Organic photovoltaic device and device based on organic photovoltaic

Abstract

The utility model belongs to the field of organic photovoltaic technology, and specifically relates to an organic photovoltaic device. The organic photovoltaic device comprises a lower substrate, an organic photovoltaic module, a sealant layer, an upper cover plate and an electrode taking-out part, the electrode taking-out part and an upper electrode layer are of an integrally-formed structure, and the electrode taking-out part is located on the upper surface of the lower substrate and comprises a connecting part and an end part. The organic photovoltaic device further includes an end conductive layer laminated on the upper surface of the end of the electrode extraction or on the upper surface of the end of the electrode extraction and the upper surface of the lower substrate. According to the invention, the end part conductive layer is laminated on the end part of the electrode extraction part, so that the power supply stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the organic photovoltaic technical field, concretely relates to an organic photovoltaic device. BACKGROUND

[0002] Organic photovoltaic is a solar cell technology based on organic semiconductor. Organic photovoltaic materials have the characteristics of high absorbance, adjustable absorption band, and low leakage current under low light intensity in the visible light range. They have unique industrialization advantages in wearable electronic devices, Internet of Things, electronic price tags, building photovoltaic integration, new energy vehicles, and other scenarios. They are considered to be a new generation of solar cell technology that is both economical and has development potential.

[0003] The structure of an organic photovoltaic device usually includes an anode, an anode buffer layer, a photoactive layer, a cathode buffer layer, and a cathode layer stacked in order from the bottom right to the top. The working principle is as follows: After the donor material and the acceptor material in the photoactive layer absorb photons, they form an electron-hole pair with a certain binding energy, i.e., a photogenerated exciton. Then, under the driving of the exciton concentration gradient, the photogenerated exciton diffuses to the interface between the donor and the acceptor and is converted into a CT-state exciton with weaker binding energy. Under the driving of the energy level difference, the CT-state exciton overcomes the binding energy and dissociates into a carrier. The separated electron and hole become free-moving carriers, where the electron moves to the cathode in the acceptor material, and the hole moves to the anode in the donor material. The cathode and the anode capture the electrons and holes that move to the vicinity of the electrodes and output electric charges externally, thereby realizing power supply.

[0004] Patent CN219917183U discloses a packaging structure of an organic solar cell, which includes two layers of glass and an organic polymer device between the two layers of glass. The organic polymer device is connected with a conductive metal tape that extends out of the glass and is electrically connected with an external device through the conductive metal tape.

[0005] Patent CN116528603A discloses an organic solar cell structure, wherein the electrode lead-out part and the upper electrode are integrally formed, thereby effectively avoiding damage to the element caused by the contact between water vapor, oxygen in the external environment and the organic functional layer of the organic solar cell during cell packaging.

[0006] Then, if the conductive metal band is used to lead out the process in the prior art, there will be gaps and bubbles near the conductive metal band during packaging, so that air and / or oxygen and / or water directly enter the layer system of the organic solar cell, thereby affecting the packaging effect and the service life of the photovoltaic cell. If the electrode lead-out part and the upper electrode are integrally formed, the current upper electrode generally uses a thin metal layer (such as Ag electrode), when the organic solar cell is connected with the external device (such as through the spring), the connection part will rub with the electrode lead-out part, and frequent rubbing can easily cause the metal thin film layer at the contact position to wear or even fall off, thereby unable to provide continuous and stable power supply for the integrated product. Practical new type content

[0007] In order to solve the problems in the prior art, the utility model provides an organic photovoltaic device, by adding a layer of end conductive layer on the upper end of the electrode lead-out part, the external device contacts with the end conductive layer to enhance the power supply stability of the integrated product when the organic photovoltaic device is integrated with the external device.

