport material such as tetranitrofluorenone, a conductive polymer such as polyol, an ionic conductor such as a liquid electrolyte or a polymer electrolyte, or a p-type semiconductor such as copper iodide or copper thiocyanate. Examples of liquid ionic conductors include iodine-based ionic conductors obtained by dissolving iodine, an alkali salt such as lithium iodide or potassium iodide, and an ionic liquid such as dimethylpropylimidazolium iodide or tetrapropylammonium iodide in a solvent such as propylene carbonate, ethanol, γ-butyrolactone, acetonitrile, propionitrile, or 3-methoxypropionitrile. These materials may be used alone or in combination.

[0040] The adhesive layer 2g can be formed of, for example, a thermoplastic resin, a thermosetting resin, or an actinic radiation (light, electron beam) curable resin, more specifically, an acrylic resin, a methacrylic resin, a fluororesin, a silicone resin, an olefin resin, or a polyamide resin. These materials may be used alone or in combination of two or more. These may contain 0.001 to 50 volume % of silica, talc, alumina, titanium oxide, aluminum hydroxide, or any combination thereof, with a median particle size of 0.001 to 10 μm.

[0041] The wiring structure 2h included in the adhesive layer 2g can be formed, for example, from metal particles such as Ag, Au, Cu, Al, In, Sn, Bi, or Pb, or oxides thereof; conductive carbon particles; or organic or inorganic compound particles such as resin particles, whose surfaces are coated with a conductive material such as a metal such as Ag, Au, or Cu, or an oxide of such a metal, for example, particles coated with an Au / Ni alloy. These materials may be used alone or in combination. The wiring structure 2h may be provided separately from the adhesive layer 2g.

[0042] The porous semiconductor layer 2d is formed of a porous semiconductor to allow good adsorption of the sensitizing dye. The porous semiconductor layer 2d is a semiconductor particle layer formed of particles of an oxide semiconductor such as titanium oxide. However, the porous semiconductor layer 2d may be a semiconductor particle layer formed of particles of an oxide semiconductor other than titanium oxide, or may be formed of a material other than a semiconductor particle layer. Examples of semiconductor particles for forming the semiconductor particle layer include particles of oxide semiconductors such as titanium oxide, zinc oxide, or tin oxide. These materials may be used alone or in combination of two or more.

[0043] The porous semiconductor layer 2d supports a sensitizing dye. Examples of the sensitizing dye include organic dyes and metal complex dyes. Examples of the organic dye include azo dyes, cyanine dyes, merocyanine dyes, oxonol dyes, xanthene dyes, squarylium dyes, polymethine dyes, coumarin dyes, riboflavin dyes, and perylene dyes. Examples of the metal complex dye include phthalocyanine complex dyes or porphyrin complex dyes of metals such as iron, copper, and ruthenium, as well as ruthenium bipyridine complex dyes. The above dye materials may be used alone or in combination of two or more.

[0044] The catalyst layer 2e is not particularly limited, and may be formed of a catalyst such as a conductive polymer, a carbon nanostructure, particles or thin film of a noble metal, or a mixture of carbon nanostructures and noble metal particles. Examples of the conductive polymer include polythiophenes such as poly(thiophene-2,5-diyl), poly(3-butylthiophene-2,5-diyl), poly(3-hexylthiophene-2,5-diyl), or poly(2,3-dihydrothieno-[3,4-b]-1,4-dioxin) (PEDOT), polyacetylene or a derivative thereof, polyaniline or a derivative thereof, polypyrrole or a derivative thereof, or poly(p Examples of the carbon nanostructure include natural graphite, carbon black, acetylene black, ketjen black, activated carbon, artificial graphite, graphene, carbon nanotubes, and carbon nanobuds. Examples of the noble metal particles include platinum, palladium, and ruthenium. These materials may be used alone or in combination of two or more. The catalyst layer 2e may optionally contain a dispersant and / or a binder.

[0045] The solar cell module 1 is configured so that the back side can be seen through from the light-receiving surface side in at least a part of the predetermined region where the printing layer 3 is formed. Here, "see-through" means that at least one of the elements of shape, pattern, and color that make up the form of the background located on the opposite side of the solar cell module 1 can be visually recognized.

[0046] A plurality of types of solar cell modules 1 according to this embodiment were produced, each with a different transparency T and color. These solar cell modules 1 were produced by inputting a predetermined transparency T into a general-purpose printing machine (Fuji Xerox ApeosPort C3373 L-4G4F-10A, https: / / www.fujixerox.co.jp / support / manual / mf / ap7_c7773 / manu.html) and performing full-surface printing in red, green, blue, and black, respectively.

