High-efficiency photovoltaic cell panel

Abstract

The utility model relates to a high-efficiency photovoltaic cell panel which comprises a transparent conductive glass substrate, a back contact electrode is arranged on the transparent conductive glass substrate, a transparent conductive layer is arranged on the back contact electrode, a light absorption layer is arranged on the transparent conductive layer, and a charge transport layer is deposited on the light absorption layer. A back electrode layer is arranged on the charge transport layer, the charge transport layer comprises an electron transport layer and a hole transport layer, the electron transport layer is deposited on the light absorption layer, the hole transport layer is deposited on the electron transport layer, and the hole transport layer is arranged below the back electrode layer. The photovoltaic cell panel provided by the utility model has the advantages that the light energy conversion efficiency is effectively improved, the stability and the reliability of the photovoltaic cell panel are effectively ensured through a reasonable manufacturing process, the production cost is reduced, the performance of the photovoltaic cell panel in a severe environment is not excessively reduced, and the service life of the photovoltaic cell panel is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic battery panels, in particular to a high-efficiency photovoltaic battery panel. Background Art

[0002] Photovoltaic panels, also known as solar panels, photovoltaic power generation panels, etc., are devices that convert solar energy into electrical energy. Photovoltaic panels are assembled by a number of solar cell modules on a board in a certain way. They are usually used as a unit of a photovoltaic array and can convert sunlight energy into direct current electricity. In people's daily lives, photovoltaic panels are widely used in solar energy application systems in homes, industries and commercial places.

[0003] Patent publication number CN108767039B discloses a photovoltaic cell panel and a method for preparing the same. The method includes the following steps: forming a photovoltaic cell backplane, forming a plurality of parallel convex strips on the upper surface of a PET resin plate, forming a plurality of blind holes arranged in a matrix on the lower surface of the photovoltaic cell backplane, embedding a heat-conducting column in each of the blind holes, and the heat-conducting column is flush with the lower surface of the photovoltaic cell backplane, arranging a photovoltaic cell sheet on the second side surface of each of the convex strips, laying a first EVA heat-conducting encapsulation adhesive layer on the surface of the photovoltaic cell backplane, laying a second EVA adhesive layer on the first EVA heat-conducting encapsulation adhesive layer, laying a transparent glass plate on the second EVA adhesive layer, and performing a lamination process to form the photovoltaic cell panel.

[0004] However, the above device still has the following problems during implementation:

[0005] With the growing demand for clean energy, photovoltaic power generation has received widespread attention as a sustainable way to obtain energy. However, existing photovoltaic panels still have certain limitations in terms of light energy conversion efficiency, stability and cost. The conversion efficiency is difficult to further improve, and the performance is easily degraded in harsh environments such as high temperature and high humidity. Utility Model Content

[0006] The purpose of the present utility model is to solve the problems in the prior art, such as the existing photovoltaic panels still have certain limitations in terms of light energy conversion efficiency, stability and cost, the conversion efficiency of photovoltaic panels is difficult to further improve, and the performance is easily degraded in harsh environments such as high temperature and high humidity, and to propose a high-efficiency photovoltaic panel.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A high-efficiency photovoltaic cell panel includes a transparent conductive glass substrate, a back contact electrode is provided on the transparent conductive glass substrate, a transparent conductive layer is provided on the back contact electrode, a light absorption layer is provided on the transparent conductive layer, a charge transport layer is deposited on the light absorption layer, a back electrode layer is provided on the charge transport layer, a buffer layer, a window layer and an anti-reflection layer are sequentially provided on the back electrode layer, a front contact electrode is provided on the anti-reflection layer, the charge transport layer includes an electron transport layer and a hole transport layer, the electron transport layer is deposited on the light absorption layer, the hole transport layer is deposited on the electron transport layer, the hole transport layer is provided below the back electrode layer, and the light absorption layer is made of a perovskite material.