[0008] The specific scheme is as follows:

[0009] An organic photovoltaic device, comprising a lower substrate, an organic photovoltaic module, a sealing adhesive layer, an upper cover plate and an electrode lead-out part, the organic photovoltaic module is packaged in the space surrounded by the lower substrate, the upper cover plate and the sealing adhesive layer, the organic photovoltaic module comprises a lower electrode layer, an upper electrode layer and a functional layer between the lower electrode layer and the upper electrode layer, the lower electrode layer is located on the upper surface of the lower substrate, the electrode lead-out part and the upper electrode layer are integrally formed and the electrode lead-out part is located on the upper surface of the lower substrate, wherein the electrode lead-out part comprises a connecting part and an end part, the connecting part is located inside the upper cover plate, and the end part is located outside the upper cover plate to expose it, the organic photovoltaic device further comprises an end conductive layer, the end conductive layer is stacked on the upper surface of the end part of the electrode lead-out part or the end conductive layer is stacked on the upper surface of the end part of the electrode lead-out part and the upper surface of the lower substrate.

[0010] In one embodiment, the end conductive layer is a single metal layer or a metal alloy layer.

[0011] Further, the end conductive layer is a metal alloy layer, and the metal alloy layer is selected from low-temperature alloy materials, and the melting point of the low-temperature alloy material is selected from 40-180 DEG C.

[0012] Optionally, the low-temperature alloy material is selected from, but not limited to, one of bismuth indium tin alloy, tin lead bismuth alloy, bismuth indium tin cadmium alloy, Newton alloy, hastelloy.

[0013] In one embodiment, the end conductive layer is a single metal material, and the single metal material is selected from conductive copper foil tape or aluminum foil tape.

[0014] In one embodiment, the organic photovoltaic module comprises n organic photovoltaic cells, the organic photovoltaic cells comprising a lower electrode layer, an upper electrode layer and a functional layer between the lower electrode layer and the upper electrode layer, wherein n is an integer greater than or equal to 2.

[0015] In one embodiment, the organic photovoltaic device has two or more electrode extraction portions which are integrally formed with the upper electrode of the organic photovoltaic cells.

[0016] In one embodiment, the organic photovoltaic module comprises n organic photovoltaic cells electrically connected in series, and the organic photovoltaic device has two electrode extraction portions which are integrally formed with the upper electrode of the outermost organic photovoltaic cells on the opposite sides of the organic photovoltaic module along the series direction.

[0017] In one embodiment, the sealing adhesive layer is only located at the four peripheral edges of the upper cover plate, and forms an edge package for the organic photovoltaic module in combination with the lower substrate.

[0018] or the sealing adhesive layer covers the upper cover plate, and forms a full-surface package for the organic photovoltaic module in combination with the lower substrate.

[0019] In one embodiment, the lower substrate is selected from glass, and the upper cover plate is selected from glass.

[0020] An organic photovoltaic-based device comprises the organic photovoltaic device as described above and an integrated device connected to the organic photovoltaic device.

[0021] In one embodiment, according to the organic photovoltaic-based device as described above, the organic photovoltaic device is connected to the integrated device through a conductive spring.

[0022] Advantages:

[0023] The present application provides an organic photovoltaic device, the electrode extraction portion of which is integrally formed with the upper electrode of the organic photovoltaic module, the electrode extraction portion comprising a connecting portion and an end portion, the end portion being located outside the upper cover plate and exposed, and the present application creatively adds an end portion conductive layer at the end portion of the electrode extraction portion, the "end portion conductive layer" having the following functions:

[0024] First, it has conductive properties and can achieve good electrical contact and conduction with the end portion of the electrode extraction portion.

[0025] Second, with the protective properties, according to the organic photovoltaic device described in the application, on the one hand, because the electrode extraction part is integrally formed with the upper electrode, the thickness is very thin, usually less than 300nm, so it is easy to be damaged and cannot supply energy when connected with external devices; the application can effectively enhance the anti-abrasion performance of the end of the electrode extraction part by preparing an end conductive layer at the end of the electrode extraction part, thereby improving the power supply stability of the integrated product when the organic photovoltaic device is integrated with external devices. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 A structural schematic diagram of an organic photovoltaic device provided by an embodiment of the application.

[0028] Figure 2 For Figure 1 A cross-sectional view of the structural schematic diagram of the organic photovoltaic device provided by the corresponding embodiment along the A-A direction.