[0047] An example of the fabricated solar cell module 1 is shown in Figure 3. Figure 3 shows a set of the appearance of the solar cell module 1 and a micrograph of the printed layer 3. Figure 4 shows an enlarged view of a portion of the micrograph shown in Figure 3.

[0048] In Figures 3 and 4 and other figures, R means full red monochromatic printing, G means full green monochromatic printing, B means full blue monochromatic printing, and K means full black monochromatic printing, and the numbers following these letters indicate the transparency T as a percentage. For example, R80 indicates full red monochromatic printing with a transparency T of 80%. In the following explanation, SC means no printing.

[0049] The full black print was formed by a black pigment when the transparency T=0%, and by a mixture of red, green, and blue (a mixture of cyan, magenta, and yellow pigments) when the transparency T was other than that. The full red print was formed by a mixture of magenta and yellow pigments. The full green print was formed by a mixture of yellow and cyan pigments. The full blue print was formed by a mixture of cyan and magenta pigments.

[0050] The print was formed by dots arranged in a grid pattern at equal intervals both vertically and horizontally, with each dot forming a cluster of pigments of the required color. For example, in the case of black, which is a mixture of colors, each dot formed a cluster of pigments of the three colors mentioned above. The distance between dots (the distance between the centers of dots) was approximately 130 μm both vertically and horizontally. The amount of pigment clustered into each dot was linked to the transparency T, with the smaller the transparency T, the greater the cluster amount.

[0051] In this way, printing performed with a predetermined transparency T by a general printing machine (also called transparent printing) is halftone printing (screen printing) with a density corresponding to the transparency T.

[0052] In addition, for the various types of solar cell modules 1 produced as described above, the irradiation intensity was set to 1 SUN (100 mW / cm 2 ), and the current-voltage characteristics (IV characteristics) were measured. The results are shown in Figures 5A, 6A, 7A, and 8A as normalized IV characteristics, which show the normalized current value obtained by dividing the current value at each transparency T by the current value at transparency T = 100% (i.e., no printing). Note that Figure 5A shows the results for red printing, Figure 6A for green, Figure 7A for blue, and Figure 8A for black printing. The IV characteristics were measured using a solar simulator "PEC-L15" manufactured by Peccell Technologies and an IV characteristics measurement device "PECK2400-N" manufactured by Peccell Technologies.

[0053] Furthermore, the IPCE characteristics (IPCE: quantum efficiency, incident photon to current conversion efficiency) were measured for several types of solar cell modules 1 fabricated as described above. The results are shown in Figures 5B, 6B, 7B, and 8B. Note that Figure 5B shows the results for red printing, Figure 6B for green, Figure 7B for blue, and Figure 8B for black printing. The IPCE characteristics were measured using a solar cell spectral response measurement system consisting of the control software "W32-B2900SOLAS" manufactured by System House Sunrise, the measuring device "B2901A" manufactured by Keysight Technologies, and the monochromatic light source "MLS-1510" manufactured by Asahi Spectroscopy.

[0054] The relationship between the transparency T calculated from the IV characteristics measured as described above and the normalized short-circuit current is shown in Figure 9. From the relationship shown in Figure 9, it can be seen that if the transparency T is 0.5 or higher, the normalized short-circuit current, i.e., the short-circuit current ratio, is 0.6 or higher for all of the red, green, and blue single-color full-printing. Furthermore, from the relationship shown in Figure 9, it can be seen that for the black full-printing, if the transparency T is 0.58 or higher, the short-circuit current ratio is 0.6 or higher.

[0055] It is generally known that there is the following relationship between short circuit current density and IPCE:

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[0056] Therefore, theoretically, the short circuit current ratio I for red single color full print, green single color full print, blue single color full print, and black single color full print is I R =J R / J SC , I G =J G / J SC , I B =J B / J SC , I K =J K / J SC From the above relationship, it can be expressed by the following formula. R is the short circuit current density in red monochromatic full-surface printing, and J G is the short circuit current density in green monochromatic full-surface printing, and J B is the short circuit current density in blue monochromatic full-surface printing, and J K is the short circuit current density in full black printing.

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[0057] Here, the spectral sensitivity integral ratio A limited to the wavelength range of 400 nm to 700 nm, which is the wavelength range in which the dye-sensitized solar cell can stably generate power, is defined as follows.

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[0058] As shown above, the spectral sensitivity integral ratio A when the transparency T=50% can achieve a short-circuit current ratio of 0.6 or more with red monochromatic full-surface printing. R A is R50 corresponds to the normalized value obtained by dividing the area of ​​the hatched portion shown in FIG. 13 by the area when no printing was performed, and was calculated to be 0.47.

