Organic solar cell module

Abstract

The utility model relates to an organic solar cell module, which comprises a first electrode taking-out part and a second electrode taking-out part which are arranged on a substrate, and the first electrode taking-out part and the second electrode taking-out part are integrally formed with an upper electrode layer. The organic solar cell module is located in the annular interior defined by the first electrode taking-out part and the second electrode taking-out part. According to the organic solar cell module, on one hand, the effective area of the module can be increased, on the other hand, the electrodes and the product application end are easier to integrate, the efficiency of the organic solar cell module is improved, and the organic solar cell module can be applied to diversified market requirements.

Description

Technical Field

[0001] The utility model relates to an organic solar cell, in particular to an organic solar cell module. Background Art

[0002] As a clean energy source that is inexhaustible and renewable, solar energy has developed rapidly, and inorganic solar cells have been commercially applied. Compared with inorganic solar cells, organic solar cells have the characteristics of flexibility, semi-transparency, and can be prepared by large-area printing, and have broad application and development prospects in wearable electronic devices, the Internet of Things, electronic price tags, building-integrated photovoltaics, new energy vehicles, etc. Currently, organic solar cell modules face problems in large-area preparation processes, such as laser scribing processes, module structures, electrode lead-out methods, etc., which severely limit their industrialization process.

[0003] In order to expand the application scenarios of organic solar cells, on the one hand, organic solar cell modules must be fully protected by encapsulation to isolate the contact between organic solar cell units and air and / or oxygen and / or water, thereby improving the stability of the device; on the other hand, it is also necessary to optimize the module structure to reduce the dead zone area, thereby increasing the effective area of the module and improving the efficiency of the module.

[0004] Chinese Patent 202321243727.3, a photovoltaic cell encapsulation structure, discloses an encapsulation structure for a solar cell. By connecting electrode wires to the upper electrode layer of the organic solar cell, the electrode lead-out is realized. However, the wires will not be closely attached to the substrate, thus affecting the sealing effect of the device.

[0005] Therefore, there is an urgent need to develop new modules that are more suitable for industrial production to promote the industrial application of organic solar cells. Summary of the Invention

[0006] The purpose of the utility model is to provide an organic solar cell module, by taking out the electrodes on the same side in the organic solar cell module, on the one hand, the effective area of the module is increased, and on the other hand, the electrodes are more easily integrated with the product application end, which is more conducive to meeting the diverse market demands while improving the efficiency of the organic solar cell module.

[0007] To achieve the purpose of the utility model, the technical solutions are as follows:

[0008] An organic solar cell module includes: a substrate, an organic solar cell module, a first electrode extraction part, a second electrode extraction part, and an encapsulation layer;

[0009] The organic solar cell module is located above the substrate; the organic solar cell module includes n organic solar cell units connected in series, and each organic solar cell unit includes a lower electrode layer, an upper electrode layer, and a photoelectric conversion layer located between the lower electrode layer and the upper electrode layer. Among them, the lower electrode layer is located on the substrate; n is an integer greater than or equal to 2;

[0010] The first electrode extraction part and the second electrode extraction part are located above the substrate. The first electrode extraction part is only connected to the upper electrode layer of the first organic solar cell unit in the organic solar module, and the second electrode extraction part is only connected to the upper electrode layer of the nth organic solar cell unit in the organic solar module. The first electrode extraction part and the upper electrode layer of the first organic solar cell unit are of an integrally formed structure, and the second electrode extraction part and the upper electrode layer of the nth organic solar cell unit are of an integrally formed structure; the first organic solar cell unit and the nth organic solar cell unit are respectively located on the outermost opposite sides along the series connection direction of the organic solar module; and the organic solar cell module is located inside the ring formed by the first electrode extraction part and the second electrode extraction part;

[0011] The encapsulation layer is located above the organic solar cell module, the first electrode extraction part, and the second electrode extraction part.

[0012] Furthermore, the first organic solar cell unit and the nth organic solar cell unit are respectively located on the outermost sides along the series connection direction of the organic solar module.

[0013] The substrate, the first electrode extraction part, the second electrode extraction part, and the encapsulation layer form a sealed space, and the solar cell module is located inside the sealed space.

[0014] Furthermore, the n organic solar cell units are connected in series through a channel assembly. The channel assembly is composed of an insulating channel P1, a connecting channel P2, and a partition channel P3. The insulating channel P1 is located between the photoelectric conversion layer and the 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 photoelectric conversion layer, and the partition channel P3 penetrates the upper electrode layer or penetrates the upper electrode layer and part or all of the photoelectric conversion layer.