[0029] Figure 3 For Figure 1 A cross-sectional view of the structural schematic diagram of the organic photovoltaic device provided by the corresponding embodiment along the B-B direction.

[0030] Figure 4 A structural schematic diagram of an organic photovoltaic device provided by another embodiment of the application.

[0031] Figure 5 For Figure 4 A cross-sectional view of the structural schematic diagram of the organic photovoltaic device provided by the corresponding embodiment along the C-C direction.

[0032] Figure 6 For Figure 4 A cross-sectional view of the structural schematic diagram of the organic photovoltaic device provided by the corresponding embodiment along the D-D direction.

[0033] Figure 7 A structural schematic diagram of an organic photovoltaic device provided by another embodiment of the application.

[0034] Figure 8 A structural schematic diagram of an organic photovoltaic device provided by another embodiment of the application.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1-organic photovoltaic device; 2-organic photovoltaic cell; 10-lower substrate; 11-lower electrode layer; 12-functional layer; 121-first charge transport layer; 122-photoactive layer; 123-second charge transport layer; 13-upper electrode layer; 14-sealing glue layer; 15-upper cover plate; 16-end conductive layer; 17-electrode extraction part; 171-electrode extraction part connecting part; 172-electrode extraction part end; P1-insulating channel; P2-connecting channel; P3-separating channel DETAILED DESCRIPTION

[0037] For the purpose of promoting the understanding and facilitating appreciation of the present application, the present application will be described in conjunction with the related drawings. The embodiments of the present application are illustrated in the drawings. However, the present application can be realized in many different forms and should not be limited to the embodiments described herein. On the contrary, the embodiments are provided to make the disclosure of the present application more comprehensive and complete. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0039] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. For example, when the specific posture changes, the directional indication also changes accordingly

[0040] In the present application, unless otherwise specified and limited, if there is a description of the first feature "on" or "under" the second feature, etc., it means that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature. However, it should be noted that when the first feature is "on the surface of the second feature", it means that the first feature is in direct contact with the second feature, and the first feature is directly above or obliquely above the second feature.

[0041] "integrally formed" as used herein means that the same material and process are used to simultaneously manufacture the structure, and the resulting structure is one piece.

[0042] The descriptions such as "first", "second", etc. in the present application are merely intended for descriptive purposes and do not particularly indicate the order or sequence, nor limit the present application, and are merely used to distinguish components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features.

[0043] The advantages of the present application are further illustrated in conjunction with the accompanying drawings and specific embodiments.

[0044] The embodiment of the present application provides an organic photovoltaic device 1, comprising a lower substrate 10, an organic photovoltaic module, a sealing adhesive layer 14, an upper cover plate 15 and an electrode extraction part 17, the organic photovoltaic module is encapsulated in a space surrounded by the lower substrate 10, the upper cover plate 15 and the sealing adhesive layer 14, the organic photovoltaic module comprises a lower electrode layer 11, an upper electrode layer 13 and a functional layer 12 between the lower electrode layer 11 and the upper electrode layer 13, the lower electrode layer 11 is located on the upper surface of the lower substrate 10, the electrode extraction part 17 and the upper electrode layer 13 are integrally formed and the electrode extraction part 17 is located on the upper surface of the lower substrate 10, wherein the electrode extraction part 17 comprises a connecting part 171 and an end part 172, the connecting part 171 is located inside the upper cover plate 15, the end part 172 is located outside the upper cover plate 15 so as to be exposed, and the organic photovoltaic device 1 further comprises an end conductive layer 16, the end conductive layer 16 is laminated on the upper surface of the electrode extraction part end part 172 or the end conductive layer 16 is laminated on the upper surface of the electrode extraction part end part 172 and the upper surface of the lower substrate 10.

[0045] The "inside the upper cover plate" refers to the area containing the upper cover plate in the orthographic projection direction; the "outside the upper cover plate" refers to the area not containing the upper cover plate in the orthographic projection direction. The "orthographic projection direction" refers to the lamination direction of each functional layer of the device.

[0046] As shown in Figure 1 , Figure 2 , Figure 3 In one embodiment, the end conductive layer 16 is laminated on the upper surface of the electrode extraction part end part 172.

