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Method for preparing CZTS (Copper Zinc Tin Sulfide) (Se) series nanometer powder by low-temperature mechanical alloying

A mechanical alloying, nano-powder technology, applied in chemical instruments and methods, inorganic chemistry, nanotechnology, etc., can solve the problems of unsuitable industrial scale production, harsh synthesis conditions, and low product yield, etc. The effect of morphology control, simple operation and reduction of reaction energy consumption

Inactive Publication Date: 2012-08-22
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the above-mentioned materials need to be obtained through chemical synthesis using salts as raw materials through solvothermal synthesis, and the synthesis conditions are relatively harsh. The reaction rate is slow and the steps are cumbersome. The rate is not high, so it is not suitable for industrial scale production

Method used

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  • Method for preparing CZTS (Copper Zinc Tin Sulfide) (Se) series nanometer powder by low-temperature mechanical alloying
  • Method for preparing CZTS (Copper Zinc Tin Sulfide) (Se) series nanometer powder by low-temperature mechanical alloying
  • Method for preparing CZTS (Copper Zinc Tin Sulfide) (Se) series nanometer powder by low-temperature mechanical alloying

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Effect test

Embodiment 1

[0020] Embodiment 1 (Cu 2 ZnSnS 4 ):

[0021] (1) Take elemental Cu powder, Zn powder, Sn powder, and S powder as raw materials, weigh 2.56 grams of Cu powder, 1.3 grams of Zn powder, 2.37 grams of Sn powder, and 2.56 grams of S powder in a molar ratio of 2:1:1:4 , take by weighing 527 grams of grinding balls according to the mass ratio of the grinding balls and the weighed raw materials being 60:1, and measure 25 mL of process control agent (20 mL of absolute ethanol+5 mL of analytically pure ethylenediamine) with a graduated cylinder;

[0022] (2) Add the raw materials weighed in step (1), balls and process control agent together into a grinding tank with a volume of 500mL, feed argon as a protective gas, seal the grinding tank, and transfer the grinding tank to a planetary ball mill, The set speed is 300 rpm, and the ball milling time is 72 hours;

[0023] (3) The product obtained in step (2) was centrifugally washed with distilled water and absolute ethanol for 3 times,...

Embodiment 2

[0025] Embodiment 2 (Cu 2 ZnSnS 2 Se 2 ):

[0026] (1) Take elemental Cu powder, Zn powder, Sn powder, S powder, and Se powder as raw materials, weigh 2.56 grams of Cu powder, 1.3 grams of Zn powder, and 2.37 grams of Sn powder in a molar ratio of 2:1:1:2:2 , 1.28 grams of S powder, 3.158 grams of Se powder, weigh 214 grams of grinding balls according to the mass ratio of the grinding balls and the weighed raw materials to 20:1, measure 100 mL of process control agent (75 mL of absolute ethanol+25 mL of analytical pure Ethylenediamine);

[0027] (2) Add the raw materials weighed in step (1), balls and process control agent together into a grinding tank with a volume of 500mL, feed argon as a protective gas, seal the grinding tank, and transfer the grinding tank to a planetary ball mill, The set speed is 600 rpm, and the ball milling time is 12 hours;

[0028] (3) The product obtained in step (2) was centrifugally washed with distilled water and absolute ethanol for 3 time...

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Abstract

The invention discloses a method for preparing CZTS (Copper Zinc Tin Sulfide) (Se) series nanometer powder by low-temperature mechanical alloying. Elementary substances Cu powder, Zn powder, Sn powder and S (Se) powder are added into a ball-milling tank according to a certain mole ratio, an alcohol and amine mixed liquor is used as a process control agent, ball milling is carried out according to a rated ratio of grinding media to material, a set rotational speed and ball milling time, and a ball-milled product is centrifugally washed and dried to obtain a target product. In the raw materials, elementary substances sulfur powder and selenium powder can be exchanged in any mole ratio; and the process control agent is the mixed liquor of alcohol and amine with the volume ratio of 1-20:1, the alcohol is one of ethanol, ethylene glycol, normal butanol, isobutanol, isoamylol, tertiary amyl alcohol and glycerol, and the amine is one of ethanediamine, iso-butylamine, diisopropylamine, hexamethylenediamine and triethylamine. The method disclosed by the invention has the advantages of easy obtainment of raw materials, pure products, low energy consumption, easy control in product shape and appearance, simple process and the like, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for preparing CZTS(Se) nanopowder by low-temperature mechanical alloying. The prepared CZTS(Se)nanopowder can be used to prepare CZTS(Se) bulk material, film material and related materials. Semiconductor materials such as solar cell absorber layers, photoelectric sensor devices, etc. technical background [0002] The CZTS(Se) nanopowder can be used to prepare CZTS(Se) bulk material or thin film solar cell absorbing layer. Usually, the above-mentioned materials need to be obtained through chemical synthesis using salts as raw materials through solvothermal synthesis, and the synthesis conditions are relatively harsh. The reaction rate is slow and the steps are cumbersome. The rate is not high, so it is not suitable for industrial scale production. Contents of the invention [0003] The object of the present invention is to provide a method for preparing CZTS(Se) nanometer powder by low-temperature mechanical alloyin...

Claims

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Application Information

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IPC IPC(8): C01B19/00C01G19/00B82Y40/00
Inventor 龙飞郑国源池上森莫淑一邹正光
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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