[0015] Furthermore, the first electrode extraction part includes a first electrode extraction part end, and the second electrode extraction part includes a second electrode extraction part end; the first electrode extraction part end and the second electrode extraction part end are located on the same side.

[0016] Furthermore, the first electrode extraction part end and the second electrode extraction part end are located on one side along the series connection direction of the n organic solar cell units.

[0017] Furthermore, the organic solar cell module has a rectangular structure, and the first electrode extraction part surrounds three sides of the organic solar cell module, while the second electrode extraction part is located on the remaining side of the organic solar cell module.

[0018] Furthermore, the first electrode extraction part is disconnected from the remaining n - 1 organic solar cell units that are not connected and the second electrode extraction part by two disconnection channels P4; the two disconnection channels P4 are located on opposite sides of the organic solar cell module, and the disconnection channels P4 are located above the substrate 101.

[0019] Furthermore, the two disconnection channels (P4) are perpendicular to the direction of the channel assembly.

[0020] Furthermore, both the first electrode extraction part and the second electrode extraction part are located at the four peripheral edges of the substrate.

[0021] Furthermore, the photoelectric conversion layer includes a first charge transport layer, a photoactive layer, and a second charge transport layer. The first charge transport layer is located between the lower electrode layer and the photoactive layer, and the second charge transport layer is located between the upper electrode layer and the photoactive layer.

[0022] Furthermore, the organic solar cell unit is a forward - structure device, the lower electrode layer is an anode, the upper electrode layer is a cathode, and the organic solar cell unit includes an anode, an anode buffer layer, a photoactive layer, a cathode buffer layer, and a cathode stacked in sequence from bottom to top. The first electrode extraction part is the anode, and the second electrode extraction part is the cathode.

[0023] Or, the organic solar cell unit is a reverse - structure device, the lower electrode layer is a cathode, the upper electrode layer is an anode, and the organic solar cell unit is stacked with a cathode, a cathode buffer layer, a photoactive layer, an anode buffer layer, and an anode in sequence from bottom to top. The first electrode extraction part is the cathode, and the second electrode extraction part is the anode.

[0024] Furthermore, the encapsulation layer includes a sealant layer and an upper cover plate. The sealant layer is located between the upper cover plate and the substrate. The substrate, the first electrode extraction part, the second electrode extraction part, the sealant layer, and the upper cover plate form a sealed space, and the organic solar cell module is located within the sealed space.

[0025] Furthermore, the sealant layer is only located at the four peripheral edges of the upper cover plate, and together with the substrate, the first electrode extraction part, and the second electrode extraction part, it forms an edge encapsulation for the organic solar cell module.

[0026] Or, the sealant layer covers the entire upper cover plate, and together with the substrate, the first electrode extraction part, and the second electrode extraction part, it forms a full - surface encapsulation for the organic solar cell module.

[0027] Compared with the prior art, the remarkable advantages of the present utility model are as follows:

[0028] For the organic solar cell module provided in this application, by integrally forming the electrode extraction part with the organic solar cell module, the entry of water and oxygen is effectively avoided, thereby improving the stability of the device; on the other hand, the electrode extraction part forms a ring around the organic solar cell module. On the one hand, it can increase the effective area of the module, and on the other hand, it makes it easier to integrate the electrode with the product application end, which is more conducive to meeting the diverse market demands while improving the efficiency of the organic solar cell module. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention and their design solutions, the accompanying drawings required for this embodiment will be briefly introduced below. The accompanying drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a top view of the organic solar cell module of Embodiment 1 of the present utility model without a packaging layer.

[0031] Figure 2 It is a top view of the packaged organic solar cell module shown in Embodiment 1 of the present utility model.

[0032] Figure 3 It is Figure 1 a cross-sectional view taken along the A-A direction in

[0033] Figure 4 It is Figure 1 a cross-sectional view taken along the B-B direction in

[0034] Figure 5 It is Figure 1 a cross-sectional view taken along the C-C direction in

[0035] Figure 6 It is Figure 2 a cross-sectional view taken along the A-A direction in

[0036] Figure 7 It is Figure 2 a cross-sectional view taken along the B-B direction in

