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Cadmium telluride (CdTe) thin film solar battery

A technology of solar cells and thin films, applied in circuits, electrical components, semiconductor devices, etc., can solve the problems of weak pn junction between CdTe absorbing layer and transparent conductive film, unable to improve photoelectric conversion rate of solar cells, and reduce photoelectric conversion efficiency of solar cells

Active Publication Date: 2013-06-19
ADVANCED SOLAR POWER HANGZHOU
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Problems solved by technology

[0007] However, since the CdS window layer is thin, usually between 50 and 150nm, if there are pinhole defects in the CdS window layer, it will lead to the formation of a weak pn junction between the CdTe absorbing layer and the transparent conductive film.
Therefore, if a transparent conductive film with a textured structure is used, when there are pinhole defects in the CdS window layer, not only the photoelectric conversion efficiency of the solar cell cannot be improved, but the photoelectric conversion efficiency of the solar cell is reduced instead.

Method used

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  • Cadmium telluride (CdTe) thin film solar battery

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Embodiment Construction

[0019] The invention provides a CdTe thin film solar cell, which has higher photoelectric conversion efficiency.

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] Please refer to figure 1 , figure 1 It is a schematic diagram of the structure of a CdTe thin film solar cell in a specific embodiment of the present invention.

[0022] A CdTe thin film solar cell provided in this specific embodiment includes a CdTe absorbing layer 11 , a CdS window layer 12 and a transparent conductive film 13 .

[002...

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Abstract

The invention discloses a cadmium telluride (CdTe) thin film solar battery which comprises a CdTe absorbing layer, a CdS window layer and a transparent electricity conducting film. A high-resistance buffer layer is arranged between the CdS window layer and the transparent electricity conducting film in a composite mode. A suede structure is arranged on one face, combined with the high-resistance buffer layer, of the transparent electricity conducting film. The CdTe thin film solar battery has high photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to the technical field of new energy, and more specifically relates to a CdTe thin-film solar cell. Background technique [0002] As traditional energy resources are gradually exhausted and environmental problems are intensifying year by year, new energy has gradually become the mainstream of energy strategies in various countries, among which the photovoltaic industry occupies an important position in new energy. Solar cells use semiconductor materials as the medium to realize the direct conversion of light and electricity. When sunlight hits the solar cells, the solar light energy is directly converted into electrical energy without mechanical transmission and polluting by-products. [0003] The world's photovoltaic industry is rapidly rising at an average annual growth rate of 40%, but the core issue for the large-scale commercial application of solar cells is to improve the photoelectric conversion efficiency of the cells. Am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0296H01L31/0224
Inventor 张晓岚籍龙占吴历清汤顺伟吴选之
Owner ADVANCED SOLAR POWER HANGZHOU
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