A high-efficiency cadmium telluride thin film solar cell

A solar cell, cadmium telluride technology, applied in circuits, electrical components, photovoltaic power generation and other directions, can solve the problem of low transmittance of incident light, and achieve simple process, high light transmittance and power added value, and low cost. Effect

Pending Publication Date: 2018-12-18
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the incident light transmittance of transparent conductive film (TCO) glass in cadmium telluride (CdTe) thin film solar cells is not high (generally not more than 90%), and to provide a high-efficiency cadmium telluride thin film Solar battery

Method used

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  • A high-efficiency cadmium telluride thin film solar cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A cadmium telluride thin-film solar cell includes a glass substrate 1, a cadmium telluride thin-film power generation layer 2, and an anti-reflection and anti-reflection film 3. The anti-reflection and anti-reflection film 3 is a silicon oxide film prepared by a sol-gel method with a refractive index of 1.15. The thickness is 200nm; through the battery power test, the power generation efficiency of the cadmium telluride thin film solar cell increased by 3.5% compared with the previous one after coating the anti-reflection and anti-reflection film 3.

Embodiment 2

[0019] A cadmium telluride thin-film solar cell includes a glass substrate 1, a cadmium telluride thin-film power generation layer 2, and an anti-reflection and anti-reflection film 3. The anti-reflection and anti-reflection film 3 is a magnesium fluoride film prepared by evaporation, with a refractive index of 1.27. The thickness is 125nm; after the battery power test, the power generation efficiency of the cadmium telluride thin film solar cell increased by 3.6% compared with the previous one after coating the anti-reflection and anti-reflection film 3.

Embodiment 3

[0021] A cadmium telluride thin-film solar cell includes a glass substrate 1, a cadmium telluride thin-film power generation layer 2, and an anti-reflection and anti-reflection film 3. The anti-reflection and anti-reflection film 3 is a titanium oxide film prepared by magnetron sputtering, with a refractive index of 1.5 , with a thickness of 45nm; through the battery power test, the power generation efficiency of the cadmium telluride thin-film solar cell increased by 3.2% compared with the previous one after coating the anti-reflection and anti-reflection film 3.

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Abstract

The invention relates to a high-efficiency cadmium telluride thin film solar cell, comprising an existing cadmium telluride thin film solar cell substrate glass (1) and a cadmium telluride thin film power generation layer (2). The invention is characterized in that: a layer of antireflection and antireflection film (3) is prepared on the back surface of the cadmium telluride thin film solar cell substrate glass (1); The material of the antireflection and antireflection film (3) is silicon oxide, magnesium fluoride and titanium oxide, and the film refractive index of the antireflection and antireflection film (3) is 1.1 to 1.5 and the thickness is 45 to 200nm; The anti-reflection and anti-reflection film (3) can be prepared by sol-gel method. Gel, vapor deposition, magnetron sputtering, chemical vapor deposition, acid etching. The invention has the advantages that the power generation efficiency of the cadmium telluride thin film battery module prepared by the technology of the invention can be increased by more than 3%; The process is simple and the cost is low. The transmittance and power added value are high.

Description

technical field [0001] The invention belongs to the field of green new energy and relates to the field of solar cells, in particular to a high-efficiency cadmium telluride thin-film solar cell. Background technique [0002] Compared with crystalline silicon solar cells, thin-film solar cells consume less material, and only need a thickness of tens of nanometers to hundreds of microns to realize photoelectric conversion. Cadmium telluride (CdTe) thin-film solar cells occupy an important position in thin-film solar cells because of its low cost and easy large-area realization, while transparent conductive film (TCO) glass has the advantages of high electrical conductivity and its own textured structure , are widely used in thin film solar cells. However, the transparent conductive film (TCO) glass transmittance currently used is not high (generally not more than 90%), resulting in a large part of the light energy not being rationally utilized. Therefore, it is very important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216H01L31/0392
CPCH01L31/0216H01L31/0392Y02E10/50
Inventor 马立云金良茂汤永康甘治平王东李刚鲍田苏文静
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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