[0037] Among them, 101 is a substrate, 102 is a lower electrode layer, 103 is a photoelectric conversion layer, 104 is an upper electrode layer, 105 is a packaging layer, 106 is a first charge transport layer, 107 is a photoactive layer, 108 is a second charge transport layer, 109 is an upper cover plate, 110 is a sealant layer, 1 is a first electrode extraction part, 11 is the end of the first electrode extraction part, 2 is a second electrode extraction part, 21 is the end of the second electrode extraction part, P1 is an insulating channel, P2 is a connecting channel, P3 is a partition channel, and P4 is a disconnecting channel. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, inside, outside, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence. Nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0041] An organic solar cell module, comprising: a substrate 101, an organic solar cell module, a first electrode extraction part 1, a second electrode extraction part 2, and a packaging layer 105;

[0042] The organic solar cell module is located above the substrate 101; the organic solar cell module includes n organic solar cell units connected in series, and each organic solar cell unit includes a lower electrode layer 102, an upper electrode layer 104, and a photoelectric conversion layer 103 located between the lower electrode layer 102 and the upper electrode layer 104. Among them, the lower electrode layer 102 is located on the substrate 101; n is an integer greater than or equal to 2;

[0043] The first electrode extraction part 1 and the second electrode extraction part 2 are located on the upper part of the substrate. The first electrode extraction part 1 is only connected to the upper electrode layer 104 of the first organic solar cell unit in the organic solar module. The second electrode extraction part 2 is only connected to the upper electrode layer 104 of the nth organic solar cell unit in the organic solar module. The first electrode extraction part 1 and the upper electrode layer 104 of the first organic solar cell unit are of an integrally formed structure. The second electrode extraction part 2 and the upper electrode layer 104 of the nth organic solar cell unit are of an integrally formed structure. The first organic solar cell unit and the nth organic solar cell unit are respectively located on the opposite sides of the organic solar module along the series connection direction. And the organic solar cell module is located inside the ring formed by the first electrode extraction part 1 and the second electrode extraction part 2.

[0044] The encapsulation layer 105 is located on the upper parts of the organic solar cell module, the first electrode extraction part 1 and the second electrode extraction part 2.

[0045] The substrate 101, the first electrode extraction part 1, the second electrode extraction part 2 and the encapsulation layer 105 form a sealed space, and the solar cell module is located in the sealed space.

[0046] The "integrally formed" means that the same materials and processes are used for simultaneous preparation, and the prepared structure is a whole.

[0047] The statement that "the organic solar cell module is located inside the ring formed by the first electrode extraction part 1 and the second electrode extraction part 2" means that the first electrode extraction part 1 and the second electrode extraction part 2 are located on the outer periphery of the organic solar cell module. However, it should be noted that the first electrode extraction part 1 and the second electrode extraction part 2 are two parts and are not connected. For example, when the electrode corresponding to the first electrode extraction part 1 is the cathode, the electrode corresponding to the second electrode extraction part 2 is the anode. Similarly, when the electrode corresponding to the first electrode extraction part 1 is the anode, the electrode corresponding to the second electrode extraction part 2 is the cathode.

[0048] Furthermore, the first organic solar cell unit and the nth organic solar cell unit are respectively located on the outermost sides of the organic solar module along the series connection direction.

[0049] The statement that "the first organic solar cell unit and the nth organic solar cell unit are respectively located at the outermost sides of the organic solar module along the series connection direction" means that the organic solar cell module includes n series-connected organic solar cell units, and refers to the first organic solar cell unit and the last organic solar cell unit when counting along the series connection direction (the current flowing direction). For example: when n = 2, the outermost sides refer to the first organic solar cell unit and the second organic solar cell unit along the series connection direction; when n = 3, the outermost sides refer to the first organic solar cell unit and the third organic solar cell unit along the series connection direction; when n = 4, the outermost sides refer to the first organic solar cell unit and the fourth organic solar cell unit along the series connection direction; and so on.

[0050] In the present invention, the first electrode extraction part 1 is only connected to the upper electrode layer 104 of one organic solar cell unit, that is, the first organic solar cell unit; the second electrode extraction part 2 is also only connected to the upper electrode layer 104 of another organic solar cell unit, that is, the nth organic solar cell unit. The first electrode extraction part 1 is not connected to the remaining n - 1 organic solar cell units in the organic solar cell module; similarly, the second electrode extraction part 2 is not connected to the remaining n - 1 organic solar cell units in the organic solar cell module.