[0047] As shown in Figure 4 , Figure 5 , Figure 6 In another embodiment, the end conductive layer 16 is laminated on the upper surface of the electrode extraction part end part 172 and the upper surface of the lower substrate 10.

[0048] Further, the end conductive layer 16 is a single metal layer or a metal alloy layer.

[0049] In one embodiment, the end conductive layer 16 is a metal alloy layer; the metal alloy layer is selected from low-temperature alloy materials, and the low-temperature alloy material has a melting point selected from 40-180℃.

[0050] Further, the low-temperature alloy material has a melting point selected from 40-100℃.

[0051] Optionally, the low-temperature alloy material is selected from, but not limited to, one of bismuth-indium-tin alloy, tin-lead-bismuth alloy, bismuth-indium-tin-cadmium alloy, Newton's alloy, Harper's alloy.

[0052] In a specific embodiment, the bismuth-indium-tin alloy is selected from Field's alloy.

[0053] In a specific embodiment, the tin-lead-bismuth alloy is selected from Rose's alloy or Lichtenberg's alloy.

[0054] In a specific embodiment, the bismuth-indium-tin-cadmium alloy is selected from Wood's alloy or Lipowitz's alloy or Cerrobend alloy.

[0055] Specifically, Field's alloy has a melting point of 62℃; Wood's alloy has a melting point of 71℃; Rose's alloy has a melting point of 98℃; Newton's alloy has a melting point of 96℃; Lipowitz's alloy has a melting point of 80℃; Lichtenberg's alloy has a melting point of 92; Harper's alloy has a melting point of 75℃; and Cerrobend alloy has a melting point of 70℃, which are low-melting-point alloys in solid state at room temperature.

[0056] The low-temperature alloy layer described above can be prepared on the electrode extraction portion end by printing. Specifically, the low-melting-point alloy can be melted first, and then prepared by dispensing or printing, but is not limited thereto.

[0057] When the end conductive layer 16 material is selected from low-temperature alloy materials, it can be prepared on the electrode extraction portion end by printing, which has the advantages of simple operation, controllable process and high repeatability on the one hand, and can form a good electrode contact topography with the electrode extraction portion end on the other hand. At the same time, compared with traditional tin paste welding materials, the low-temperature alloy has a low operating temperature and does not damage the device performance.

[0058] In one embodiment, the end conductive layer 16 is a single metal material. Optionally, the single metal material is selected from copper or aluminum. Further, the single metal material is selected from a conductive copper foil tape or an aluminum foil tape. The copper foil or aluminum foil can be prepared on the electrode extraction portion end by means of pasting;

[0059] In the present application, the thickness of the end conductive layer is not limited and can be adjusted according to actual needs.

[0060] As shown in Figure 1 , Figure 3 , Figure 4 , Figure 6 In one embodiment, the organic photovoltaic module includes n organic photovoltaic cell units 2, which include a lower electrode layer 11, an upper electrode layer 13, and a functional layer 12 between the lower electrode layer 11 and the upper electrode layer 13, wherein n is an integer greater than or equal to 2.

[0061] Further, the n organic photovoltaic cell units 2 are electrically connected in series or in parallel.

[0062] As shown in Figure 3 , Figure 6 In one embodiment, the organic photovoltaic device 1 has two or more electrode extraction portions 17, which are integrally formed with the upper electrode of the organic photovoltaic cell unit 2.

[0063] According to the organic photovoltaic device 1 of the present application, there are two or more electrode extraction portions 17, and the end conductive layer 16 is laminated on the upper surface of the end 172 of each electrode extraction portion or on the upper surface of the end 172 of each electrode extraction portion and the upper surface of the lower substrate 10.

[0064] As shown in Figure 3 , Figure 6 In one embodiment, the organic photovoltaic module includes n organic photovoltaic cell units 2 electrically connected in series, and the organic photovoltaic device 1 has two electrode extraction portions 16, which are integrally formed with the upper electrode of the organic photovoltaic cell unit 2 located at the opposite sides of the organic photovoltaic module along the series direction.

