Method for preparing three-band-gap chromium-doped copper-zinc-tin-sulfur solar cell thin film material through electro-deposition method

A solar cell, copper-zinc-tin-sulfur technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as Cr-doped CZTS triple-bandgap thin-film solar cell materials, etc., and achieve controllable film composition and surface The appearance is dense and flat, and the effect of avoiding adverse effects

Active Publication Date: 2021-07-30
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

M.Green estimated that the upper limit of the theoretical conversion efficiency of this battery is 86.8% when the band gap number tends to infinity
However, there is no experimental report on the preparation of Cr-doped CZTS triple-bandgap thin-film solar cell materials by electrodeposition.

Method used

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  • Method for preparing three-band-gap chromium-doped copper-zinc-tin-sulfur solar cell thin film material through electro-deposition method
  • Method for preparing three-band-gap chromium-doped copper-zinc-tin-sulfur solar cell thin film material through electro-deposition method
  • Method for preparing three-band-gap chromium-doped copper-zinc-tin-sulfur solar cell thin film material through electro-deposition method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing triple-bandgap chromium-doped copper-zinc-tin-sulfur solar cell thin film materials by electrodeposition, comprising the following steps:

[0037] (1) Use acetone, ethanol and deionized water successively to ultrasonically clean the Mo conductive glass for 15 minutes, and then put the Mo conductive glass in a drying oven for 30 minutes at 80°C in vacuum;

[0038] (2) Add copper chloride, tin chloride and lithium chloride of 0.01mol / L, 0.02mol / L, 0.1mol / L successively in 40ml dehydrated alcohol, adopt single cell electrolyzer, with step (1) The cleaned Mo glass substrate was used as the working electrode, the platinum wire was used as the counter electrode, and the saturated calomel was used as the reference electrode. It was deposited at a constant potential of -1.2V for 30 minutes, and the temperature of the electrodeposition solution was 25°C;

[0039] (3) Add zinc chloride, tin chloride and chromium chloride of 0.04mol / L, 0.01mol / L, 0.004mol / L ...

Embodiment 2

[0051] A method for preparing triple-bandgap chromium-doped copper-zinc-tin-sulfur solar cell thin film materials by electrodeposition, comprising the following steps:

[0052] (1) Use acetone, ethanol and deionized water successively to ultrasonically clean the Mo conductive glass for 15 minutes, and then put the Mo conductive glass in a drying oven for 30 minutes at 80°C in vacuum;

[0053] (2) Add copper chloride, tin chloride and lithium chloride of 0.02mol / L, 0.03mol / L, 0.1mol / L successively in 40ml dehydrated alcohol, adopt single cell electrolyzer, with step (1) The cleaned Mo glass substrate was used as the working electrode, the platinum wire was used as the counter electrode, and the saturated calomel was used as the reference electrode. It was deposited at a constant potential of -1.15V for 30 minutes, and the temperature of the electrodeposition solution was 25°C;

[0054] (3) Add zinc chloride, tin chloride and chromium chloride of 0.04mol / L, 0.01mol / L, 0.004mol / L...

Embodiment 3

[0057] A method for preparing triple-bandgap chromium-doped copper-zinc-tin-sulfur solar cell thin film materials by electrodeposition, comprising the following steps:

[0058](1) Use acetone, ethanol and deionized water successively to ultrasonically clean the Mo conductive glass for 15 minutes, and then put the Mo conductive glass in a drying oven for 30 minutes at 80°C in vacuum;

[0059] (2) Add 0.025mol / L, 0.035mol / L, 0.1mol / L cupric chloride, tin chloride and lithium chloride successively in 40ml dehydrated alcohol, adopt single cell electrolyzer, with step (1) The cleaned Mo glass substrate was used as the working electrode, the platinum wire was used as the counter electrode, and the saturated calomel was used as the reference electrode. It was deposited at a constant potential of -1.15V for 30 minutes, and the temperature of the electrodeposition solution was 25°C;

[0060] (3) Add zinc chloride, tin chloride and chromium chloride of 0.04mol / L, 0.01mol / L, 0.004mol / L s...

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Abstract

The invention discloses a method for preparing a three-band-gap chromium-doped copper-zinc-tin-sulfur solar cell thin film material through an electro-deposition method. The method comprises the steps: dissolving copper chloride, tin chloride and lithium chloride in ethanol liquid, a Cu-Sn alloy layer is electrically deposited on a substrate; dissolving chromium chloride, zinc chloride and tin chloride in ethanol liquid, and depositing a Cr-Zn-Sn alloy film on a Cu-Sn alloy film; enabling the deposited double-layer alloy film to be subjected to vulcanization annealing treatment; and finally preparing the chromium-doped copper-zinc-tin-sulfur film material. The preparation process is simple, the utilization rate of raw materials is high, the product cost is low, the controllability is high, the repeatability is good, and preparation and large-scale production of large-area and high-quality films are easy to realize; the obtained material is good in crystallinity and compact and flat in surface appearance, the chromium element forms an impurity energy band in a forbidden band of the copper-zinc-tin-sulfur crystal material through a displacement element zinc, the absorption solar spectrum is widened, and the photo-generated current of a device can be greatly increased.

Description

technical field [0001] The invention relates to a preparation method of a multi-band-gap solar cell absorbing layer material, in particular to a preparation method of an electrodeposited triple-gap chromium-doped copper-zinc-tin-sulfur thin film material for a solar cell. Background technique [0002] As the foundation of the national economy, the energy industry provides an important guarantee for the sustainable development of the social economy and people's healthy life. The depletion of fossil energy and the damage to the ecological environment make it urgent to study various renewable and environmentally friendly energy sources. Solar energy is favored by people because of its renewable, pollution-free, and large reserves. At present, a total of 136 countries in the world have invested in the upsurge of popularizing and applying solar cells. Among them, 95 countries are conducting research and development of solar cells on a large scale. Such as Japan's "Sunshine Pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/032H01L31/0392C25D5/10C25D5/50C25D3/56
CPCH01L31/18H01L31/0327H01L31/0392C25D5/10C25D5/50C25D3/56Y02P70/50Y02E10/50
Inventor 杨穗周鹏易捷钟建新
Owner XIANGTAN UNIV
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