[0051] In the present invention, the statement that "the organic solar cell module includes n organic solar cell units connected in series" means that the n organic solar cell units in the organic solar cell module are connected in series through a channel component. The channel component is composed of an insulating channel P1, a connecting channel P2, and a partition channel P3. The insulating channel P1 is located between the optoelectronic conversion layer 103 and the substrate 101 and penetrates through the lower electrode layer 102, the connecting channel P2 is located between the upper electrode layer 104 and the lower electrode layer 102 and penetrates through the optoelectronic conversion layer 103, and the partition channel P3 penetrates through the upper electrode layer 104, or penetrates through the upper electrode layer 104 and part or all of the optoelectronic conversion layer 103.

[0052] In one embodiment, the partition channel P3 only penetrates through the upper electrode layer 104.

[0053] In another embodiment, the partition channel P3 penetrates through the upper electrode layer 104 and part of the optoelectronic conversion layer 103.

[0054] In another embodiment, the partition channel P3 penetrates through the upper electrode layer 104 and all of the optoelectronic conversion layer 103 to the lower electrode layer. The "insulating channel P1" divides the lower electrode layer 102 into multiple lower electrode layer units, such that the multiple lower electrode layer units are disconnected and not connected to each other. The function of the "insulating channel P1" is to divide the lower electrode layer into multiple independent lower electrode layer units so that they are not electrically conductive to each other.

[0055] The "connection channel P2" divides the optoelectronic conversion layer 103 into multiple optoelectronic conversion layer 103 units, such that the multiple optoelectronic conversion layers 103 are disconnected and not connected to each other. The function of the "connection channel P2" is to establish an electrode connection channel between adjacent two organic solar cell units. The upper electrode layer of the second organic solar cell unit is connected to the lower electrode layer of the first organic solar cell unit through the "connection channel P2" to form a conductive circuit.

[0056] The "partition channel P3" divides the upper electrode layer 104 into multiple upper electrode layer units, such that the multiple upper electrode layer units are disconnected and not connected to each other. The function of the "partition channel P3" is to divide the upper electrode layer into multiple independent upper electrode layer units, such that they are not electrically conductive to each other.

[0057] The first electrode extraction portion 1 includes a first electrode extraction portion end 11; the second electrode extraction portion 2 includes a second electrode extraction portion end 21, and the first electrode extraction portion end 11 and the second electrode extraction portion end 21 are located on the same side of the organic solar cell module. The "electrode extraction portion end" refers to the position where the electrode extraction portion is electrically connected to an external device.

[0058] Further, the first electrode extraction portion end 11 and the second electrode extraction portion end 21 are located on one side along the series connection direction of n organic solar cell units.

[0059] In an embodiment, the organic solar cell module is a rectangular structure. The first electrode extraction portion 1 surrounds three sides of the organic solar cell module, and the second electrode extraction portion 2 is located on the remaining side of the organic solar cell module.

[0060] In the present invention, the first electrode extraction portion 1 is disconnected from the remaining n - 1 organic solar cell units and the second electrode extraction portion 2 by two disconnection channels P4. Further, the two disconnection channels P4 are located on opposite sides of the organic solar cell module, and the disconnection channels P4 are located above the substrate 101 (i.e., at the upper surface of the substrate 101). Furthermore, the two disconnection channels P4 are perpendicular to the direction of the channel assembly, that is, perpendicular to the insulating channel P1, the connection channel P2, and the partition channel P3, and the disconnection channels P4 penetrate through the first electrode extraction portion 1 located on the substrate 101 until the substrate 101.

[0061] In a specific embodiment, both the first electrode extraction portion 1 and the second electrode extraction portion 2 are located at the four peripheral edges of the substrate 101. That is, the first electrode extraction portion 1 and the second electrode extraction portion 2 are aligned with the edges of the substrate. The substrate 101, the first electrode extraction portion 1, the second electrode extraction portion 2, and the encapsulation layer 105 form a sealed space, and the solar cell module is located within the sealed space.

[0062] In one embodiment, the optoelectronic conversion layer 103 includes at least one photoactive layer 107. Further, the optoelectronic conversion layer 103 includes at least one photoactive layer 107 and one charge transport layer.

[0063] In a specific embodiment, the optoelectronic conversion layer 103 includes a first charge transport layer 106, a photoactive layer 107, and a second charge transport layer 108. The first charge transport layer 106 is located between the lower electrode layer and the photoactive layer 107, and the second charge transport layer 108 is located between the upper electrode layer and the photoactive layer 107.

[0064] It should be noted that, in order to improve the performance of the organic solar cell device, the optoelectronic conversion layer 103 may further include other functional layers, including but not limited to a charge injection layer and / or a charge blocking layer.

