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A composition-controllable copper-zinc-tin thin film material, a copper-zinc-tin-sulfur-based solar cell, and a preparation method for both

A thin-film material, copper-zinc-tin technology, applied in the direction of sustainable manufacturing/processing, circuits, electrical components, etc., can solve the problems of good crystallinity, low solution stability, and large reduction potential gap, etc., to achieve improved photoelectric performance, The product is stable and efficient, and the effect of reducing time

Active Publication Date: 2017-01-18
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large difference in the reduction potential of the three metals of copper, zinc and tin, it is difficult to obtain a suitable ratio of copper, zinc, tin and sulfur thin films, and the three metal salts are mixed together, and the solution stability is not high.
Compared with the two methods, the film prepared by the step-by-step method has good composition control but poor crystallinity, while the co-deposition composition is not well controlled but good crystallinity; therefore, they cannot meet the preparation and use requirements of copper-zinc-tin-sulfur thin films.

Method used

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  • A composition-controllable copper-zinc-tin thin film material, a copper-zinc-tin-sulfur-based solar cell, and a preparation method for both
  • A composition-controllable copper-zinc-tin thin film material, a copper-zinc-tin-sulfur-based solar cell, and a preparation method for both
  • A composition-controllable copper-zinc-tin thin film material, a copper-zinc-tin-sulfur-based solar cell, and a preparation method for both

Examples

Experimental program
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Effect test

preparation example Construction

[0047] A kind of preparation method of copper-zinc-tin film material of the present invention, it comprises the steps:

[0048] 1) The copper-zinc-tin thin film material contains at least three main metal elements of copper, zinc and tin; the electroplating solution contains any two of the three main metal elements; the additive solution contains the third main metal element that is missing in the electroplating solution element;

[0049] 2) There is at least one conductive electrode in the electroplating solution as the first electrode, and the film substrate to be plated is used as the second electrode; the film substrate to be plated is a conductive substrate or a substrate covered with a conductive film;

[0050] 3) When energizing between the first electrode and the second electrode, add the additive solution at a controlled rate, that is, start to simultaneously deposit three metal films containing copper, zinc and tin, and obtain a substrate on which a copper-zinc-tin m...

example 1

[0059] A kind of preparation method of copper-zinc-tin film material of the present invention, the steps are as follows:

[0060] Configure zinc-tin binary metal mixed solution as electrolyte: 0.07M zinc sulfate, 0.05M tin sulfate, sodium citrate complexing agent, pH 3. Configure the third metal salt solution as the additive solution: 0.4M copper sulfate and sodium citrate as complexing agent. The substrate as the second electrode is connected to the conductive electrode as the first electrode and placed in the electrolytic solution, and the potential of the second electrode is negative relative to the first electrode. Add the additive solution at a controlled rate, the addition amount is 15ml / min, start depositing copper, zinc, and tin at the same time with a fixed potential to form a metal film, the potential is -1.7V, and the deposition time is 10min. The substrate of the zinc-tin metal film, that is, the material of the copper-zinc-tin film.

example 2

[0062] A kind of preparation method of copper-zinc-tin film material of the present invention, the steps are as follows:

[0063] Prepare copper-zinc binary metal mixed solution: 0.08M zinc sulfate, 0.01M copper sulfate, sodium citrate complexing agent, pH 6. Configure the third metal salt solution as the additive solution: 0.3M tin sulfate and sodium citrate as complexing agent. The substrate as the second electrode is connected to the conductive electrode as the first electrode and placed in the electrolytic solution, and the potential of the second electrode is negative relative to the first electrode. Add the additive solution at a controlled rate, the addition amount is 10ml / min, start depositing copper, zinc, and tin at the same time with a fixed potential to form a metal film, the potential is -1.7V, and the deposition time is 7min. After the electroplating is completed, copper is deposited on the surface The substrate of the zinc-tin metal film, that is, the material ...

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Abstract

The invention discloses a preparation method of a copper-zinc-tin film material. The preparation method comprises the following steps: (1) the copper-zinc-tin film material comprises at least three main metal elements of copper, zinc and tin; electroplate liquid contains any two main metal elements; and additive solution contains a third main metal element; (2) at least one conducting electrode serves as a first electrode in the electroplate liquid; and a film substrate to be plated serves as a second electrode; (3) when electricity is conducted between the first electrode and the second electrode, and the speed is controlled to add the additive solution, that is, films containing three metals of copper, zinc and tin are synchronously deposited to obtain a substrate deposited with the copper-zinc-tin metal film on the surface; and the copper-zinc-tin film material is obtained. In the preparation method of a copper-zinc-tin sulfenyl solar battery, a cadmium sulfide buffer layer, a ZnO film and an ITO film or an AZO film are deposited on the copper-zinc-tin film material in sequence to obtain the copper-zinc-tin sulfenyl solar battery after the step (4).

Description

technical field [0001] The invention relates to a thin-film solar cell in the field of photoelectric materials and new energy technologies, in particular to a composition-controllable copper-zinc-tin thin-film material, a copper-zinc-tin-sulfur-based solar cell and a preparation method for both. Background technique [0002] With the reduction of non-renewable energy reserves such as fossil fuels, sustainable and clean renewable energy sources, such as solar energy, wind energy, biomass energy, tidal energy, etc., have received extensive attention. In particular, solar energy, as an inexhaustible, non-polluting new energy source, has become the fastest growing and most eye-catching field, and is an effective means to solve the current world energy crisis. Photovoltaic power generation is an important means of utilizing solar energy, so there are more and more researches on solar cells. [0003] At present, solar cells are mainly made of monocrystalline silicon and polycryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D21/14H01L31/0224H01L31/18
CPCY02P70/50
Inventor 刘生忠党文萍
Owner SHAANXI NORMAL UNIV
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