Preparation method of wurtzite structure CZTS (Se) system powder

A wurtzite and powder technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as inability to intervene, high requirements for reaction equipment, and difficulty in controlling the composition of target products.

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

AI Technical Summary

Problems solved by technology

Usually, the preparation of wurtzite structure CZTS(Se) powder needs to use salt as raw material, and it can be carried out in a closed liquid phase environment at a relatively high temperature for a long time. The required conditions for this preparation method Strict, high requirements on reaction equipment, poor flexibility, can not intervene in the middle process of reaction, and the preparation process of salt substances as raw materials is easy to introduce impurities, and the composition of the target product is not easy to control

Method used

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  • Preparation method of wurtzite structure CZTS (Se) system powder
  • Preparation method of wurtzite structure CZTS (Se) system powder
  • Preparation method of wurtzite structure CZTS (Se) system powder

Examples

Experimental program
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Embodiment 1

[0021] Embodiment 1 (Cu 2 ZnSnS 4 ):

[0022] (1) take by weighing 0.64 gram Cu powder respectively according to molar ratio 2: 1: 1: 4, 0.327 gram Zn powder, 0.593 gram Sn powder, 0.64 gram S powder is that raw material is dissolved in 10ml ethanol and 60ml ethylenediamine mixed solvent, After ultrasonic dispersion for 1 hour, stir mechanically, heat to 85°C, and keep warm for 6 hours;

[0023] (2) The product obtained in step (1) is centrifuged and washed 3 times with distilled water and ethanol to obtain an intermediate product;

[0024] (3) Dissolve the intermediate product obtained in step (2) in 10 ml of distilled water and 40 ml of acetic acid mixed solvent, stir mechanically, heat to 85° C., and keep warm for 1 hour;

[0025] (4) The product prepared in the step (3) was centrifugally washed with distilled water and ethanol for 3 times, and the product after centrifugal washing was vacuum-dried in a vacuum drying oven at 80° C. for 8 hours. The sample was analyzed b...

Embodiment 2

[0026] Embodiment 2 (Cu 2 ZnSnS 2 Se 2 ):

[0027] (1) Take by weighing 0.64 gram of Cu powder according to the molar ratio of 2: 1: 1: 2: 2, 0.327 gram of Zn powder, 0.593 gram of Sn powder, 0.32 gram of S powder, and 0.789 gram of Se powder as raw materials dissolved in 50 ml of ethylene glycol and In 50ml of ethylenediamine mixed solvent, ultrasonically disperse for 1 hour, then mechanically stir, heat to 150°C, and keep warm for 1 hour;

[0028] (2) The product obtained in step (1) is centrifuged and washed 3 times with distilled water and ethanol to obtain an intermediate product;

[0029] (3) Dissolve the intermediate product obtained in step (2) in a mixed solvent of 50ml ethylene glycol and 50ml acetic acid, stir mechanically, heat to 130°C, and keep warm for 6 hours;

[0030] (4) The product prepared in the step (3) was centrifugally washed with distilled water and ethanol for 3 times, and the product after centrifugal washing was vacuum-dried in a vacuum drying o...

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Abstract

The invention discloses a preparation method of wurtzite structure CZTS (Se) system powder. The method comprises the steps of allowing elemental Cu powder, Zn powder, Sn powder and S (Se) powder to dissolve in an amine, a mixed solvent of distilled water and an amine or a mixed solvent of an amine and an alcohol, carrying out dispersing through ultrasonic, carrying out heating to a rated temperature, reacting for a rated time to obtain a corresponding intermediate product, allowing the intermediate product to dissolvean organic acid, a mixed solvent of an organic acid and distilled water or a mixed solvent of an alcohol andan organic acid, heating to a rated temperature, reacting for a rated time, and carrying out centrifugal vacuum drying to obtain wurtzite structure CZTS (Se) system powder. The method provided by the invention has the advantages of high activity of synthesized powder, rapid synthesis, simple required equipment pure productand so on, and can flexibly control the entire reaction preparation process so as to form specific structure and specific phase.

Description

technical field [0001] The invention relates to a preparation method of a wurtzite structure CZTS(Se) system powder, and the prepared wurtzite structure CZTS(Se) system powder can be used for the production and preparation of a CZTS(Se) system film or block. Background technique [0002] The wurtzite structure CZTS(Se) powder has higher chemical activity than the cubic sphalerite structure CZTS(Se) powder, and the powder can be used in the preparation of CZTS(Se) series thin films and bulk materials . Usually, the preparation of wurtzite structure CZTS(Se) powder needs to use salt as raw material, and it can be carried out in a closed liquid phase environment at a relatively high temperature for a long time. The required conditions for this preparation method Strict, high requirements on reaction equipment, poor flexibility, can not intervene in the middle process of the reaction, and the preparation process of salt substances as raw materials is easy to introduce impuritie...

Claims

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Application Information

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