[0065] It should be noted that the n organic photovoltaic cell units 2 are electrically connected in series, preferably by a channel assembly, which is composed of an insulating channel P1, a connecting channel P2 and a partition channel P3. The insulating channel P1 is located between the functional layer and the lower substrate and penetrates the lower electrode layer, the connecting channel P2 is located between the upper electrode layer and the lower electrode layer and penetrates the functional layer, and the partition channel P3 penetrates the upper electrode layer or penetrates the upper electrode layer and part or all of the functional layer.

[0066] In the present application, the organic photovoltaic module comprises n organic photovoltaic cell units, in an embodiment, n is selected from an integer greater than or equal to 3; in another embodiment, n is selected from an integer greater than or equal to 4; in another embodiment, n is selected from an integer greater than or equal to 5; in another embodiment, n is selected from an integer greater than or equal to 6; in another embodiment, n is selected from an integer greater than or equal to 9; in another embodiment, n is selected from an integer greater than or equal to 15; in another embodiment, n is selected from an integer greater than or equal to 20. The number of organic photovoltaic cell units can be selected according to the performance requirements of the product application end.

[0067] As shown in the drawings, Figure 7 In an embodiment, the functional layer 12 comprises a first charge transport layer 121, a photoactive layer 122 and a second charge transport layer 123, the first charge transport layer 121 is located between the lower electrode layer 11 and the photoactive layer 122, and the second charge transport layer 123 is located between the upper electrode layer 13 and the photoactive layer 122.

[0068] In one of the embodiments, the lower electrode layer 11 is an anode, the upper electrode layer 13 is a cathode, and the organic photovoltaic cell unit 2 comprises an anode layer, an anode buffer layer, a photoactive layer, a cathode buffer layer and a cathode layer stacked in order from bottom to top.

[0069] In another embodiment, the lower electrode layer 11 is a cathode, the upper electrode layer 13 is an anode, and the organic photovoltaic cell unit comprises a cathode layer, a cathode buffer layer, a photoactive layer, an anode buffer layer and an anode layer stacked in order from bottom to top.

[0070] As shown in the drawings, Figure 5 , Figure 6 In an embodiment, the sealant layer 14 is only located at the four peripheral edges of the upper cover plate 15, which forms an edge package with the lower package 10 layer to the organic photovoltaic module.

[0071] As shown in the drawings, Figure 2 , Figure 3 In another embodiment, the sealant layer 14 covers the upper cover plate 15, which forms a full-area package with the lower substrate 10 to the organic photovoltaic cell module.

[0072] The materials that can be used in the organic photovoltaic device are as follows:

[0073] The lower substrate can be selected from glass.

[0074] The lower electrode 11 can be made of a transparent or semi-transparent conductive material, but is not limited thereto. The conductive material can be a conductive metal oxide, such as indium oxide, zinc oxide, tin oxide, indium tin oxide (ITO), fluorine-doped tin oxide (FTO), gallium-doped zinc oxide (GZO), aluminum-doped zinc oxide (AZO), indium zinc oxide (IZO), and indium gallium zinc oxide (IGZO); a conductive polymer, such as poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polypyrrole, and polyaniline, etc.; a conductive carbon material, such as graphene, carbon nanotube, etc.; a nano-conductive material, such as metal nanoparticles or nanowires, etc.; an ultrathin metal layer capable of maintaining a certain light transmittance, and a composite stack containing the same, such as a metal layer formed of a metal such as gold, platinum, silver, copper, cobalt, nickel, indium, or aluminum, or a film stack containing an alloy of any of these metals.

[0075] Further, the lower electrode layer 102 preferably has a thickness of 50-500 nm.

[0076] In an embodiment, the functional layer 12 comprises a first charge transport layer 121, a photoactive layer 122, and a second charge transport layer 123.

[0077] The photoactive layer 122 comprises an electron donor material and an electron acceptor material.