[0059] As shown above, the spectral sensitivity integral ratio A when the transparency T=50% can achieve a short-circuit current ratio of 0.6 or more with green monochrome full-surface printing. G A is G50 corresponds to the normalized value obtained by dividing the area of ​​the hatched portion shown in FIG. 14 by the area without printing, and was calculated to be 0.60.

[0060] As shown above, the spectral sensitivity integral ratio A when the transparency T=50% can achieve a short-circuit current ratio of 0.6 or more with blue monochromatic full-surface printing. B A is B50 corresponds to the normalized value obtained by dividing the area of ​​the hatched portion shown in FIG. 15 by the area without printing, and was calculated to be 0.63.

[0061] As shown above, the spectral sensitivity integral ratio A when the transparency T=58% can achieve a short-circuit current ratio of 0.6 or more with full black printing. K A is K58 corresponds to the normalized value obtained by dividing the area of ​​the hatched portion shown in FIG. 16 by the area when no printing was performed, and was calculated to be 0.50.

[0062] Therefore, when forming a printing layer 3 in a predetermined area by printing in full color, red monochromatic, green monochromatic, or blue monochromatic with a predetermined transparency T on the light-receiving surface side of the solar cell module body 2, a short-circuit current ratio of 0.6 or more can be achieved by setting the predetermined transparency T so that the following condition B is satisfied. [Condition B] When the printing layer 3 is full color, the spectral sensitivity integral ratio A specified by the above formula (2) K is 0.50 or more. When the printing layer 3 is a single red color, the spectral sensitivity integral ratio A specified by the above formula (3) R is 0.47 or more. When the printing layer 3 is a single green color, the spectral sensitivity integral ratio A specified by the above formula (4) G is 0.60 or more. When the printing layer 3 is a single blue color, the spectral sensitivity integral ratio A specified by the above formula (5) B is 0.63 or more.

[0063] In addition, specific wavelength intervals are defined for each RGB color as follows: Red specific wavelength range: 610±50nm Green specific wavelength range: 530±50nm Blue specific wavelength range: 480±50nm

[0064] And the red specific wavelength spectral sensitivity integral ratio B R , red non-specific wavelength spectral sensitivity integral ratio C R , red spectral sensitivity peak ratio P R , green specific wavelength spectral sensitivity integral ratio B G , green non-specific wavelength spectral sensitivity integral ratio C G , green spectral sensitivity peak ratio P G , blue specific wavelength spectral sensitivity integral ratio B B , blue non-specific wavelength spectral sensitivity integral ratio C B , blue spectral sensitivity peak ratio P B is defined as follows:

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[0065] As mentioned above, when red monochromatic full-surface printing is performed, the red specific wavelength spectral sensitivity integral ratio B R50 = 0.18, and the red non-specific wavelength spectral sensitivity integral ratio C R50 = 0.29, and the red spectral sensitivity peak ratio P R50 = 0.70. In addition, in the red specific wavelength range, f R The position where (λ) peaks is indicated by a double-headed arrow.

[0066] As mentioned above, when green monochromatic full-surface printing is performed, the data shown in Figure 14, which shows the data when the transparency T is 50%, which is the data that can achieve a short-circuit current ratio of 0.6, is calculated as follows: G50 = 0.37, and the green non-specific wavelength spectral sensitivity integral ratio C G50 =0.23, and the green spectral sensitivity peak ratio P G50 = 0.78. In addition, in the specific wavelength range of green, f G The position where (λ) peaks is indicated by a double-headed arrow.

[0067] As mentioned above, when the blue monochromatic full-surface printing is performed, the blue specific wavelength spectral sensitivity integral ratio B B50 = 0.38, and the blue non-specific wavelength spectral sensitivity integral ratio C B50 =0.25, and the blue spectral sensitivity peak ratio P B50 = 0.77. In addition, in the blue specific wavelength range, f B The position where (λ) peaks is indicated by a double-headed arrow.

[0068] Therefore, when forming a printing layer 3 in a predetermined area by printing in a single color of red, green, or blue with a predetermined transparency T on the light-receiving surface side of the solar cell module body 2, a short-circuit current ratio of 0.6 or more can be achieved by setting the predetermined transparency T so that the following condition C is satisfied. [Condition C] When the printing layer 3 is a single red color, the red specific wavelength spectral sensitivity integral ratio B specified by the above formula (6) R is 0.18 or more, and the red non-specific wavelength spectral sensitivity integral ratio C specified by the above formula (7) R is 0.29 or more, and the red spectral sensitivity peak ratio P R is 0.70 or more. When the printing layer 3 is a single green color, the green specific wavelength spectral sensitivity integral ratio B specified by the above formula (9) G is 0.37 or more, and the green non-specific wavelength spectral sensitivity integral ratio C specified by the above formula (10) G is 0.23 or more, and the green spectral sensitivity peak ratio P G is 0.78 or more. When the printing layer 3 is a single blue color, the blue specific wavelength spectral sensitivity integral ratio B B is 0.38 or more, and the blue non-specific wavelength spectral sensitivity integral ratio C specified by the above formula (13) B is 0.25 or more, and the blue spectral sensitivity peak ratio P B is 0.77 or more.