[0009] In some embodiments, the electron transport layer uses titanium dioxide nanoparticles, and the hole transport layer uses spiro-OMeTAD material.

[0010] In some embodiments, the transparent conductive layer is a fluorine-doped tin oxide thin film, and the thickness of the transparent conductive layer is 120-200 nm.

[0011] In some embodiments, the thickness of the light absorbing layer is 300-500 nm, the particle size of the titanium dioxide nanoparticles on the electron transport layer is 20-30 nm, and the thickness of the titanium dioxide nanoparticles is 50-150 nm.

[0012] In some embodiments, the thickness of the hole transport layer is 100-200 nm.

[0013] In some embodiments, the back electrode layer is a gold electrode, and the thickness of the back electrode layer is 100-200 nm.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This high-efficiency photovoltaic panel uses a new type of perovskite material as the light absorption layer, and combines it with an electron transport layer prepared from titanium dioxide nanoparticles and a hole transport layer prepared from spiro-OMeTAD material to form a better charge transport layer, which is convenient for effectively improving the light energy conversion efficiency. At the same time, through a reasonable manufacturing process, that is, using magnetron sputtering, solution method and vacuum evaporation method to prepare the transparent conductive layer, light absorption layer and back electrode layer, the stability and reliability of the photovoltaic panel are effectively guaranteed, and the production cost is reduced at the same time, so that the performance of the photovoltaic panel will not be excessively reduced in harsh environments, greatly extending the service life of the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the high-efficiency photovoltaic panel proposed in this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the structure of the high-efficiency photovoltaic panel proposed in the present utility model.

[0018] In the figure: 1. Transparent conductive glass substrate; 2. Back contact electrode; 3. Transparent conductive layer; 4. Light absorption layer; 5. Charge transport layer; 501. Electron transport layer; 502. Hole transport layer; 6. Back electrode layer; 7. Buffer layer; 8. Window layer; 9. Anti-reflection layer; 10. Front contact electrode. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example

[0021] Reference Figure 1 , a high-efficiency photovoltaic cell panel, comprising a transparent conductive glass substrate 1, a back contact electrode 2 is provided on the transparent conductive glass substrate 1, a transparent conductive layer 3 is provided on the back contact electrode 2, the transparent conductive layer 3 is a fluorine-doped tin oxide thin film, the thickness of the transparent conductive layer 3 is 120-200nm, which can improve the photoelectric conversion efficiency and performance of the photovoltaic cell panel, and the thickness thereof is limited, which can improve the overall stability of the photovoltaic cell panel, a light absorption layer 4 is provided on the transparent conductive layer 3, a charge transport layer 5 is deposited on the light absorption layer 4, a back electrode layer 6 is provided on the charge transport layer 5, the back electrode layer 6 is a gold electrode, the thickness of the back electrode layer 6 is 100-200nm, which improves the conductive performance, a buffer layer 7, a window layer 8 and an anti-reflection layer 9 are sequentially provided on the back electrode layer 6, and a front contact electrode 10 is provided on the anti-reflection layer 9;

