Chemical treatment method for improving quality of surface layer of copper-indium-gallium-selenium thin film material
A technology of chemical treatment and thin-film materials, applied in the direction of sustainable manufacturing/processing, electrical components, climate sustainability, etc., can solve the problems of insignificant effect and lower solar cell efficiency, and achieve improved surface quality, simple process, and materials low cost effect
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Embodiment 1
[0017] Alcohol treatment solution 15 is prepared by deionized water and absolute ethanol in a certain ratio (about 12:1), stirred in a glass container to fully dissolve, and the glass substrate is coated with Mo (molybdenum) film and Sample 14 of the CIGS film was placed in an alcohol treatment solution such as figure 1 As shown, take it out after soaking for 5 min, and heat-treat the sample at 30°C-50°C for 30s-60s to obtain the heat-treated sample 18, as shown in figure 2 As shown, the chemical treatment solution 17 of deionized water, ammonia water and zinc sulfate is prepared in a glass container according to a certain concentration ratio, the concentration of ammonia water in the prepared chemical treatment solution is 3mol / L, and the concentration of zinc sulfate is adjusted at 0~1×10 -2 mol / L, and the concentration of zinc sulfate is not 0. The heat-treated sample 18 is soaked in the chemical treatment solution 17, and the chemical treatment solution 17 is heat...
Embodiment 2
[0024] Alcohol treatment solution 15 is prepared by deionized water and absolute ethanol in a certain ratio (about 12:1), stir to make it fully dissolved, put the sample 14 coated with Mo film and CIGS film on the glass substrate into alcohol Soak in the treatment solution 15 for 5 minutes, take it out and heat-treat it at 40°C for 40 seconds; prepare a chemical treatment solution 17 of deionized water, ammonia water and zinc acetate in a glass container according to a certain concentration ratio, and the concentration of ammonia water in the prepared chemical treatment solution is 3mol / L, adjust the concentration of zinc acetate at 0~1×10 -2 mol / L, and the concentration of zinc acetate is not 0. Soak the heat-treated sample 18 in the chemical treatment solution 17, take out the sample after soaking for 8 minutes, and dry the residual solution on the surface of the sample with dry nitrogen to complete the chemical treatment of the surface quality of the CIGS film mat...
Embodiment 3
[0027] Alcohol treatment solution 15 is prepared by deionized water and absolute ethanol in a certain ratio (about 10:1), stir to make it fully dissolved, put the sample 14 coated with Mo film and CIGS film on the glass substrate into alcohol Soak in the treatment solution for 6 minutes, take it out and heat-treat at 40°C for 40 seconds; prepare a chemical treatment solution 17 of deionized water, ammonia water and zinc sulfate in a glass container according to a certain concentration ratio, and the concentration of ammonia water in the prepared chemical treatment solution is 3mol / L, adjust the concentration of zinc sulfate at 0~1×10 -2 mol / L, and the concentration of zinc sulfate is not 0. The heat-treated sample 18 was soaked in the chemical treatment solution, and the chemical treatment solution was heated to 80° C. (the optimum reaction temperature). After soaking for 8 minutes, the sample was taken out, and the residual solution on the surface of the sample was blown dr...
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