[0065] In the present application, the organic solar cell unit may be a forward structure device, that is, the lower electrode layer 102 is the anode, the upper electrode layer 104 is the cathode, and the organic solar cell unit is stacked with an anode layer, an anode buffer layer, a photoactive layer 107, a cathode buffer layer, and a cathode layer from bottom to top. The first electrode extraction portion 1 is the anode, and the second electrode extraction portion 2 is the cathode.

[0066] In the present application, the organic solar cell unit may also be a reverse structure device, the lower electrode layer 102 is the cathode, the upper electrode layer 104 is the anode, and the organic solar cell unit is stacked with a cathode layer, a cathode buffer layer, a photoactive layer 107, an anode buffer layer 108, and an anode 104 from bottom to top. The first electrode extraction portion 1 is the cathode, and the second electrode extraction portion 2 is the anode.

[0067] In one embodiment, the encapsulation layer 105 includes a sealant layer 110 and an upper cover plate 109. The sealant layer 110 is located between the upper cover plate 109 and the substrate 101. The substrate 101, the first electrode extraction portion 1, the second electrode extraction portion 2, the sealant layer 110, and the upper cover plate 109 form a sealed space, and the organic solar cell module is located in the sealed space. Thus, the organic solar cell module is encapsulated.

[0068] In one embodiment, the sealant layer 110 is only located at the four peripheral edges of the upper cover plate 109, and the organic solar cell module is edge-encapsulated by combining the substrate 101, the first electrode extraction portion 1, and the second electrode extraction portion 2.

[0069] It should be noted that the "four peripheral edges" refer to the inner four peripheral edges corresponding to the positive projection of the bonding direction between the upper cover plate 109 and the substrate 101.

[0070] In one embodiment, the sealant layer 110 covers the entire upper cover plate 109, and together with the substrate 101, the first electrode extraction portion 1, and the second electrode extraction portion 2, a full-surface encapsulation of the organic solar cell module is formed.

[0071] In one embodiment, the area of the upper cover plate 109 is smaller than the area of the substrate 101, so that the ends 11 of the first electrode extraction portion and the ends 21 of the second electrode extraction portion are exposed, enabling them to be electrically connected to an external device for driving. In a specific embodiment, along the series direction of the organic solar cell units, the length of the upper cover plate 109 is smaller than the length of the substrate 101, and perpendicular to the series direction of the organic solar cell units, the length of the upper cover plate 109 is equal to the length of the substrate 101, so that the ends 11 of the first electrode extraction portion and the ends 21 of the second electrode extraction portion are partially exposed, enabling them to be electrically connected to an external device for driving.

[0072] The present invention can also expose the ends 11 of the first electrode extraction portion and the ends 21 of the second electrode extraction portion by means of punching, so as to achieve electrical connection and driving with an external device.

[0073] In the present application, the organic solar cell module includes n organic solar cell units. In one embodiment, n is selected from integers greater than or equal to 3; in another embodiment, n is selected from integers greater than or equal to 4; in another embodiment, n is selected from integers greater than or equal to 5; in another embodiment, n is selected from integers greater than or equal to 6; in another embodiment, n is selected from integers greater than or equal to 10; in another embodiment, n is selected from integers greater than or equal to 15; in another embodiment, n is selected from integers greater than or equal to 20. The number of the organic solar cell units can be specifically selected according to the performance requirements of the product application end.

[0074] The materials that can be used in the organic solar cell assembly are as follows:

[0075] The substrate 101 is a light-transmitting plastic or light-transmitting glass substrate, and materials with excellent transparency, surface smoothness, easy operability, and waterproofness can be used.

[0076] The substrate 101 can be rigid or flexible. Specifically, a glass substrate, a thin-film glass substrate, or a transparent plastic substrate can be used. The transparent plastic substrate can include films in the form of single layers or multiple layers, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether ether ketone (PEEK), and polyimide (PI), etc., but not limited thereto.

[0077] In one embodiment, the substrate 101 is selected from transparent plastic substrates. Preferably, the substrate 101 further includes a water and oxygen barrier layer. Further, the material of the water and oxygen barrier layer is selected from oxides, nitrides, organic materials, or combinations thereof to improve the encapsulation effect. The water and oxygen barrier layer can be located above the substrate 101 and on the side facing the lower electrode layer 102, or below the substrate 101 and on the side away from the lower electrode layer 102.

