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Double-sided light-transmitting cadmium telluride solar cell and preparation method thereof

A solar cell, double-sided technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of light energy utilization rate, photoelectric conversion rate and low power generation of cadmium telluride solar cells, so as to improve the light energy utilization rate , the method is simple, and the effect of increasing the carrier concentration

Inactive Publication Date: 2020-09-22
CHINA TRIUMPH INT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a double-sided light-transmitting cadmium telluride solar cell and its preparation method, which is used to solve the problem that the cadmium telluride solar cell in the prior art can only transmit light on one side. , the light energy utilization rate, photoelectric conversion rate and low power generation of cadmium telluride solar cells

Method used

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  • Double-sided light-transmitting cadmium telluride solar cell and preparation method thereof
  • Double-sided light-transmitting cadmium telluride solar cell and preparation method thereof

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preparation example Construction

[0045] refer to figure 2 , this embodiment also provides a method for preparing a double-sided light-transmitting CdTe solar cell, comprising the following steps:

[0046] Provide FTO transparent conductive glass 1;

[0047] On the surface of the FTO transparent conductive glass 1, a CdS window layer 2 is formed;

[0048] On the surface of the CdS window layer 2, a CdTe absorbing layer 3 is formed;

[0049] On the surface of the CdTe absorption layer 3, an NTO transparent conductive layer 4 is formed by magnetron sputtering;

[0050] On the surface of the NTO transparent conductive layer 4 , a glass cover plate 5 is encapsulated.

[0051] Specifically, the double-sided light-transmitting CdTe solar cell prepared by this method may include the above-mentioned double-sided light-transmitting CdTe solar cell, but is not limited thereto, and the preparation method of the above-mentioned double-sided light-transmitting CdTe solar cell is not limited to limited to this.

[005...

Embodiment 1

[0057] This embodiment is a double-sided light-transmitting CdTe solar cell, such as figure 1 As shown, it includes: FTO transparent conductive glass 1 , CdS window layer 2 , CdTe absorption layer 3 , NTO transparent conductive layer 4 and glass cover plate 5 from bottom to top.

[0058] The preparation process is as follows:

[0059] a) Provide the FTO transparent conductive glass 1 with a thickness of 3.2 mm, clean it with a brush in deionized water, and dry it with an air knife;

[0060] b) On the cleaned upper surface of the FTO transparent conductive glass 1, a CdS window layer 2 with a thickness of 50 nm is deposited at a deposition temperature of 250° C. by a close-space sublimation method, and deposited at a deposition temperature of 500° C. Under the conditions, a 2 μm thick CdTe absorber layer 3 is deposited.

[0061] c) The sample in the operation b) is taken out, and the NTO transparent conductive layer 4 is deposited by using the magnetron sputtering method, and...

Embodiment 2

[0071] This embodiment provides another preparation method of double-sided light-transmitting CdTe solar cells, such as figure 1 As shown, it includes: FTO transparent conductive glass 1 , CdS window layer 2 , CdTe absorption layer 3 , NTO transparent conductive layer 4 and glass cover plate 5 from bottom to top.

[0072] The preparation process is as follows:

[0073] a) Provide the FTO transparent conductive glass 1 with a thickness of 2.5mm, ultrasonically treat it in absolute alcohol for 10min, and dry it with nitrogen;

[0074] b) On the surface of the cleaned FTO transparent conductive glass 1, a 100nm thick CdS window layer 2 is deposited at a deposition temperature of 300° C. by vapor phase transport method, and deposited at a deposition temperature of 400° C. Under the conditions, a 2 μm thick CdTe absorber layer 3 is deposited.

[0075] c) The sample in the operation b) is taken out, and the NTO transparent conductive layer 4 is deposited by using the magnetron spu...

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Abstract

The invention discloses a double-sided light-transmitting cadmium telluride solar cell and a preparation method thereof. Double-sided light transmission of the CdTe solar cell can be realized throughthe FTO transparent conductive glass and the NTO transparent conductive layer, so the light energy utilization rate, the photoelectric conversion rate and the power generation capacity of the CdTe solar cell can be improved; furthermore, after fluorine elements in an FTO transparent conductive layer replace a part of oxygen elements in tin oxide, the n-type semiconductor is formed when the NTO transparent conductive layer is doped, and the p-type semiconductor is formed after the nitrogen element in the NTO transparent conductive layer replaces part of the oxygen element in the tin oxide, so the corresponding carrier concentration can be increased by doping the tin oxide, and the conductivity of the tin oxide is further improved; the NTO transparent conductive layer is prepared by adoptinga magnetron sputtering method, the method is simple, and the method can be realized only by simply modifying the existing equipment for producing the metal electrode, so the method has relatively strong applicability.

Description

technical field [0001] The invention relates to a cadmium telluride solar cell, in particular to a double-sided light-transmitting cadmium telluride solar cell and a preparation method thereof. Background technique [0002] Cadmium telluride (CdTe) solar cells have the advantages of convenient production, light weight, low manufacturing cost and excellent photoelectric performance, and have attracted extensive attention from scientific research institutions and enterprises, and CdTe solar cells in many countries have begun to move from the laboratory research stage to Large-scale industrial production. The theoretical photoelectric conversion efficiency of CdTe solar cells is as high as 28%, and the highest photoelectric conversion efficiency of the currently known CdTe solar cells is 22%. Therefore, CdTe solar cells still have a broad space for development. [0003] CdTe solar cell is a solar cell based on the heterojunction of p-type cadmium telluride (CdTe) and n-type ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/0296H01L31/073H01L31/18
CPCH01L31/022466H01L31/0296H01L31/073H01L31/1828Y02E10/543Y02P70/50
Inventor 彭寿王伟魏晓俊周文彩齐帅于浩曾红杰李一哲张纲张正
Owner CHINA TRIUMPH INT ENG
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