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chemical wet process method

A wet process and chemical technology, applied in the field of process, can solve the problems of polluting the environment, unable to recycle and reuse, unable to reduce production costs, etc., and achieve the effect of reducing the change of pH value

Active Publication Date: 2018-03-02
太阳能有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, after the chemical liquid is directly heated, the pH value of the chemical liquid will change, making it impossible to recycle and reuse. In this way, it will not only pollute the environment, but also fail to reduce production costs

Method used

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0057] Such as figure 1 As shown, the present invention provides a chemical wet process method. The method of the present invention includes: a step of providing a chemical solution S101, a step of providing a substrate S103, and a heating step S105, and preferably also includes a cleaning and rinsing step S107 and a drying Step S109.

[0058] Such as figure 2 Shown is a schematic diagram of a process tool 100 using the method of the present invention. The processing equipment 100 includes: a reaction tank 1 , a roll-to-roll conveying device 3 and a plurality of heating units 4 , and preferably also includes a cleaning device 5 and a drying device 6 . The processing equipment ...

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Abstract

The invention discloses a chemical wet process method. The chemical wet process method comprises providing a chemical medical liquid, providing a substrate equipped with a reaction face and a heating face opposite to the reaction face, enabling the reaction face to contact the chemical medical liquid, and heating the heating face so that temperature of the reaction face rises by means of heat conduction and chemical wet process reactions are performed between the reaction face and the chemical medical liquid. Whereby a PH value change of the chemical medical liquid after being heated can be greatly reduced, and the chemical medical liquid can be recycled, and then effects of reduction of environment pollutions and cost are achieved.

Description

technical field [0001] The present invention relates to a process method, in particular to a chemical wet process method. Background technique [0002] Among many solar cells, solar cells made of copper indium gallium diselenide (CIGS for short) are widely favored due to their high photoelectric conversion efficiency and low cost. [0003] The difference between CIGS solar cells and amorphous silicon solar cells is that there is a buffer layer (buffer layer) between the photoelectric layer and the conductive glass, which has a buffering effect and helps electrons to conduct effectively. Wherein, the CIGS solar cell includes a back electrode, a main absorption layer, a buffer layer, a transparent conductive layer and a front electrode. The main absorber layer, also known as the CIGS absorber layer, is the most critical unit in the overall CIGS solar cell and has a decisive impact on the conversion efficiency. The buffer layer is usually cadmium sulfide (CdS) to form a PN ju...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/032
CPCH01L31/0326H01L31/1876Y02P70/50
Inventor 王春雅陈立凯蓝受龙陈家达
Owner 太阳能有限责任公司