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Layer system for thin-film solar cells with sodium indium sulfide buffer layers

A solar cell and layer system technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as deterioration of electrical characteristics of solar cells, and achieve high efficiency.

Active Publication Date: 2018-03-27
(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

However, since the buffer layer also has the task of band-matching the absorber layer to the front electrode, such a high energy band gap interacts with typical absorber materials to lead to a deterioration of the electrical properties of the solar cell.

Method used

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  • Layer system for thin-film solar cells with sodium indium sulfide buffer layers
  • Layer system for thin-film solar cells with sodium indium sulfide buffer layers
  • Layer system for thin-film solar cells with sodium indium sulfide buffer layers

Examples

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Embodiment Construction

[0060] figure 1 A preferred exemplary embodiment of a thin-film solar cell 100 according to the invention with a layer system 1 according to the invention is shown purely schematically in a cross-sectional view. The thin-film solar cell 100 includes a substrate 2 and a back electrode 3 . The layer system 1 according to the invention is arranged on the back electrode 3 . The layer system 1 according to the invention comprises an absorbent layer 4 and a buffer layer 5 . A second buffer layer 6 and a front electrode 7 are arranged on the layer system 1 .

[0061] The substrate 2 here consists, for example, of inorganic glass, wherein likewise other insulating materials can be used which have sufficient strength and which have an inert behavior with respect to the process steps carried out during the production of the thin-film solar cell 100, such as plastics, especially Polymers or metals, especially metal alloys. Depending on the layer thicknesses and the specific material...

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PUM

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Abstract

The invention relates to a layer system for thin-film solar cells comprising an absorber layer for absorbing light and a buffer layer arranged on the absorber layer, said buffer layer comprising NaxIny-x / 3S, where 0.063≤x ≤0.625 and 0.681≤y≤1.50.

Description

technical field [0001] The present invention is in the technical field of producing thin-film solar cells and relates to layer systems for thin-film solar cells and methods for producing such layer systems. Background technique [0002] Photovoltaic layer systems for solar cells that directly convert sunlight into electrical energy are sufficiently known. The term “thin-film solar cell” refers to layer systems having a thickness of only a few micrometers, which require a (carrier) substrate for sufficient mechanical strength. Known substrates include mineral glass, plastics (polymers) or metals, in particular metal alloys, and can be designed as rigid plates or flexible films, depending on the respective layer thickness and specific material properties. [0003] Layer systems for thin-film solar cells are available on the market in different embodiments, depending on the substrate and the applied materials. The materials are chosen such that the incident solar spectrum is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/36H01L21/02
CPCH01L21/02422H01L21/02425H01L21/02485H01L21/02491H01L21/02568Y02E10/541Y02P70/50H01L31/0445H01L31/0336H01L31/0749H01L31/18
Inventor J.帕尔姆S.波尔纳T.哈普R.迪伊特米勒T.达里博S.乔斯特R.维马
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD