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Method for rapidly preparing copper-zinc-tin-sulfur nanoparticles

A copper-zinc-tin-sulfur, nanoparticle technology, applied in nanotechnology, chemical instruments and methods, tin compounds, etc., can solve the problems of long time and complex process, and achieve the effect of short reaction time, simple equipment and low cost

Inactive Publication Date: 2017-02-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Literature Journal of Materials Chemistry, 2012, 22(15):7502-7506. Use hydrothermal method to control phase selection by adjusting the ratio of ethylenediamine to water and changing different annealing temperatures; Literature Chemistry AnAsian Journal, 2014, 9(8) :2309–2316. Use the hot injection method to select the phase by controlling the annealing temperature and organic solvent mixing; the above method realizes the phase selection by changing the annealing temperature or changing the solvent ratio, the process is more complicated and takes a long time

Method used

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  • Method for rapidly preparing copper-zinc-tin-sulfur nanoparticles
  • Method for rapidly preparing copper-zinc-tin-sulfur nanoparticles
  • Method for rapidly preparing copper-zinc-tin-sulfur nanoparticles

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Embodiment 1

[0029] This embodiment provides a method for rapidly preparing copper-zinc-tin-sulfur nanoparticles, which specifically includes the following steps:

[0030] (1) 1.6 mmol copper chloride dihydrate (CuCl 2 • 2H 2 O), 1.5 mmol acetic acid dihydrate (Zn(CH 3 COO) 2 • 2H 2 O), 1.25 mmol tin chloride dihydrate (SnCl 2 • 2H 2 O), 6 mmol thiourea (CS(NH 2 ) 2 ) was dissolved in a beaker containing a mixed solution of 6 mL ethylene glycol and 60 mL triethylenetetramine, adding a stirring magnet, stirring with a magnetic stirrer and an ultrasonic cleaner in turn, the magnetic stirring speed was 800 rpm, and the ultrasonic treatment frequency was 40 KHz, ultrasonic 10min, make the solution fully mixed to obtain a clear solution;

[0031] (2) Add 0.5g of surfactant polyethylene glycol to the precursor obtained in step (1), mix evenly and set aside;

[0032] (3) Put the solution obtained in step (2) into a microwave oven, and set the reaction system parameters as follows: the mi...

Embodiment 2

[0037] This embodiment provides a method for rapidly preparing copper-zinc-tin-sulfur nanoparticles, which specifically includes the following steps:

[0038] (1) 2 mmol copper nitrate hydrate (Cu(NO 3 ) 2 •2.5H 2 O), 1.25 mmol zinc nitrate (Zn(NO 3 ) 2 •6H 2 O), 1mmol tin acetate (C 4 h 6 o 4 Sn), 6 mmol sodium sulfide (Na 2 S•9H 2 O) Dissolve in a beaker containing a mixed solution of 6 mL of ethylene glycol and 24 mL of triethylenetetramine, add a stirring magnet, stir with a magnetic stirrer and an ultrasonic cleaner in sequence, the magnetic stirring speed is 600 rpm, and the ultrasonic treatment frequency is 40 KHz, ultrasonic 5min, so that the solution is fully mixed to obtain a clear solution;

[0039] (2) Add 1g of surfactant polyvinylpyrrolidone to the above precursor obtained in step (1), mix evenly and set aside;

[0040] (3) Put the solution obtained in step (2) into a microwave oven, and set the reaction system parameters as follows: the microwave powe...

Embodiment 3

[0046] This embodiment provides a method for rapidly preparing copper-zinc-tin-sulfur nanoparticles, which specifically includes the following steps:

[0047] (1) 2mmol copper acetylacetonate (Cu(acac) 2 ), 1 mmol zinc chloride (Zn(Cl) 2 ), 1 mM diacetylacetonate tin chloride (Sn(acac) 2 Cl 2 ), 5mmol thioacetamide (C 2 h 5 NS) was dissolved in a beaker containing a mixed solution of 18 mL ethylene glycol and 24 mL triethylenetetramine, adding a stirring magnet, stirring with a magnetic stirrer and an ultrasonic cleaner in sequence, the magnetic stirring speed was 500 rpm, and the ultrasonic treatment frequency was 40 KHz, ultrasonic 20min, make the solution fully mixed to obtain a clear solution;

[0048] (2) Add a mixture of surfactants 0.026g polyethylene glycol and 0.026g ethanolamine to the precursor obtained in step (1), mix evenly and set aside;

[0049] (3) Put the solution obtained in step (2) into a microwave oven, and set the reaction system parameters as foll...

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Abstract

The invention discloses a method for rapidly preparing copper-zinc-tin-sulfur nanoparticles and belongs to the technical field of solar cell materials and devices. The method comprises the following steps of: mixing a copper source, a zinc source, a tin source and a sulfur source into an organic solvent, adding a surfactant, performing microwave heating in a microwave oven, and synthesizing copper-zinc-tin-sulfur Cu2ZnSnS4 nanoparticles. The copper-zinc-tin-sulfur nanoparticles prepared by the invention are high in reaction speed, the raw materials are rich in source, non-toxic and low in price, the repeatability is high, the reaction device is simple, the reaction process is controllable, the product is pure, and the material phase can be conveniently and rapidly controlled by changing the reaction time.

Description

technical field [0001] The present invention relates to a kind of rapid preparation copper zinc tin sulfur (Cu 2 ZnSnS 4 ) The nanoparticle method belongs to the technical field of solar cell materials and devices. Background technique [0002] copper zinc tin sulfur copper 2 ZnSnS 4 (CZTS) As a direct bandgap semiconductor, it is suitable for solar cells and other optical materials. CZTS is a semiconductor material with a similar structure to CIGS. Although the conversion efficiency of CIGS thin-film solar cells reaches 20.3%, its raw materials In and Ga are Scarce elements are expensive. In addition, Se is both a rare and toxic element. It is restricted by the scarcity of elements when facing large-scale production. CZTS has the advantages of non-toxicity and environmental protection. It is an ideal semiconductor material for the absorber layer of solar cells. [0003] The common structures of copper-zinc-tin-sulfur include kesterite, swotzite and wurtzite. The diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00B82Y40/00H01L31/054
CPCH01L31/054C01G19/006C01P2004/03C01P2002/72C01P2002/80C01P2006/80C01P2004/62Y02E10/52
Inventor 沈韬柴鲜花朱艳甘国友青红梅
Owner KUNMING UNIV OF SCI & TECH
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