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Preparation method of amorphous state CIGS (Copper Indium Gallium Selenide) nano powder body based on ball-milling process

A nano-powder, amorphous technology, applied in the field of metal powder processing, can solve the problems of difficult large-scale production, high cost, complex preparation of CIGS nano-precursor powder, etc., and achieve the effect of stable process and economical preparation method

Active Publication Date: 2015-01-28
浙江尚越新能源开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the current CIGS nano-precursor powder is complicated to prepare, the cost is high and it is difficult to realize large-scale production, the present invention proposes a preparation method of amorphous CIGS nano-powder based on the ball milling process, which has simple procedures and good stability , component controllable, suitable for large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The first step is planetary ball milling, mixing 25g copper selenide (CuSe) and 25g indium selenide (InSe) into a powder to be ground, 300g zirconia grinding beads with a particle size of 10 mm, and grinding liquid (100ml of anhydrous ethanol) and grinding aids (1g sodium hexametaphosphate, 0.3g glycerol), add them to a ball mill tank made of aluminum oxide, fill it with nitrogen for protection, put the seal ring and close the tank Cover and seal, put the sealed ball mill jar into the jar seat of the planetary ball mill and fix it, start the planetary ball mill, and grind at 500 rpm for 10 hours to obtain a primary milled powder with a particle size of less than 500 microns.

[0021] The second step is high-energy ball milling: weigh 20g of the first grinding powder obtained in the first grinding, 100g of zirconia beads with a particle size of 0.5 mm, grinding fluid (30ml of absolute ethanol) and grinding aid (0.2 g sodium hexametaphosphate) was mixed and added to a ball m...

Embodiment 2

[0023] The first step is planetary ball milling. 20g copper selenide (CuSe) powder to be ground, 300g zirconia grinding beads with a particle size of 10 mm, grinding fluid (100ml absolute ethanol) and grinding aids ( 0.3g PEG200, 0.2g glycerol) were mixed and added to a ball mill pot made of aluminum oxide. After placing the sealing ring, close the lid and seal, and put the sealed ball mill pot into the tank seat of the planetary ball mill. Fixed, start the planetary ball mill, and grind at 500 rpm for 6 hours to obtain a primary ground powder with a particle size of less than 500 microns.

[0024] The second step is high-energy ball milling: Weigh 10g of primary ground powder, 100g of zirconia beads with a particle size of 0.5 mm, grinding fluid (10ml of methyl ethyl ketone) and grinding aid (0.15g PEG200) and add three In a ball mill made of aluminum oxide, 0.5 hour is used as an effective grinding time, and intermittent grinding is used, that is, grinding at 1,400 rpm for 1 ho...

Embodiment 3

[0026] The first step is planetary ball milling. 5g gallium selenide (GaSe) powder to be ground, 300g zirconia grinding beads with a particle size of 10 mm, grinding fluid (50ml absolute ethanol) and grinding aids ( 0.05g PEG400, 0.05g glycerol) are mixed and added to a ball mill pot made of aluminum oxide, filled with nitrogen for protection, put the sealing ring, close the lid and seal, and put the sealed ball mill pot into the planet Fix the tank seat of the ball mill, start the planetary ball mill, and grind at 500 rpm for 4 hours to obtain 5 g of primary ground powder with a particle size of less than 500 microns. Then take another 5g of gallium selenide (GaSe) powder to be ground and grind according to the above steps to obtain 5g of the primary ground powder with a particle size of less than 500 microns.

[0027] The second step is high-energy ball milling: take 10g of the primary powder obtained in the previous step, 100g of zirconia beads with a particle size of 0.5 mm, ...

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Abstract

The invention discloses a preparation method of an amorphous state CIGS (Copper Indium Gallium Selenide) nano powder body based on a ball-milling process. The preparation method comprises the following steps of: adding a powder body to be milled, milling beads, grinding liquid and a grinding assistant in a planetary ball-milling tank after mixing, sealing a tank base in which the planetary ball-milling tank is loaded, and fixing, grinding for 2-10h at a rotating speed of 250 turns / min to 500 turns / min to obtain a preliminarily-ground powder body; and adding the preliminarily-ground powder body, the milling beads, the grinding liquid and the grinding assistant in a high-energy shimmy ball-milling tank after mixing, and arranging on a high-energy shimmy ball-milling machine, grinding for 0.5-4h by adopting a batch type grinding mode, namely, a rotating speed of 1000 turns / min to 1500 turns / min, and then cooling for 0.5-1h, repeatedly carrying out the step for 2-8 times to obtain the CIGS nano powder body with the particle size less than 1 micrometer. The particle size of the CIGS nano powder body prepared by adopting the preparation method is hundreds of nanometers and smaller in particle size distribution, and can be applied to the preparation of a non-vacuum process CIGS film cell absorbing layer. The preparation method adopts a wet process ball milling mode, is more economic, and is more stable in process; and the related apparatus is more common in use.

Description

Technical field [0001] The invention relates to the technical field of metal powder processing, in particular to a method for preparing amorphous CIGS nano powder based on a ball milling process. Background technique [0002] Copper indium gallium selenide (CIGS) thin-film solar cells have become a hot spot in the current industry and research institutions for their high conversion efficiency, good low light performance, stable performance, and low cost. In the context of its excellent performance and huge demand, many photovoltaic companies and institutions around the world have invested huge amounts of financial and manpower to develop and produce them, including the National Renewable Energy Laboratory (NREL), Solar Frontier, Miasole , Global solar, Wurth Solar, etc. In 2011, the global production capacity of CIGS reached the GW level, showing a good development trend. [0003] At present, the preparation process of CIGS thin film batteries can be divided into two types: vacuu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C17/08B02C17/14
Inventor 任宇航罗派峰来冠华盛伟明
Owner 浙江尚越新能源开发有限公司