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Thin-film solar cell and manufacturing method thereof

A technology of thin-film solar cells and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., to achieve the effects of wide source of raw materials, simple structure and process, and easy large-scale production and application

Inactive Publication Date: 2010-09-22
SHENZHEN DANBANG INVESTMENT GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current CZTS solar cells still use CdS as a buffer layer, so they are not really non-toxic.

Method used

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  • Thin-film solar cell and manufacturing method thereof
  • Thin-film solar cell and manufacturing method thereof
  • Thin-film solar cell and manufacturing method thereof

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Embodiment Construction

[0025] Such as figure 1 As shown, the thin film solar cell of the present invention is composed of a glass substrate 1, a back electrode 2, a light absorbing layer 3, a buffer layer 4, a window layer 5, and a top electrode 6 from bottom to top.

[0026] The back electrode of the battery is a molybdenum film with a thickness of 0.3-3 μm; the light absorbing layer is a copper-zinc-tin-sulfur (CZTS) film with a thickness of 0.5-5 μm; the buffer layer is a zinc sulfide (ZnS) film , its thickness is 20~100nm; The described window layer is zinc aluminum oxide (ZAO) thin film, and its thickness is 0.2~5 μ m; The described top electrode is nickel aluminum alloy thin film, and its thickness is 0.2~5 μ m, wherein aluminum content 1 to 100%.

[0027] The manufacture method of thin-film solar cell of the present invention carries out according to the following steps:

[0028] (1) Manufacturing of the back electrode: Deposit molybdenum film on the substrate surface by direct current magn...

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Abstract

The invention discloses a thin-film solar cell and a manufacturing method thereof. The thin-film solar cell sequentially comprises a glass substrate, a molybdenum back electrode, a copper-zinc- tin-sulfur (Cu2ZnSnS4,CZTS) light absorption layer, a zinc sulfide (ZnS) buffer layer, a zinc-aluminum oxide (ZAO) window layer and a nickel-aluminum top electrode from bottom to top. The invention avoids the use of rare and precious metals and toxic elements, also realizes the vacuum deposition of each layer of thin film of the CZTS thin-film solar cell and simultaneously has the advantages of simple structure and manufacturing process, high photoelectric conversion efficiency, good stability and the like.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic materials and new energy, and relates to the preparation of semiconductor thin films and the structural design of semiconductor thin film devices, in particular to the structural design and manufacture of thin-film solar cells with new low-cost, environmentally friendly copper-zinc-tin-sulfur thin films as the absorbing layer method. Background technique [0002] Solar energy is an inexhaustible and inexhaustible renewable energy source. Among the various utilization methods of solar energy, solar cell power generation is the fastest growing, most dynamic and most eye-catching field, and it is expected to become an effective way to solve the increasingly serious energy crisis and environmental pollution problems. The solar cell industry has entered a stage of rapid development since the second half of the 1990s. The average annual growth rate of solar cells in the last 10 years was 41.3%, ...

Claims

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Application Information

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IPC IPC(8): H01L31/042H01L31/0264H01L31/18
CPCY02E10/50Y02P70/50
Inventor 刘萍
Owner SHENZHEN DANBANG INVESTMENT GROUP
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