[0078] The lower electrode 102 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 nanotubes, etc.; a nano-conductive material, such as metal nanoparticles or nanowires, etc.; an ultra-thin metal layer capable of maintaining a certain light transmittance and a composite laminate 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 laminate of an alloy containing any one of these metals.

[0079] Further, the thickness of the lower electrode layer 102 is preferably 50 - 500 nm.

[0080] In one embodiment, the photoelectric conversion layer 103 includes a first charge transport layer 106, a photoactive layer 107, and a second charge transport layer 108.

[0081] The photoactive layer 107 includes an electron donor material and an electron acceptor material.

[0082] Preferably, the donor material is selected from polymer donor materials; 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, but is not limited thereto:

[0083] The receptor material is selected from non-fullerene polymer receptor materials, non-fullerene small molecule receptor materials or fullerene derivatives. The non-fullerene small molecule receptor materials are preferably Y6, L8-BO, BTP-H2, N3, BTP-eC9, etc., but are not limited thereto. The non-fullerene polymer receptor materials are selected from PY-IT, PTBPT, etc., but are not limited thereto. The fullerene derivatives are selected from C60 derivatives or C70 derivatives, and the fullerene derivatives include but are not limited to: PC61BM ([6,6]-phenyl C61 butyric acid methyl ester), PC71BM ([6,6]-phenyl C71 butyric acid methyl ester), indene-containing fullerenes, etc., but are not limited thereto.

[0084] The first charge transport layer 106 and the second charge transport layer 108 are used in pairs. That is, if the first charge transport layer 106 is an anode buffer layer, then the second charge transport layer 108 is a cathode buffer layer; conversely, if the first charge transport layer 106 is a cathode buffer layer, then the second charge transport layer 108 is an anode buffer layer. The function of the charge transport layer is to effectively and selectively transport the electrons and holes separated from the photoactive layer to the corresponding electrodes. Among them, the cathode buffer layer can efficiently transport electrons to the cathode, and its materials can be metal oxides with low work function, fullerene derivatives, polymers or their composites, etc., such as titanium oxide (TiO x ), zinc oxide (ZnO), tin oxide (SnO 2 ), polyethylenimine ethoxylated (PEIE), polyetherimide (PEI), PFN, PFN-Br, and ZnO-PEIE composites, PEI-Zn, ZnO-PEI composites, etc., but are not limited thereto. The anode buffer layer can efficiently transport holes to the anode, and its materials can be metal oxides with high work function such as molybdenum oxide (MoO x ), vanadium oxide (V 2 O 5 ), nickel oxide (NiO), tungsten oxide (WO x ), etc., or polymer materials such as PEDOT:PSS and polyaniline derivatives, but are not limited thereto.

[0085] The thickness of the photoactive layer 107 is preferably 50 - 500 nm; more preferably 100 - 200 nm.

[0086] The thickness of the first charge transport layer 106 is preferably 1 - 200 nm; more preferably 1 - 50 nm.

[0087] The thickness of the second charge transport layer 108 is preferably 1 - 200 nm; more preferably 1 - 50 nm.

[0088] The materials of the first electrode extraction part 1, the second electrode extraction part 22, and the upper electrode layer 104 are selected from translucent or opaque conductive materials. The conductive materials can be metals such as gold, platinum, silver, copper, cobalt, nickel, indium, or aluminum, or their alloys; conductive metal oxides, 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); conductive polymers, such as poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polypyrrole, and polyaniline, etc.; conductive carbon materials, such as graphene, carbon nanotubes, etc.; nano-conductive materials, such as metal nanoparticles or nanowires, etc.; or composites of the above conductive materials, etc.

[0089] In a specific embodiment, the materials of the first electrode extraction part 1, the second electrode extraction part 2, and the upper electrode layer 104 are identically selected from Ag or Al and their alloys.

[0090] The first electrode extraction part 1 and the second electrode extraction part 2 are closely attached to the substrate 101.

[0091] In one embodiment, the material of the sealant layer 110 can be selected from sealants or applied sealant films.

[0092] In a specific embodiment, the material of the sealant layer 110 is selected from silicone rubber, butyl rubber, epoxy resin, acrylic resin, ultraviolet curable glue, or AB component glue, but not limited thereto.

[0093] The upper cover plate 109 can be selected from materials with excellent transparency, surface smoothness, ease of operation, and waterproofness. Specifically, glass encapsulation can be used, or flexible encapsulation can be used, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether ether ketone (PEEK), polyimide (PI), polyacrylate (PA), polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and thermoplastic polyurethane (TPU), etc., but not limited thereto.