[0069] Furthermore, the conditions for obtaining excellent power generation performance capable of achieving a short-circuit current ratio of 0.6 as described above can be generalized as follows: That is, when printing layer 3 is formed in a predetermined region by printing with a predetermined transparency T on the light-receiving surface side of solar cell module body 2, a short-circuit current ratio of 0.6 or more can be achieved by setting the predetermined transparency T so that the following condition A is satisfied. [Condition A] The spectral sensitivity integral ratio A specified by the following formula (1) is equal to or greater than a predetermined value A*, which is the spectral sensitivity integral ratio A when printed at a transparency T at which the short-circuit current ratio is 0.6.

number

[0070] Furthermore, the see-through capability was evaluated for the various types of solar cell modules 1 produced as described above. For this evaluation, a sheet with a red, green, blue, or black pattern printed thereon was placed on the back side of the solar cell module 1 as a background, and the evaluation was based on whether or not the sheet was visible from the light-receiving surface side of the solar cell module 1. The evaluation was a subjective evaluation by human visual inspection. As a result, solar cell modules 1 with full red, full green, and full blue monochromatic printing were all visible even at a transparency rate T of 0%. Furthermore, solar cell modules 1 with full black printing were not visible at a transparency rate T of 0%, but were visible at a transparency rate T of 20% or higher.

[0071] Therefore, based on the results of this evaluation of the possibility of seeing through, if the transparency T is such that excellent power generation performance can be achieved, with a short-circuit current ratio of 0.6 or more, that is, if the transparency T is ≧50% for full red monochromatic printing, full green monochromatic printing, and full blue monochromatic printing, and if the transparency T is ≧58% for full black printing, then excellent design can be obtained, with the back side being visible from the light-receiving surface side in at least a portion of the specified area where the printing layer 3 is formed.

[0072] In this way, by setting a predetermined transparency T so that the above condition B is satisfied and forming the printing layer 3 (i.e., by having the steps of printing the entire surface at a certain transparency T, measuring the spectral sensitivity integral ratio, and determining whether condition B is satisfied, setting the transparency T when condition B is satisfied to a predetermined transparency T, and forming the printing layer 3 at the set transparency T), it is possible to manufacture a solar cell module 1 of this embodiment that has excellent design and power generation performance.

[0073] Furthermore, by forming the printed layer 3 by setting a predetermined transparency T so that the above condition C is satisfied (i.e., by performing full-surface printing at a certain transparency T, measuring the specific spectral sensitivity integral ratio, the non-specific spectral sensitivity integral ratio, and the spectral sensitivity peak ratio, and determining whether or not condition C is satisfied, setting the transparency T when condition C is satisfied to a predetermined transparency T, and forming the printed layer 3 at the set transparency T), it is possible to manufacture the solar cell module 1 of this embodiment, which has excellent design and power generation performance.

[0074] Furthermore, by forming the printed layer 3 by setting a predetermined transparency T so that the above condition A is satisfied (i.e., by having the steps of determining a predetermined value A*, which is the spectral sensitivity integral ratio A when printed at a transparency T that results in a short-circuit current ratio of 0.6, printing the entire surface at a certain transparency T, measuring the spectral sensitivity integral ratio A, and determining whether or not condition A is satisfied, setting the transparency T when condition A is satisfied to the predetermined transparency T, and forming the printed layer 3 at the set transparency T), it is possible to manufacture the solar cell module 1 of this embodiment, which has excellent design and power generation performance.

[0075] Here, the relationship between the transparency and the specific wavelength spectral sensitivity integral ratio and the non-specific wavelength spectral sensitivity integral ratio of each of the RGB colors will be described. R and red non-specific wavelength spectral sensitivity integral ratio C R The relationship between the transmittance and the green specific wavelength spectral sensitivity integral ratio B is shown in Figure 10. G and green non-specific wavelength spectral sensitivity integral ratio C GThe relationship between the transmittance and the blue specific wavelength spectral sensitivity integral ratio B is shown in Figure 11. B and blue non-specific wavelength spectral sensitivity integral ratio C B The relationship between these is shown in Figure 12.

[0076] 10 to 12, in the region where the transmittance T is around 50% for each of the RGB colors, the non-specific wavelength spectral sensitivity integral ratio has a greater effect on changes in the transmittance T than the specific wavelength spectral sensitivity integral ratio (i.e., the slope of the curve is greater). Therefore, by forming the printed layer 3 by setting a predetermined transmittance T so that the following condition D is satisfied (i.e., the method includes the steps of performing full-surface printing at a certain transmittance T, measuring the non-specific spectral sensitivity integral ratio, and determining whether condition D is satisfied; setting the transmittance T when condition D is satisfied to the predetermined transmittance T; and forming the printed layer 3 at the set transmittance T), the solar cell module 1 according to this embodiment, which has excellent design and power generation performance, can be more easily manufactured. [Condition D] When the printed layer is a single red color, the red non-specific wavelength spectral sensitivity integrated ratio C specified by the above formula (7) R is 0.29 or more. When the printed layer is green only, the green non-specific wavelength spectral sensitivity integral ratio C specified by the above formula (10) G is 0.23 or more. When the printed layer is a single blue color, the blue non-specific wavelength spectral sensitivity integrated ratio C specified by the above formula (13) B is 0.25 or more.

[0077] When manufacturing the solar cell module 1 according to this embodiment, using condition B rather than condition A, condition C rather than condition B, and condition D rather than condition C can make manufacturing easier.

[0078] As shown in FIG. 17 , the predetermined area where the printing layer 3 is formed may be a partial area of ​​the film 4, and a specific area R, which is different from the predetermined area, may be printed with a transparency T and / or color different from that of the printing layer 3. Such composite printing may be performed, for example, as follows: First, the film 4 is masked to exclude the specific area R from the printing target. This masking may be performed using a first masking material 6 that is temporarily attached to the specific area R. With this masking in place, a first printing is performed on the entire film 4, and then the first masking material 6 is removed, thereby forming the printing layer 3 only in the predetermined area excluding the specific area R. Then, the film 4 is masked a second time to exclude the predetermined area from the printing target. This second masking may be performed using a second masking material 7 that is temporarily attached to the predetermined area. With this second masking applied, a second printing is applied to the entire area of ​​the film 4, and then the second masking material 7 is removed, thereby forming a print having a transparency T and / or color different from that of the printing layer 3 only in the specific area R excluding the specified area.

[0079] The above-mentioned investigation results regarding power generation performance and design (see-through ability) are for the case where printed layer 3 is formed on film 4 attached to substrate 2b on the light-receiving surface side, but because the impact of film 4 and adhesive layer 5 for attaching it on power generation performance and design is negligible, the results can also be applied to the case where printed layer 3 is formed on substrate 2b on the light-receiving surface side without film 4. In other words, solar cell module 1 according to this embodiment can also be modified to a configuration in which printed layer 3 is formed on substrate 2b on the light-receiving surface side.

[0080] Next, a solar cell module 1 according to a second embodiment of the present invention will be described. As shown in FIG. 18, the solar cell module 1 according to this embodiment includes a solar cell module main body 2 and a printed layer 3 formed in a predetermined region by printing with a predetermined transparency T on the back side, which is the opposite side of the solar cell module main body 2 from the light-receiving side. At least a portion of the predetermined region is configured to allow the light-receiving side to be seen through from the back side. When the printed layer 3 is provided on the light-receiving side instead of the back side, the predetermined transparency T is set so as to satisfy at least one of the above-mentioned conditions A, B, C, and D. In FIG. 18, elements corresponding to those shown in the first embodiment are designated by the same reference numerals.

[0081] According to this configuration, printing with the same transparency T as that of the solar cell module 1 according to the first embodiment is applied to the back side, and the light-receiving surface side can also be seen through, thereby achieving an excellent design suitable for use in combination with the solar cell module 1 according to the first embodiment. In other words, the solar cell module 1 according to the second embodiment has a design that harmonizes with the solar cell module 1 according to the first embodiment.

[0082] In this way, when the printing layer 3 is provided on the light-receiving surface side instead of the back surface side, it is possible to manufacture the solar cell module 1 according to the second embodiment, which has excellent design properties suitable for use in combination with the solar cell module 1 according to the first embodiment, by setting the predetermined transparency T so as to satisfy at least one of the above conditions A, B, C, and D. Furthermore, when manufacturing the solar cell module 1 according to the second embodiment, manufacturing can be made easier by using condition B rather than condition A, condition C rather than condition B, or condition D rather than condition C.

[0083] In this embodiment, the printed layer 3 is formed on a film 4 attached to the rear substrate 2b, but as in the first embodiment, the printed layer 3 may also be formed on the rear substrate 2b.

[0084] Next, with reference to FIG. 19, a panel 8 according to one embodiment of the present invention will be described.