[0078] Preferably, the donor material is selected from a polymeric donor material; the donor material can be selected from one, two, or more of PBDB-T, PM6, PM7, D18, D18-Cl, PTO2, PB2, PB2F, PTVT-BT, PTQ10, PTQ11, PBQx-TCl, PQM-Cl, J106, J52-Cl, PCE10, but is not limited thereto:

[0079] The acceptor material is selected from a non-fullerene polymeric acceptor material, a non-fullerene small molecule acceptor material, or a fullerene derivative. The non-fullerene small molecule acceptor material is preferably Y6, L8-BO, BTP-H2, N3, BTP-eC9, etc., but is not limited thereto. The non-fullerene polymeric acceptor material is selected from PY-IT, PTBPT, etc., but is not limited thereto. The fullerene derivative is selected from a C60 derivative or a C70 derivative, including but not limited to PC61BM ([6,6]-phenyl C61 butyric acid methyl ester), PC71BM ([6,6]-phenyl C71 butyric acid methyl ester), indolene-containing fullerene, etc., but is not limited thereto.

[0080] The first charge transport layer 121 and the second charge transport layer 123 are used in pairs, i.e. if the first charge transport layer 121 is an anode buffer layer, the second charge transport layer 123 is a cathode buffer layer; conversely, if the first charge transport layer 121 is a cathode buffer layer, the second charge transport layer 123 is an anode buffer layer. The function of the charge transport layer is to effectively selectively transport the electrons and holes separated from the photoactive layer to the corresponding electrode. Among them, the cathode buffer layer can efficiently transport electrons to the cathode, and its material can be a low work function metal oxide, a fullerene derivative, a polymer or a composite thereof, etc., such as titanium oxide (TiO x ), zinc oxide (ZnO), tin oxide (SnO2), polyethylenimine ethoxylated (PEIE), polyetherimide (PEI), PFN, PFN-Br, PDINN, PDINO, PNDIT-F3N-Br, PNDIT-F3N and ZnO-PEIE composite, PEI-Zn, ZnO-PEI composite, etc., but not limited thereto. The anode buffer layer can efficiently transport holes to the anode, and the material of the anode buffer layer is selected from PEDOT:PSS, molybdenum oxide (MoOx), vanadium oxide (V2O5), nickel oxide (NiO), tungsten oxide (WOx, preferably, x is selected from 2 or 3), small molecule self-assembled materials such as 2PACz, MeO-2PACz, etc., but not limited thereto.

[0081] The thickness of the photoactive layer 122 is preferably 50-500 nm; more preferably 100-200 nm.

[0082] The thickness of the first charge transport layer 121 is preferably 1-200 nm; more preferably 1-50 nm.

[0083] The thickness of the second charge transport layer 123 is preferably 1-200 nm; more preferably 1-50 nm.

[0084] The electrode extraction portion 17 and the upper electrode layer 13 material are selected from a semi-transparent or opaque conductive material. The conductive material can be a metal such as gold, platinum, silver, copper, cobalt, nickel, indium or aluminum or an alloy thereof; a conductive metal oxide such as indium oxide, zinc oxide, tin oxide, indium tin oxide (ITO), fluorine-doped tin oxide (FTO), gallium-doped zinc oxide (GZO), aluminum-doped zinc oxide (AZO), indium zinc oxide (IZO) and indium gallium zinc oxide (IGZO); a conductive polymer such as poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polypyrrole and polyaniline; a conductive carbon material such as graphene, carbon nanotube, etc.; a nano-conductive material such as metal nanoparticles or nanowires, etc.; or a composite of the above conductive materials, etc.

[0085] In a specific embodiment, the electrode extraction portion 17 and the upper electrode layer 13 material are selected from Ag or Al and alloys thereof.

[0086] In an embodiment, the sealant layer 14 material can be selected from a sealant or a sealant film.

[0087] In a specific embodiment, the sealant layer 14 material is selected from a silicone sealant, a butyl sealant, an epoxy sealant, an acrylic sealant, a UV-cured sealant or an AB component sealant, but is not limited thereto.

[0088] The upper cover plate 15 can be selected from a glass.

