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Method for preparing ink capable of being used for preparing Cu2ZnSnS4 solar cell absorption layer film

A technology of solar cells and preparation methods, which is applied in the field of preparation of functional materials, can solve problems such as poor stability, poor safety, and restrictions on large-scale industrialization, and achieve the effect of simple process and low cost

Inactive Publication Date: 2014-07-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process uses toxic and poor safety hydrazine as a solvent, and its stability in air is poor, so it cannot be applied on a large scale
The existence of these problems makes them have certain limitations in large-scale industrialization

Method used

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  • Method for preparing ink capable of being used for preparing Cu2ZnSnS4 solar cell absorption layer film

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Embodiment Construction

[0011] According to Cu:(Zn+Sn):S molar ratio 0.8:1:3, Zn:Sn molar ratio 1.2:1. First, dissolve copper chloride, zinc chloride, and tin chloride into 3ml dimethyl sulfoxide respectively, then mix the above three solutions together, then add the amount of dimethyl sulfoxide to 10ml, and fully Stir for 5 minutes, then add thioacetamide, stir fully at room temperature for 30 minutes, after it is completely dissolved, add ethanolamine solution drop by drop, stop adding when the color of the solution turns black, and the obtained black solution is the preparation ink.

[0012] The substantive features and remarkable advantages of the present invention will be further clarified below in conjunction with the accompanying drawings and specific embodiments, and the present invention is by no means limited to the stated embodiments.

[0013] 1). Weigh 1.0224g cupric chloride, 0.5571g zinc chloride, 0.7699g tin chloride.

[0014] 2). Take 3 vials and pour 3ml of dimethyl sulfoxide into ...

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Abstract

The invention discloses a method for preparing ink capable of being used for preparing a Cu2ZnSnS4 solar cell absorption layer film. The ink is prepared from dimethyl sulfoxide as a solvent, and contains four elements, namely copper, zinc, tin and sulphur. The preparation method of the ink comprises the following steps: firstly, respectively dissolving copper chloride, zinc chloride and stannic chloride with certain ratio into dimethyl sulfoxide; mixing the three solutions together and adding a certain amount of thioacetamide; finally dropwise adding ethanolamine to the solution; stopping dropwise adding when the solution becomes black to finally prepare stable ink. The prepared ink disclosed by the invention is stable, does not need expensive raw materials, and can be used for preparing the Cu2ZnSnS4 solar cell absorption layer film, a new idea is provided for development of the technology of a green and environment-friendly Cu2ZnSnS4 film solar cell with low cost and high conversion efficiency, and rapid development of the Cu2ZnSnS4 film solar cell industry can be promoted.

Description

technical field [0001] The present invention relates to a kind of can be used for preparing Cu 2 ZnSnS 4 The invention relates to a method for preparing ink of solar cell absorbing layer film, which belongs to the technical field of preparation of functional materials. Background technique [0002] At present, solar energy industrialization is dominated by monocrystalline silicon solar cells, amorphous silicon solar cells and copper indium gallium selenide (CuIndium gallium selenide) 1-x Ga x Se 2 , referred to as CIGS) thin-film solar cells. However, the cost of crystalline silicon solar cells is high, which is restricted in the promotion; the inherent metastable state and multi-defect characteristics of amorphous silicon thin-film solar cells lead to low cell stability and serious photo-induced efficiency degradation effects, which are large It is difficult to further improve the area photoelectric conversion efficiency; CIGS uses two low-abundance elements In (0.049p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00
Inventor 汪浩王先明刘晶冰严辉朱满康王波
Owner BEIJING UNIV OF TECH
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