[0094] Preferably, a water and oxygen barrier layer of an oxide layer, a nitride layer, an organic material layer, or a combination thereof is prepared on the flexible encapsulation film to improve the encapsulation effect. The water and oxygen barrier film is located on the side of the upper encapsulation layer 105 close to the organic solar cell module.

[0095] The preparation method of the present application will be further described in detail below in conjunction with specific embodiments, but not limited thereto.

[0096] Example 1:

[0097] As Figure 1-7As shown, for the organic solar cell module of the present application, the preparation method includes the following steps:

[0098] S1. A transparent ITO bottom electrode layer 102 is prepared on a glass substrate 101, and an insulating channel P1 is etched on the bottom electrode by 20 - nanosecond green light. Then, a first charge transport layer 106, a photoactive layer 107, and a second charge transport layer 108, namely a photoelectric conversion layer 103 (see Figure 7 ) are sequentially prepared by slot coating, and a connection channel P2 is etched by green nanosecond laser.

[0099] S2. Then, by laser etching, the bottom electrode layer 102 and the photoelectric conversion layer 103 of the organic solar cell module on both the upper and lower sides of the substrate 101, which are 5 mm away from the edge and 5 mm away from the left edge and 10 mm away from the right edge, are removed, so as to leave a first electrode extraction part 1, a second electrode extraction part 2, and a sealing position around the substrate 101 (see Figure 1 ).

[0100] S3. Subsequently, the upper metal silver electrode layer 104, the first electrode lead - out part 1, and the second electrode extraction part 2 are simultaneously prepared by vacuum evaporation. The silver layer covers the entire device (that is, the silver layer not only covers the organic solar cell module but also covers the positions around the substrate 101 where there is no organic solar cell module). A partition channel P3 is etched on the upper electrode by green nano - laser, and at the same time, a disconnection channel P4 is etched by 20 - nanosecond green light to complete the preparation of the organic solar cell module to be encapsulated, the first electrode lead - out part 1, and the second electrode extraction part 2.

[0101] S4. When encapsulating the organic solar cell module, the upper cover plate 109 is placed on the platform. The upper cover plate 109 is a transparent glass, and its length along the series connection direction of the organic solar cell module is 2.5 mm shorter than that of the substrate glass, so that the end part of the lead - out electrode is exposed, and the other dimensions are the same as those of the lower encapsulation layer 105. UV - curable glue is coated on the upper cover plate 109 by dot - coating, and the UV - curable glue is spaced 2 mm from the edge of the upper cover plate 109 to prevent the overflow of the encapsulation glue during the lamination process. Subsequently, the organic solar cell module to be encapsulated is placed face - down and aligned with the upper cover plate, and part of the end 11 of the first electrode extraction part 1 and the end 21 of the second electrode extraction part are exposed. A certain pressure is applied on the upper cover plate to tightly bond the upper and lower encapsulation layers 105 and the UV encapsulation glue together, and the UV encapsulation glue is cured by irradiating with a 365 - nm ultraviolet light source with an energy of 6 J / cm2 for 70 s, thereby obtaining the encapsulation structure as shown in Figure 2 .

[0102] The above are only the preferred embodiments of the present utility model, and are not intended to limit the scope of patent protection of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. An organic solar cell module, comprising: A substrate (101), an organic solar cell module, a first electrode extraction portion (1), a second electrode extraction portion (2) and an encapsulation layer (105); the organic solar cell module is located on the upper part of the substrate (101); the organic solar cell module comprises n organic solar cell units connected in series, each of the organic solar cell units comprises a lower electrode layer (102), an upper electrode layer (104) and a photoelectric conversion layer (103) located between the lower electrode layer (102) and the upper electrode layer (104), wherein the lower electrode layer (102) is located on the substrate (101); n is an integer greater than or equal to 2; the characteristics are: The first electrode lead-out portion (1) and the second electrode lead-out portion (2) are located on the upper part of the substrate (101); the first electrode lead-out portion (1) is only connected to the upper electrode layer (104) of the first organic solar cell unit in the organic solar cell module; the second electrode lead-out portion (2) is only connected to the upper electrode layer (104) of the nth organic solar cell unit in the organic solar cell module; the first electrode lead-out portion (1) and the upper electrode layer (104) of the first organic solar cell unit are an integrally formed structure; the second electrode lead-out portion (2) and the upper electrode layer (104) of the nth organic solar cell unit are an integrally formed structure; the first organic solar cell unit and the nth organic solar cell unit are respectively located on opposite sides of the organic solar cell module along the series connection direction; and the organic solar cell module is located inside a ring surrounded by the first electrode lead-out portion (1) and the second electrode lead-out portion (2); The encapsulation layer (105) is located on the upper part of the organic solar cell module, the first electrode extraction portion (1) and the second electrode extraction portion (2).