[0085] As shown in Fig. 19, a panel 8 according to this embodiment includes a plurality of solar cell modules 1 and a sheet 9 to which the plurality of solar cell modules 1 are attached in a partial area (attachment area S). The sheet 9 is formed in an area different from the attachment area S and includes a sheet printing layer 10, which is a printing layer on which a predetermined image P is printed across the printing layers 3 of the plurality of solar cell modules 1. The sheet 9 is formed, for example, from a transparent flexible sheet. When the sheet 9 is formed from such a flexible sheet, the flexible sheet may include wiring for the solar cell modules 1.

[0086] In this embodiment, the number of solar cell modules 1 is six, but the number of solar cell modules 1 may be one or more. The multiple solar cell modules 1 may be configured by any combination of the solar cell module 1 according to the first embodiment (or the various modified examples thereof described above) and the solar cell module 1 according to the second embodiment (or the various modified examples thereof described above).

[0087] According to the panel 8 of this embodiment, it is possible to apply large-area printing that combines the printing layers 3 of multiple solar cell modules 1 and the sheet printing layer 10 of the sheet 9, thereby achieving excellent design.

[0088] Next, a print data generation device 11 according to one embodiment of the present invention will be described with reference to Fig. 20. The print data generation device 11 according to this embodiment generates print data for printing a predetermined image P on the panel 8 described above. The print data generation device 11 can be configured, for example, by a computer equipped with a processor and memory. As shown in Fig. 20, the print data generation device 11 according to this embodiment has a data input unit 12, a data processing unit 13, and a data output unit 14.

[0089] The data input unit 12 is configured to be able to input data corresponding to a predetermined image P to be printed on the panel 8, information about the sheet 9 from which the panel 8 is formed (such as the shape and size of the sheet 9), and information about the solar cell modules 1 from which the panel 8 is formed (such as the number, shape, size, and arrangement of the solar cell modules 1). Note that input to the data input unit 12 may be performed by a human via an interface such as a keyboard, or may be performed automatically by AI or the like.

[0090] The data processing unit 13 is configured to obtain printing data corresponding to a portion of a predetermined image P from data corresponding to the predetermined image P in order to form a printing layer 3 of each solar cell module 1 that displays only a portion of the predetermined image P, and to obtain printing data corresponding to the other portion of the predetermined image P from data corresponding to the predetermined image P in order to form a sheet printing layer 10 of the sheet 9 that displays only another portion of the predetermined image P.

[0091] The data output unit 14 is configured to be able to output the print data obtained by the data processing unit 13 to a printing machine.

[0092] Therefore, according to the printing data generation device 11 of this embodiment, printing data corresponding to each of multiple solar cell modules 1 and sheets 9 can be easily obtained, and therefore printing data for printing a specified image P on a panel 8 can be easily generated.

[0093] The above-described embodiment is merely an example of an embodiment of the present invention, and various modifications are possible without departing from the gist of the invention.

[0094] Therefore, the solar cell module 1, panel 8, and print data generating device 11 of the above embodiment can be modified in various ways, for example as described below.

[0095] The solar cell module 1 according to the first aspect of the first embodiment has a solar cell module main body 2 and a printing layer 3 formed in a predetermined area by printing with a predetermined transparency T on the light-receiving surface side of the solar cell module main body 2, and is a solar cell module 1 that allows the back side to be seen through from the light-receiving surface side in at least a part of the predetermined area, and can be modified in various ways as long as the predetermined transparency T is set so that condition A is satisfied.

[0096] The solar cell module 1 according to the second aspect of the first embodiment has a solar cell module main body 2 and a printing layer 3 formed in a predetermined area on the light-receiving surface side of the solar cell module main body 2 by printing in full color, red monochromatic, green monochromatic or blue monochromatic with a predetermined transparency T, and is a solar cell module 1 that allows the back side to be seen through from the light-receiving surface side in at least a part of the predetermined area, and can be modified in various ways as long as the predetermined transparency T is set so that condition B is satisfied.

[0097] The solar cell module 1 according to the third aspect of the first embodiment has a solar cell module main body 2 and a printing layer 3 formed in a predetermined area on the light-receiving surface side of the solar cell module main body 2 by printing in a single color of red, green, or blue with a predetermined transparency T, and can be modified in various ways as long as the solar cell module 1 is such that the back side can be seen through from the light-receiving surface side in at least a part of the predetermined area, and the predetermined transparency T is set so that condition C is satisfied.

[0098] The solar cell module 1 according to the fourth aspect of the first embodiment has a solar cell module main body 2 and a printing layer 3 formed in a predetermined area on the light-receiving surface side of the solar cell module main body 2 by printing in a single color of red, green, or blue with a predetermined transparency T, and can be modified in various ways as long as the solar cell module 1 is such that the back side can be seen through from the light-receiving surface side in at least a part of the predetermined area, and the predetermined transparency T is set so that condition D is satisfied.

