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Method for preparing flexible CdTe thin film solar cell

A technology of solar cells and thin films, applied in circuits, electrical components, climate sustainability, etc., can solve the problems of understanding, not being able to fully satisfy integrated and portable power sources, and low mass specific power, and achieve the effect of improving battery efficiency

Inactive Publication Date: 2010-08-04
上海联孚新能源科技集团有限公司
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Problems solved by technology

Crystalline silicon solar cells have the following disadvantages: (1) The smelting and purification of silicon materials adopt high energy-consuming processes, so the cost reduction space of silicon solar cells is limited; (2) Crystalline silicon solar cells can only be made into rigid substrate components such as glass Substrate, mass specific power is low, can not fully meet the needs of building integration and portable power supply
However, people's current understanding of the characteristics and preparation methods of CdTe solar cells is very scattered, and there is no systematic understanding

Method used

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  • Method for preparing flexible CdTe thin film solar cell

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Embodiment Construction

[0031] In order to further illustrate the technical content of this patent, the preparation method of this patent is now described through specific implementation methods:

[0032] (1) Pretreatment of stainless steel substrate 5: use 0.1 cm thick stainless steel as the deposition substrate and back electrode, use acetone to ultrasonically clean for 10 minutes to remove surface grease, and then ultrasonically clean with deionized water for 10 minutes to remove impurities on the stainless steel surface , and finally put the stainless steel into the pretreatment chamber 6 after drying, and use plasma to clean the stainless steel substrate 5 .

[0033] (2) Chemical vapor growth graphite buffer layer 4: the stainless steel substrate 5 is transferred to the chemical vapor deposition furnace 7, and high-purity CH is introduced into the chemical vapor deposition chamber 4 and H 2 , the deposition temperature is 300° C., the deposition pressure is 2000 Pa, and the deposition thickness...

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Abstract

The invention discloses a method for preparing a flexible CdTe thin film solar cell. The solar cell structure consists of stainless steel, a graphite buffer layer, CdTe, CdS, and ITo, wherein the CdS and the CdTe form a PN node. The method is characterized by adopting the following preparation steps: a, pretreating a stainless steel substrate; b, growing the graphite buffer layer by using chemical vapor phase; c, growing a CdTe thin film on the stainless substrate with the prepared graphite buffer layer by using a close-space sublimation method; and annealing the CdTe thin film by using the CdCl2; d, growing a CdS thin film on a substrate with the prepared CdTe thin film by using the close-space sublimation method; e, preparing an In2O3:F transparent conductive film on the stainless substrate; and f, obtaining the flexible CdTe thin film solar cell. The method has the advantages of simple process, streamlined operation and suitability for large-scale factory production.

Description

Technical field: [0001] The invention relates to a method for manufacturing a solar cell based on a flexible CdTe (cadmium telluride) thin film, and belongs to the technical field of nano inorganic compound energy material manufacturing technology. Background technique: [0002] Energy is the basis for the functioning of modern society. With the growth of population and economy in today's world, the increasing scarcity of energy resources, and the deterioration of the environment, people's demand for electric energy is increasing, and at the same time, human society has higher and higher requirements for sustainable energy development. Solar energy is a sustainable and clean energy, and the development and utilization of solar energy has set off an upsurge worldwide. This is very conducive to the sustainable development of the ecological environment and the benefit of future generations, so countries around the world are investing in research and development of solar cells....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 康丽霞赖建明苏青峰张根发
Owner 上海联孚新能源科技集团有限公司
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