[0089] As shown in FIG. 1, the organic photovoltaic device 1 further comprises an upper cover plate 15, a sealant layer 14, an upper electrode layer 13, an electrode extraction portion 17 and a lower electrode layer 12. Figure 8 As shown in FIG. 1, the organic photovoltaic device 1 further comprises an upper cover plate 15, a sealant layer 14, an upper electrode layer 13, an electrode extraction portion 17 and a lower electrode layer 12.

[0090] In an embodiment, according to the organic photovoltaic-based device as described above, the organic photovoltaic device and the integrated device are connected through a conductive spring.

[0091] The advantage of the spring connection is that, compared with the traditional tab connection, this connection method does not require accurate positioning of the spring, and the power supply connection of the battery can be achieved in a small space inside the organic photovoltaic device.

[0092] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0093] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An organic photovoltaic device, comprising a lower substrate, an organic photovoltaic module, a sealant layer, a top cover, and an electrode extraction portion, wherein the organic photovoltaic module is encapsulated within a space formed by the lower substrate, the top cover, and the sealant layer, the organic photovoltaic module includes a lower electrode layer, an upper electrode layer, and a functional layer located between the lower electrode layer and the upper electrode layer, the lower electrode layer being located on the upper surface of the lower substrate, the electrode extraction portion being integrally formed with the upper electrode layer and located on the upper surface of the lower substrate, wherein the electrode extraction portion includes a connecting portion and an end portion, the connecting portion being located inside the top cover, and the end portion being located outside the top cover and exposed, characterized in that: The organic photovoltaic device further includes an end conductive layer, which is stacked on the upper surface of the end of the electrode extraction portion or on the upper surface of the end of the electrode extraction portion and the upper surface of the lower substrate.

2. The organic photovoltaic device according to claim 1, characterized in that: The end conductive layer is a single metal layer or a metal alloy layer.

3. The organic photovoltaic device according to claim 2, characterized in that: The end conductive layer is a metal alloy layer, which is selected from low-temperature alloy materials, and the melting point of the low-temperature alloy materials is selected from 40-180℃.

4. The organic photovoltaic device according to claim 3, characterized in that: The low-temperature alloy material is selected from one of the following: bismuth indium tin alloy, tin lead bismuth alloy, bismuth indium tin cadmium alloy, Newton alloy, and Hastelloy alloy.

5. The organic photovoltaic device according to claim 1, characterized in that: The end conductive layer is a single metal material, which is selected from conductive copper foil tape or aluminum foil tape.

6. The organic photovoltaic device according to claim 1, characterized in that: The organic photovoltaic module comprises n organic photovoltaic cell units, each of which includes a lower electrode layer, an upper electrode layer, and a functional layer located between the lower electrode layer and the upper electrode layer, where n is selected from an integer greater than or equal to 2.

7. The organic photovoltaic device according to claim 6, characterized in that: The organic photovoltaic device has two or more electrode extraction sections, and the electrode extraction sections are integrally formed with the upper electrode of the organic photovoltaic cell unit.

8. The organic photovoltaic device according to claim 1, characterized in that: The organic photovoltaic module includes n organic photovoltaic cell units electrically connected in series, and the organic photovoltaic device has two electrode extraction parts. The two electrode extraction parts are integrally formed with the upper electrode of the outermost organic photovoltaic cell unit located on opposite sides along the series direction of the organic photovoltaic module, where n is selected from an integer greater than or equal to 2.

9. The organic photovoltaic device according to claim 1, characterized in that: The sealant layer is located only at the four edges of the upper cover plate, forming an edge encapsulation of the organic photovoltaic module in conjunction with the lower substrate; Alternatively, the sealant layer can cover the top cover plate and, together with the lower substrate, form a full-surface encapsulation of the organic photovoltaic cell module.

10. The organic photovoltaic device according to claim 1, characterized in that: The lower substrate is selected from glass, and the upper cover plate is selected from glass.

11. A device based on organic photovoltaics, characterized in that: It includes an organic photovoltaic device as described in any one of claims 1-10 and an integrated device connected to the organic photovoltaic device.

12. The device based on organic photovoltaics according to claim 11, characterized in that: The organic photovoltaic device and the integrated device are connected by conductive springs.

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