[0099] However, in the solar cell module 1 according to the first embodiment, the solar cell module body 2 preferably has a pair of substrates 2b sandwiching at least one power generating cell 2a therebetween, and the printed layer 3 is preferably formed on the substrate 2b on the light receiving surface side.

[0100] Furthermore, in the solar cell module 1 of the first embodiment, the solar cell module body 2 preferably has a pair of substrates 2b sandwiching at least one power generating cell 2a therebetween, and the printed layer 3 is preferably formed on a film 4 adhered to the substrate 2b on the light receiving surface side.

[0101] The solar cell module 1 of the first embodiment has an adhesive layer 5 that adheres the film 4 to the substrate 2b on the light-receiving surface side, and it is preferable that the adhesive layer 5 is a film-like adhesive sheet that has an ultraviolet filter function that blocks ultraviolet rays with wavelengths shorter than 400 nm.

[0102] In the solar cell module 1 according to the first embodiment, it is preferable that a print having a transparency T and / or color different from that of the printed layer 3 is applied to an area (specific area R) different from the predetermined area on the surface on which the printed layer 3 is formed.

[0103] In the solar cell module 1 according to the first embodiment, the solar cell module body 2 is preferably configured as a dye-sensitized solar cell.

[0104] Furthermore, the solar cell module 1 according to the second embodiment has a solar cell module main body 2 and a printed layer 3 formed in a predetermined area by printing with a predetermined transparency T on the back side, which is the opposite side of the solar cell module main body 2 from the light-receiving side, and is a solar cell module 1 that allows the light-receiving side to be seen from the back side in at least a part of the predetermined area, and can be modified in various ways as long as the predetermined transparency T is set so as to satisfy at least one of conditions A, B, C, and D when the printed layer 3 is provided on the light-receiving side instead of the back side.

[0105] Furthermore, the panel 8 according to the embodiment has a solar cell module 1 and a sheet 9 to which the solar cell module 1 is attached in a partial area (attachment area S), and can be modified in various ways as long as the sheet 9 has a printing layer (sheet printing layer 10) formed in an area different from the partial area and on which printing spanning the printing layer 3 of the solar cell module 1 is formed.

[0106] Furthermore, the printing data generating device 11 according to the embodiment is a printing data generating device 11 that generates printing data for printing only a portion of a predetermined image P on a solar cell module 1, and can be modified in various ways as long as it has a data processing unit 13 that obtains printing data corresponding to the portion of the predetermined image P from data corresponding to the predetermined image P in order to form a printing layer 3.

[0107] However, it is preferable that the print data generating device 11 is a print data generating device 11 that generates print data for printing a predetermined image P on the panel 8, and that it has a data processing unit 13 that obtains print data corresponding to a portion of the predetermined image P from data corresponding to the predetermined image P in order to form a printing layer 3 of the solar cell module 1 that displays only a portion of the predetermined image P, and that obtains print data corresponding to the other portion of the predetermined image P from data corresponding to the predetermined image P in order to form a printing layer of the sheet 9 (sheet printing layer 10) that displays only another portion of the predetermined image P. [Industrial Applicability]

[0108] According to the present invention, it is possible to provide a solar cell module that satisfies the first object.

[0109] According to the present invention, it is possible to provide a solar cell module that satisfies the second object.

[0110] According to the present invention, a panel that satisfies the third object can be provided.

[0111] According to the present invention, it is possible to provide a print data generating device that satisfies the fourth object above. [Explanation of symbols]

[0112] 1. Solar cell module 2. Solar cell module body 2a Power generation cell 2b board 2c Conductive film 2d porous semiconductor layer 2e Catalyst layer 2f charge transport layer 2g adhesive layer 2h wiring structure 2i collector electrode 2j terminal 3 printing layer 4 Film 5 Adhesive layer 6. First masking material 7 Second masking material 8 Panels 9 sheets 10 sheet printing layers 11 Print data generating device 12 Data entry section 13 Data Processing Unit 14 Data output section P Predefined image R Specific area S Adhesion area T Transparency

Claims

1. A solar cell module having a solar cell module body and a print layer formed in a predetermined region by printing in full color, red monochromatic color, green monochromatic color, or blue monochromatic color with a predetermined transparency on the light-receiving surface side of the solar cell module body, wherein the back side can be seen through from the light-receiving surface side in at least a part of the predetermined region, The solar cell module, wherein the predetermined transparency is set so as to satisfy the following condition B: [Condition B] When the printing layer is full color, the spectral sensitivity integral ratio A is determined by the following formula (2): K is 0.50 or more. When the printing layer is a single red color, the spectral sensitivity integrated ratio A is determined by the following formula (3): R is 0.47 or more. When the printed layer is a single green color, the spectral sensitivity integrated ratio A is determined by the following formula (4): G is 0.60 or more. When the printing layer is a single blue color, the spectral sensitivity integrated ratio A is determined by the following formula (5): B is 0.63 or more. [Equation 1] [Equation 2] [Equation 3] [Equation 4] f K (λ): Quantum efficiency IPCE (%) when a black print layer is formed on the entire surface f R (λ): Quantum efficiency IPCE (%) when a red monochromatic print layer is formed on the entire surface f G (λ): Quantum efficiency IPCE (%) when a green monochromatic full-surface printed layer is formed f B (λ): Quantum efficiency IPCE (%) when a blue monochromatic full-surface printed layer is formed

