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A method for preparing solar cell absorbing layer material CZTS/CZTSSE by water bath lamination

A technology for solar cells and absorbing layers, applied in the direction of sustainable manufacturing/processing, circuits, photovoltaic power generation, etc., can solve problems such as hard to obtain, long-term cycle, etc., achieve simple preparation process, simple and uncomplicated preparation equipment, and low preparation cost Effect

Active Publication Date: 2016-07-13
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regarding the problem that the ZnS film in this patent needs a long period of time to be prepared by the continuous ionic layer adsorption reaction method, there is a patent (application number 201210030399.9) that proposes a method for preparing a ZnS film using a simpler chemical water bath, but also uses the continuous ionic layer adsorption reaction (Cu, Sn)S composite films were prepared by the method and the reason was explained as: the chemical bath process is difficult to obtain (Cu, Sn)S composite films
However, the preparation of (Cu, Sn)S composite films by the same ion layer requires a long period of time, so this patent focuses on this problem, and further research will use a water bath method to prepare laminated films, such as: glass / SnS / Cu / ZnS, the precursor film is prepared more quickly and simply, and then heat-treated in a sulfur or selenium atmosphere to obtain a high-quality CZTSSe film with uniform large area and bandgap matching

Method used

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  • A method for preparing solar cell absorbing layer material CZTS/CZTSSE by water bath lamination
  • A method for preparing solar cell absorbing layer material CZTS/CZTSSE by water bath lamination
  • A method for preparing solar cell absorbing layer material CZTS/CZTSSE by water bath lamination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: Preparation based on CZTS film

[0051] 1) Clean the molybdenum-coated glass substrate first: immerse the substrate in ethanol and ammonia solution in sequence, then deionized water and ultrasonically rinse it, and dry it with nitrogen.

[0052] 2) On the surface of the clean molybdenum substrate obtained in step 1), a layer of SnS film is deposited in a chemical water bath; the molybdenum substrate is vertically placed in a 30ml vial, and the deposition solution is configured; 1g of analytically pure tin protochloride (SnCl 2 2H 2 O) add 5ml absolute ethanol to dissolve, then add 3ml28% ammoniacal liquor, add 12ml50% triethanolamine after 30s as complexing agent and the 1M thioacetamide of 8ml (C 2 h 5 NS) as a sulfur source, the concentration of tin protochloride in the deposition solution is 0.044M, the volume fraction of triethanolamine is 6%, the concentration of thioacetamide is 0.08M, and the pH is adjusted to 13 by alkaline solution, and finally ...

Embodiment 2

[0056] Example 2: Based on the preparation of CZTSSe thin film, the preparation of the precursor film is consistent with that of Example 1

[0057] 1) Clean the molybdenum-coated glass substrate first: immerse the substrate in ethanol and ammonia solution in sequence, then deionized water and ultrasonically rinse it, and dry it with nitrogen.

[0058] 2) On the surface of the clean molybdenum substrate obtained in step 1), a layer of SnS film is deposited in a chemical water bath; the molybdenum substrate is vertically placed in a 30ml vial, and the deposition solution is configured; 1g of analytically pure tin protochloride (SnCl 2 2H 2 O) add 5ml absolute ethanol to dissolve, then add 3ml28% ammoniacal liquor, add 12ml50% triethanolamine after 30s as complexing agent and the 1M thioacetamide of 8ml (C 2 h 5 NS) as a sulfur source, the concentration of tin protochloride in the deposition solution is 0.044M, the volume fraction of triethanolamine is 6%, the concentration of ...

Embodiment 3

[0062] Embodiment 3: the embodiment carried out based on the soda silicate glass substrate in the optional substrate

[0063] 1) Clean the soda-silicate glass substrate first: immerse the substrate in ethanol and deionized water in sequence for ultrasonication for 10 minutes respectively, rinse with deionized water, and blow dry with nitrogen.

[0064] 2) Deposit a layer of SnS film in a chemical water bath on the surface of the clean soda-silicate glass obtained in step 1); the soda-silicate glass substrate is vertically placed in a 30ml vial, and the deposition solution is configured; 1g of analytically pure stannous chloride (SnCl 2 2H 2 O) add 5ml absolute ethanol to dissolve, then add 3ml28% ammoniacal liquor, add 12ml50% triethanolamine after 30s as complexing agent and the 1M thioacetamide of 8ml (C 2 h 5 NS) as a sulfur source, the concentration of tin protochloride in the deposition solution is 0.044M, the volume fraction of triethanolamine is 6%, the concentration...

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Abstract

The invention relates to a method for manufacturing a material CZTS / CZTSSe of an absorbing layer of a solar cell through a water bath laminate and belongs to the technical field of solar cell materials and devices. The method comprises two specific steps that 1, a chemical water bath method is totally used for depositing a precursor film of a laminate film structure containing sulfide and metallic copper, wherein the sulfide contains zinc and tin; 2, the precursor film is manufactured in a sulfur or selenium atmosphere through a certain process to obtain a CZTS or CZTSSe absorbing layer film. According to the method, only the chemical water bath method is used for manufacturing the precursor film of the laminate film structure containing the sulfide and the metallic copper, wherein the sulfide contains the zinc and the tin; the method has the obvious advantages that the manufacturing process is simple and easy to control, needed equipment is simple and not complex, film components and the thickness are easy to control, the film can be manufactured in a large-area mode, raw materials are rich and can be obtained, and the method has a great application prospect in the field of low-cost film solar cell manufacturing.

Description

technical field [0001] The invention relates to the technical field of solar cell materials and devices, in particular to a preparation method of solar cell absorbing layer material CZTS / CZTSSe. Background technique [0002] At present, fossil fuels are still the main energy source in today's human society, but due to their non-renewability and polluting use, they lead to global problems such as energy crisis, environmental pollution, and global warming. Therefore, we are looking for an environmentally friendly and renewable energy source. is an urgent problem to be solved. Solar energy is a renewable resource with abundant storage. Among them, the birth of photovoltaic cells provides a new solution for human society to use solar energy. [0003] In many solar cell researches, copper zinc tin sulfur selenium (CZTSSe) thin film solar cell is a direct bandgap semiconductor due to its abundant earth reserves of copper, zinc, tin, selenium, and sulfur, and its bandgap width is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/032
CPCH01L31/0326Y02E10/50Y02P70/50
Inventor 李建民刘伟丰江国顺朱长飞
Owner UNIV OF SCI & TECH OF CHINA
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