2. The organic solar cell assembly according to claim 1, characterized in that: The first organic solar cell unit and the nth organic solar cell unit are respectively located at the outermost sides of the organic solar cell module along the series connection direction.

3. The organic solar cell assembly according to claim 2, characterized in that: The n organic solar cell units are connected in series via a channel assembly, and the channel assembly is composed of an insulating channel P1, a connecting channel P2 and a separating channel P3.

4. The organic solar cell assembly according to claim 3, characterized in that: The first electrode lead-out portion (1) includes a first electrode lead-out portion end portion (11), and the second electrode lead-out portion (2) includes a second electrode lead-out portion end portion (21); the first electrode lead-out portion end portion (11) and the second electrode lead-out portion end portion (21) are located on the same side of the organic solar cell module.

5. The organic solar cell assembly according to claim 4, characterized in that: The first electrode lead-out portion end (11) and the second electrode lead-out portion end (21) are located on one side along the series connection direction of the n organic solar cell units.

6. The organic solar cell assembly according to claim 5, characterized in that: The organic solar cell module is a rectangular structure, the first electrode lead-out portion (1) surrounds three sides of the organic solar cell module, and the second electrode lead-out portion (2) is located on the remaining side of the organic solar cell module.

7. The organic solar cell assembly according to claim 6, characterized in that: The first electrode lead-out portion (1) is disconnected from the remaining n-1 organic solar cell units and the second electrode lead-out portion (2) which are not connected via two disconnection channels (P4); the two disconnection channels (P4) are located on opposite sides of the organic solar cell module, and the disconnection channels (P4) are located on the upper part of the substrate (101).

8. The organic solar cell assembly according to claim 7, characterized in that: The two disconnecting channels (P4) are perpendicular to the direction of the channel assembly.

9. The organic solar cell assembly according to claim 1, characterized in that: The first electrode lead-out portion (1) and the second electrode lead-out portion (2) are both located at the four edges of the substrate.

10. The organic solar cell assembly according to claim 1, characterized in that: The photoelectric conversion layer (103) comprises a first charge transport layer (106), a photoactive layer (107) and a second charge transport layer (108), wherein the first charge transport layer (106) is located between the lower electrode layer (102) and the photoactive layer (107), and the second charge transport layer (108) is located between the upper electrode layer (104) and the photoactive layer (107).

11. The organic solar cell assembly according to claim 10, characterized in that: The lower electrode layer (102) is an anode, the upper electrode layer (104) is a cathode, the organic solar cell unit comprises an anode, an anode buffer layer, a photoactive layer, a cathode buffer layer and a cathode stacked in sequence from bottom to top, the first electrode extraction portion (1) is an anode, and the second electrode extraction portion (2) is a cathode; Or the lower electrode layer (102) is a cathode, the upper electrode layer (104) is an anode, the organic solar cell unit is stacked with a cathode, a cathode buffer layer, a photoactive layer, an anode buffer layer and an anode in sequence from bottom to top, the first electrode extraction portion (1) is a cathode, and the second electrode extraction portion (2) is an anode.

12. The organic solar cell device according to claim 1, characterized in that: The substrate (101), the first electrode lead-out portion (1), the second electrode lead-out portion (2), and the encapsulation layer (105) form a sealed space, and the solar cell module is located in the sealed space; The encapsulation layer (105) comprises a sealant layer (110) and an upper cover plate (109); the sealant layer (110) is located between the upper cover plate (109) and the substrate (101); the substrate (101), the first electrode lead-out portion (1), the second electrode lead-out portion (2), the sealant layer (110) and the upper cover plate (109) form a sealed space; the organic solar cell module is located in the sealed space.

13. The organic solar cell device according to claim 12, characterized in that: The sealant layer (110) is only located at the edges of the upper cover plate (109) and is combined with the substrate (101), the first electrode lead-out portion (1) and the second electrode lead-out portion (2) to form an edge package for the organic solar cell module; Alternatively, the sealant layer (110) completely covers the upper cover plate (109), and is combined with the substrate (101), the first electrode lead-out portion (1), and the second electrode lead-out portion (2) to form a full-surface encapsulation of the organic solar cell module.

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