2. A solar cell module having a solar cell module body and a print layer formed in a predetermined region by printing in a single color of red, green, or blue with a predetermined transparency on the light-receiving surface side of the solar cell module body, wherein the back side can be seen through from the light-receiving surface side in at least a part of the predetermined region, The solar cell module, wherein the predetermined transparency is set so as to satisfy the following condition C: [Condition C] When the printed layer is a single red color, the red specific wavelength spectral sensitivity integrated ratio B is determined by the following formula (6): R is 0.18 or more, and the red non-specific wavelength spectral sensitivity integrated ratio C R is 0.29 or more, and the red spectral sensitivity peak ratio P R is 0.70 or more. When the printed layer is a single green color, the green specific wavelength spectral sensitivity integrated ratio B is determined by the following formula (9): G is 0.37 or more, and the green non-specific wavelength spectral sensitivity integrated ratio C specified by the following formula (10) G is 0.23 or more, and the green spectral sensitivity peak ratio P G is 0.78 or more. When the printed layer is a single blue color, the blue specific wavelength spectral sensitivity integrated ratio B is determined by the following formula (12): B is 0.38 or more, and the blue non-specific wavelength spectral sensitivity integrated ratio C B is 0.25 or more, and the blue spectral sensitivity peak ratio P B is 0.77 or more. [Equation 5] [Equation 6] [Equation 7] [Equation 8] [Equation 9] [Equation 10] [0011] [0012] [0013] λ RP : f in the red specific wavelength range of 560 nm ≦ λ ≦ 660 nm R λ when (λ) reaches its peak λ GP : f in the red specific wavelength range of 480 nm ≦ λ ≦ 580 nm G λ when (λ) reaches its peak λ BP : 430nm≦λ≦530nm blue specific wavelength range f B λ when (λ) reaches its peak

3. the solar cell module body has a pair of substrates sandwiching at least one power generating cell, The solar cell module according to claim 1 , wherein the printed layer is formed on the substrate on the light-receiving surface side.

4. the solar cell module body has a pair of substrates sandwiching at least one power generating cell, The solar cell module according to claim 1 , wherein the printed layer is formed on a film attached to the substrate on the light-receiving surface side.

5. an adhesive layer that adheres the film to the substrate on the light-receiving surface side; The solar cell module according to claim 4 , wherein the adhesive layer is a film-like pressure-sensitive adhesive sheet having an ultraviolet filter function that blocks ultraviolet rays having wavelengths shorter than 400 nm.

6. The solar cell module according to any one of claims 1 to 5, wherein a print having a transparency and / or color different from that of the print layer is applied to an area different from the predetermined area on the surface on which the print layer is formed.

7. 7. The solar cell module according to claim 1, wherein the solar cell module body is formed of a dye-sensitized solar cell.

8. A solar cell module having a solar cell module body and a printed layer formed in a predetermined area by printing with a predetermined transparency on a back side that is opposite to the light-receiving surface side of the solar cell module body, wherein the light-receiving surface side can be seen through from the back side in at least a part of the predetermined area, A solar cell module in which, when the printing layer is provided on the light-receiving surface side instead of the back surface side, the specified transparency is set so as to satisfy at least one of condition B described in claim 1 and condition C described in claim 2.

9. The solar cell module according to any one of claims 1 to 8, a sheet to which the solar cell module is attached in a partial area, The sheet has a printing layer formed in an area different from the partial area and having printing formed across the printing layer of the solar cell module.

10. A print data generation device that generates print data for printing only a part of a predetermined image on the solar cell module according to any one of claims 1 to 8, a print data generating device having a data processing unit for obtaining print data corresponding to the portion of the predetermined image from data corresponding to the predetermined image to form the print layer;

11. 10. A print data generating device for generating print data for printing a predetermined image on a panel according to claim 9, comprising: A print data generation device having a data processing unit that obtains print data corresponding to a portion of a specified image from data corresponding to the specified image in order to form the printing layer of the solar cell module that displays only a portion of the specified image, and that obtains print data corresponding to the other portion of the specified image from data corresponding to the specified image in order to form the printing layer of the sheet that displays only another portion of the specified image.

Images