Preparation method for synthesizing super-long wurtzite structure Cu2ZnSnS4 nanorod in one step through solvothermal method

A solvothermal method and wurtzite technology, applied in chemical instruments and methods, tin compounds, inorganic chemistry, etc., can solve the problems of complicated operation, high cost, and increased operating coefficient of the film, and achieve simple preparation method and high synthesis temperature Low, excellent crystallinity effect

Inactive Publication Date: 2015-12-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, the preparation of Cu 2 ZnSnS 4 There are many thin film methods, such as vacuum magnetron sputtering, thermal evaporation, co-evaporation, spray pyrolysis, spin coating, thermal injection, etc. However, these methods still have many disadvantages: physical methods require High vacuum, complicated operation, and high cost; chemical methods require anhydrous and oxygen-free (inert gas protection), and harsh conditions such as the use of toxic reagents such as hydrazine, which increase the operating coefficient and cost of preparing thin films

Method used

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  • Preparation method for synthesizing super-long wurtzite structure Cu2ZnSnS4 nanorod in one step through solvothermal method
  • Preparation method for synthesizing super-long wurtzite structure Cu2ZnSnS4 nanorod in one step through solvothermal method
  • Preparation method for synthesizing super-long wurtzite structure Cu2ZnSnS4 nanorod in one step through solvothermal method

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Experimental program
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Effect test

Embodiment 1

[0015] Weigh the reactant precursor 1mmol CuCl in the laboratory purification room 2 2H 2 O,0.5mmolZnCl 2 ,0.5mmolSnCl 4 ·5H 2 O,3.52mmolC 3 h 7 NO 2 Dissolve S in a mixed solution of 17ml ethylene glycol and 3ml oleylamine, add 0.1g oxalic acid and 0.05g hexadecyltrimethylammonium bromide, and then use magnetic stirring at room temperature until the solution is completely dissolved. Transfer to a 50 ml stainless steel autoclave lined with polytetrafluoroethylene and mix for three minutes. Afterwards, the reaction kettle was placed in a constant temperature heating box, reacted at 180° C. for 24 hours, cooled naturally to room temperature, and toluene and alcohol were added to the cooled reactant to cause the nanoparticles to settle. Then centrifuge at a speed of 80,000 rpm for 4 minutes, pour the suspension into a waste liquid bottle, and collect the lower sediment, which is the superlong wurtzite structure Cu 2 ZnSnS 4 Nano stave. After cleaning several times, put ...

Embodiment 2

[0017] Weigh the reactant precursor 1mmol CuCl in the laboratory purification room 2 2H 2 O,0.48mmolZnCl 2 ,0.48mmolSnCl 4 ·5H 2 O,3.5mmolC 3 h 7 NO 2 Dissolve S in a mixed solution of 17ml ethylene glycol and 3ml oleylamine, add 0.1g oxalic acid and 0.05g hexadecyltrimethylammonium bromide, and then use magnetic stirring at room temperature until the solution is completely dissolved. Transfer to a 50 ml stainless steel autoclave lined with polytetrafluoroethylene and mix for three minutes. Afterwards, the reaction kettle was placed in a constant temperature heating box, reacted at 180° C. for 24 hours, cooled naturally to room temperature, and toluene and alcohol were added to the cooled reactant to cause the nanoparticles to settle. Then centrifuge at a speed of 80,000 rpm for 4 minutes, pour the suspension into a waste liquid bottle, and collect the lower sediment, which is the superlong wurtzite structure Cu 2 ZnSnS 4 Nano stave. After cleaning several times, put...

Embodiment 3

[0019] Weigh the reactant precursor 1mmol CuCl in the laboratory purification room 2 2H 2 O,0.52mmolZnCl 2 ,0.52mmolSnCl 4 ·5H 2 O,3.54mmolC 3 h 7 NO 2Dissolve S in a mixed solution of 17ml ethylene glycol and 3ml oleylamine, add 0.1g oxalic acid and 0.05g hexadecyltrimethylammonium bromide, and then use magnetic stirring at room temperature until the solution is completely dissolved. Transfer to a 50 ml stainless steel autoclave lined with polytetrafluoroethylene and mix for three minutes. Afterwards, the reaction kettle was placed in a constant temperature heating box, reacted at 180° C. for 24 hours, cooled naturally to room temperature, and toluene and alcohol were added to the cooled reactant to cause the nanoparticles to settle. Then centrifuge at a speed of 80,000 rpm for 4 minutes, pour the suspension into a waste liquid bottle, and collect the lower sediment, which is the superlong wurtzite structure Cu 2 ZnSnS 4 Nano stave. After cleaning several times, put...

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Abstract

The invention discloses a preparation method for synthesizing a super-long wurtzite Cu2ZnSnS4 nanorod in one step through a solvothermal method. The preparation method is used for the technical field of photovoltaic cell materials. The method includes the steps that reactant precursors, namely, copper chloride dihydrate, zinc chloride, stannic chloride pentahydrate and L-cysteine, ethylene glycol, oleylamine, oxalic acid and hexadecyl trimethyl ammonium bromide are added to an autoclave, the reaction temperature is raised to a certain temperature, the thermostatic reaction is conducted for a period of time, then, a heating device is taken out, so that the reactants are cooled, methylbenzene and ethyl alcohol are added to the cooled reactants, and then nano particles are precipitated; then centrifugation is conducted for a certain time at a certain rotating speed, the upper-layer solution is poured out, the lower-layer precipitate is collected, centrifugation is repeated multiple times till the solution is clear, precipitate is collected, and finally the high-quality super-long wurtzite Cu2ZnSnS4 nanorod is obtained. The preparation method has the advantages that preparation is simple, the super-long wurtzite Cu2ZnSnS4 nanorod can be synthesized in one step, the synthesis temperature is low, the adopted precursor materials are low in cost, crystallinity is excellent, and the preparation method is suitable for batch synthesis.

Description

technical field [0001] The invention relates to a solvothermal method for one-step synthesis of ultra-long wurtzite structure Cu 2 ZnSnS 4 Preparation method of nanorods, that is, a kind of I 2 -II-IV-VI 4 A method for preparing semiconductor nanocrystals. It belongs to the technical field of photovoltaic cell materials. Background technique [0002] With the rapid growth of world energy demand, increasingly serious supply and demand and environmental problems have become the bottleneck restricting economic and social development, it is necessary to establish a clean, sufficient, economical, safe and sustainable energy system. Solar energy has become one of the most potential new energy sources because of its continuous irradiation to the ground, and its cleanness and no pollution. In recent years, solar cell technology has made great progress, and various research work on solar cells has been highly valued. Both developed countries and developing countries have formula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00
CPCC01G19/006C01P2002/30C01P2002/72C01P2002/84C01P2004/03C01P2004/16
Inventor 曹萌张庆高王升王林军沈悦
Owner SHANGHAI UNIV
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