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A kind of preparation method of solar cell precursor mo/cu/sn/zn multilayer film

A technology for solar cells and precursors is applied in the field of preparation of Mo/Cu/Sn/Zn multilayer films of solar cell precursors, which can solve the problems of unfriendly system and complicated preparation, and achieve environmental protection of deposition system, simple process and morphology. controllable effect

Inactive Publication Date: 2016-06-08
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a solar cell copper-zinc-tin-sulfur compound precursor Mo / Cu / Sn / Zn multilayer film in order to solve the above-mentioned technical problems such as complicated preparation and unfriendly system. The process is simple, the system is environmentally friendly, and the shape of the film layer is controllable, etc.

Method used

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  • A kind of preparation method of solar cell precursor mo/cu/sn/zn multilayer film
  • A kind of preparation method of solar cell precursor mo/cu/sn/zn multilayer film
  • A kind of preparation method of solar cell precursor mo/cu/sn/zn multilayer film

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Embodiment 1

[0044] A method for preparing a solar cell precursor Mo / Cu / Sn / Z multilayer film, comprising the steps of:

[0045] (1) Grind and polish four 1cm×1cm Mo sheets and make four Mo electrodes;

[0046] (2) Preparation of Mo / Cu thin film

[0047] A three-electrode system was used, with the platinum electrode as the counter electrode, the calomel electrode as the reference electrode, and the four Mo electrodes obtained in step (1) as the working electrodes, and the copper sulfate and trisodium citrate were prepared in an electrochemical workstation. In the aqueous solution, control the constant potential deposition of -0.6V for 400s, and obtain 4 Mo / Cu thin films with Cu film thicknesses of 250nm;

[0048] In the aqueous solution prepared by the above-mentioned copper sulfate and trisodium citrate, the molar concentrations of copper sulfate and trisodium citrate are respectively 0.1mol / L and 0.2mol / L;

[0049] (3) Preparation of Mo / Cu / Sn thin films

[0050] Using a three-electrode...

Embodiment 2

[0058] A kind of preparation method of solar cell precursor Mo / Cu / Sn / Zn multilayer film, comprises the steps:

[0059] (1) Grind and polish 5 pieces of 1cm×1cm Mo sheets and make 5 pieces of Mo electrodes;

[0060] (2) Preparation of Mo / Cu thin film

[0061] A three-electrode system is adopted, with the platinum electrode as the counter electrode, the calomel electrode as the reference electrode, and the 5 Mo electrodes obtained in step (1) as the working electrodes, using an electrochemical workstation, in the aqueous solution prepared by copper sulfate and trisodium citrate In the process, the constant potential deposition of -0.6V was controlled for 400s, and 5 Mo / Cu films with a thickness of 250nm were obtained;

[0062] In the aqueous solution prepared by the above-mentioned copper sulfate and trisodium citrate, the molar concentrations of copper sulfate and trisodium citrate are respectively 0.1mol / L and 0.2mol / L;

[0063] (3) Preparation of Mo / Cu / Sn thin films

[006...

Embodiment 3

[0071] A kind of preparation method of solar cell precursor Mo / Cu / Sn / Zn multilayer film, comprises the steps:

[0072] (1) Grind and polish 5 pieces of 1cm×1cm Mo sheets and make 5 pieces of Mo electrodes;

[0073] (2) Preparation of Mo / Cu thin film

[0074] A three-electrode system is adopted, that is, the platinum electrode is used as the counter electrode, the calomel electrode is used as the reference electrode, and the five Mo electrodes obtained in step (1) are used as the working electrode, and the electrochemical workstation is used to prepare copper sulfate and trisodium citrate. In an aqueous solution, under a constant potential of -0.6V, five Mo electrodes were deposited for 400s to obtain five Mo / Cu films with a thickness of 250nm;

[0075] In the aqueous solution prepared by the above-mentioned copper sulfate and trisodium citrate, the molar concentrations of copper sulfate and trisodium citrate are respectively 0.1mol / L and 0.2mol / L;

[0076] (3) Preparation of...

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Abstract

The invention discloses a preparation method of a solar cell precursor Mo / Cu / Sn / Zn multilayer film. The preparation method comprises the steps of firstly, respectively preparing a mixed water solution of copper sulfate and trisodium citrate, a mixed water solution of stannous mono-sulphate and sodium citrate, and a mixed water solution of zinc chloride, potassium chloride and polyethylene glycol; then depositing a Cu film, an Sn film and a Zn film layer by layer on an Mo substrate at a constant potential by using an electrochemical work station and adopting a three-electrode system, namely, a platinum electrode as a counter electrode, a calomel electrode as a reference electrode and an Mo electrode as a working electrode, thereby finally obtaining the solar cell precursor Mo / Cu / Sn / Zn multilayer film. The preparation method of the solar cell precursor Mo / Cu / Sn / Zn multilayer film, disclosed by the invention, has the advantages of low cost in a preparation process, short period, simplicity in operation, and the like; moreover, the size and thickness of grains in each layer are adjustable, and the shape of the grains in each layer is controllable.

Description

technical field [0001] The invention relates to a method for preparing a solar battery precursor Mo / Cu / Sn / Zn multilayer film, and has important applications in the field of solar battery energy. Background technique [0002] Thin-film solar cells have attracted widespread attention in the field of solar cells due to their high absorption coefficient and low price. Compound thin film solar cells represented by CdTe and copper indium gallium tin (CIGS) have an absorption coefficient as high as 10 4 cm -1 ~10 5 cm -1 , The laboratory efficiency has reached 16.7% and 20.1% respectively, and its commercial efficiency has reached 12-13%. It is a good thin film battery, but they are facing serious problems of Cd toxicity, and scarcity of In and Ga resources. In recent years, a new generation of copper-zinc-tin-sulfur (hereinafter referred to as CZTS) or copper-zinc-tin-selenium (hereinafter referred to as CZTSe) thin-film solar cells has attracted widespread attention due to it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/10C25D3/38C25D3/32C25D3/22
Inventor 任平周昊胡寸先郝鑫
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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