[0022] Reference Figure 1-Figure 2The charge transport layer 5 includes an electron transport layer 501 and a hole transport layer 502. The electron transport layer 501 is deposited on the light absorption layer 4. The thickness of the light absorption layer 4 is 300-500nm. The particle size of the titanium dioxide nanoparticles on the electron transport layer 501 is 20-30nm, and the thickness of the titanium dioxide nanoparticles is 50-150nm, which can avoid unnecessary waste of materials and reduce the amount used. At the same time, more precise usage can improve the overall efficiency of the photovoltaic panel. The hole transport layer 502 is deposited on the electron transport layer 501. The thickness of the hole transport layer 502 is 100-200nm. The limitation of the thickness of the hole transport layer 502 can avoid material waste on the one hand, and on the other hand, it can avoid the hole transport layer 502 being too thin or too thick, which is not conducive to the stability of the photovoltaic panel. In a fixed operation, the hole transport layer 502 is arranged below the back electrode layer 6, the transparent conductive layer 3 is deposited on the back contact electrode 2 by magnetron sputtering, the light absorption layer 4 is prepared on the transparent conductive layer 3 by a solution method, and the back electrode layer 6 is prepared on the hole transport layer 502 by vacuum evaporation. The light absorption layer 4 is made of perovskite material, the electron transport layer 501 is made of titanium dioxide nanoparticles, and the hole transport layer 502 is made of spiro-OMeTAD material. The design of the present invention is convenient for effectively improving the light energy conversion efficiency. At the same time, through a reasonable manufacturing process, it effectively guarantees the stability and reliability of the photovoltaic panel, and at the same time reduces the production cost, so that the performance of the photovoltaic panel will not be excessively reduced in harsh environments, greatly extending the service life of the photovoltaic panel.

[0023] In the present invention, a new type of perovskite material is used as the light absorption layer 4, and a better charge transport layer 5 is formed by combining an electron transport layer 501 prepared by titanium dioxide nanoparticles and a hole transport layer 502 prepared by spiro-OMeTAD material, which can effectively improve the light energy conversion efficiency. At the same time, a transparent conductive layer 3 is deposited by magnetron sputtering, and a light absorption layer 4 of a perovskite material is prepared on the transparent conductive layer 3 by a solution method, and an electron transport layer 501 and a hole transport layer 502 are sequentially deposited on the perovskite light absorption layer 4, and a back electrode layer 6 is prepared on the hole transport layer 502 by vacuum evaporation. At this time, through a reasonable manufacturing process, the stability and reliability of the photovoltaic panel are effectively guaranteed, and the production cost is reduced at the same time, so that the performance of the photovoltaic panel will not be excessively reduced in harsh environments, and the service life of the photovoltaic panel is greatly extended.

[0024] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency photovoltaic cell panel comprising a transparent conductive glass substrate (1), characterized in that: A back contact electrode (2) is provided on the transparent conductive glass substrate (1), a transparent conductive layer (3) is provided on the back contact electrode (2), a light absorption layer (4) is provided on the transparent conductive layer (3), a charge transport layer (5) is deposited on the light absorption layer (4), a back electrode layer (6) is provided on the charge transport layer (5), a buffer layer (7), a window layer (8) and an anti-reflection layer (9) are sequentially provided on the back electrode layer (6), a front contact electrode (10) is provided on the anti-reflection layer (9), the charge transport layer (5) comprises an electron transport layer (501) and a hole transport layer (502), the electron transport layer (501) is deposited on the light absorption layer (4), the hole transport layer (502) is deposited on the electron transport layer (501), the hole transport layer (502) is provided below the back electrode layer (6), and the light absorption layer (4) is made of a perovskite material.

2. The high-efficiency photovoltaic cell panel according to claim 1, characterized in that: The electron transport layer (501) is made of titanium dioxide nanoparticles.

3. The high-efficiency photovoltaic cell panel according to claim 1, characterized in that: The transparent conductive layer (3) is a fluorine-doped tin oxide film, and the thickness of the transparent conductive layer (3) is 120-200 nm.

4. The high-efficiency photovoltaic cell panel according to claim 1, characterized in that: The thickness of the light absorption layer (4) is 300-500 nm, the particle size of the titanium dioxide nanoparticles on the electron transport layer (501) is 20-30 nm, and the thickness of the titanium dioxide nanoparticles is 50-150 nm.

5. The high-efficiency photovoltaic cell panel according to claim 1, characterized in that: The thickness of the hole transport layer (502) is 100-200 nm.

6. The high-efficiency photovoltaic cell panel according to claim 1, characterized in that: The back electrode layer (6) is a gold electrode, and the thickness of the back electrode layer (6) is 100-200 nm.

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