Method for preparing copper zinc tin sulfur selenium nano particles

A copper, zinc, tin, sulfur, selenium, and nanoparticle technology, which is applied in chemical instruments and methods, selenium/tellurium compounds, inorganic chemistry, etc., can solve problems such as harsh reaction conditions, and achieve the effect of simple equipment requirements

Inactive Publication Date: 2010-09-15
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Found through literature search to prior art, R.Nitsche etc. published "Crystal growth of quaternary Cu" in "Journal of Crystal Growth" (crystal growth) 1967 volume 1 phase 1 No. 52~53 pages 2 ZnSnS 4 Chalcogenides by iodine vapor transport" (single crystal Cu 2 ZnSnS 4 ), professionals have developed sputtering, thermal evaporation and other CZTSSe preparation methods, but these methods require a vacuum environment, the reaction conditions are harsh, and it is difficult to produce in a large area at low temperature and low cost

Method used

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  • Method for preparing copper zinc tin sulfur selenium nano particles
  • Method for preparing copper zinc tin sulfur selenium nano particles
  • Method for preparing copper zinc tin sulfur selenium nano particles

Examples

Experimental program
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Embodiment 1

[0029] Add 0.23mmol zinc acetylacetonate, 0.23mmol tin dichloride, 0.5mmol copper acetylacetonate, into the reaction tube, add 4.4mmol oleylamine, heat to 100°C; add 0.03mmol sulfur powder, 2.85mmol selenium powder into the reaction tube, add 10mmol Oleylamine, heated to 200°C. The mixed solution of sulfur and selenium was injected into the metal salt solution, and the temperature was raised to 300° C. for 1 hour. Dissolve the obtained product in ethanol, centrifuge at 8000rpm for 10 minutes, remove the lower layer of precipitate, add chloroform, centrifuge at 7000rpm for 5 minutes, take the supernatant, add 0.1ml oleylamine and 2.5ml ethanol, centrifuge at 8000rpm for 10 minutes, then take the lower layer Precipitate, obtain copper zinc tin sulfur selenide nanoparticle after evaporating solvent, the diameter of copper zinc tin sulfur selenium nanoparticle is 5nm, the X-ray diffraction figure of final product is as follows figure 1 .

Embodiment 2

[0031] Add 0.3mmol of zinc sulfate, 0.3mmol of tin acetate, and 0.5mmol of copper cyanide into the reaction tube, add 40mmol of oleylamine, and heat to 200°C; add 0.87mmol of sulfur powder and 0.0088mmol of selenium powder into the reaction tube, add 4mmol of oleylamine, and heat to 300°C. The mixed solution of sulfur and selenium was injected into the metal salt solution, and the temperature was raised to 300°C for 24 hours. Dissolve the obtained product in 3.8ml of ethylene glycol, centrifuge at 8000rpm for 10 minutes, take the lower precipitate, add 2.5ml of tetrachloroethylene, centrifuge at 7000rpm for 5 minutes, take the supernatant, add 0.1ml of oleylamine and 2.5ml of ethylene glycol Alcohol, under 8000rpm centrifugation 10min, take off the lower layer precipitation, evaporate to dryness and obtain copper zinc tin sulfur selenium nanoparticle, the diameter of copper zinc tin sulfur selenium nanoparticle is 50nm, the X-ray diffraction figure of final product, as figur...

Embodiment 3

[0033] Add 0.25mmol of zinc acetate, 0.25mmol of tin bromide acetylacetonate, and 0.5mmol of cuprous chloride into the reaction tube, add 5mmol of oleylamine and 5mmol of octadecene, and heat to 250°C; add 0.5mmol of sulfur powder and 0.5mmol of selenium powder into the reaction tube tube, add 10 mmol oleylamine, and heat to 150 °C. The mixed solution of sulfur and selenium was injected into the metal salt solution, and the temperature was raised to 400° C. for 10 hours. Dissolve the obtained product in 2.85ml of n-butanol, centrifuge at 8000rpm for 10 minutes, take the lower layer of precipitate, add 2.5ml of trichlorethylene, centrifuge at 7000rpm for 5 minutes, take the supernatant, add 0.1ml of oleylamine and 2.5ml of n-butyl Alcohol, centrifuge 10 cuprous chloride under 8000rpm and take off the lower layer precipitation, after evaporating solvent, obtain copper zinc tin sulfur selenide nanoparticle, the diameter of described copper zinc tin sulfur selenium nanoparticle is...

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Abstract

The invention relates to a method for preparing copper zinc tin sulfur selenium nano particles, which belongs to the technical field of photoelectric materials. The method comprises the following steps of: 1, mixing divalent zinc salt, divalent tin salt and monovalent or divalent copper salt, adding surfactant into the mixture, and heating the mixture; 2, mixing sulfur powder with selenium powder, adding the surfactant into the mixture, and heating the mixture; and 3, injecting solution obtained by the step 2 into solution obtained by the step 1 for warming, and purifying a product to prepare the copper zinc tin sulfur selenium nano particles. The preparation method has the advantages of no pollution, mild and simple reaction condition and low cost, and is suitable for large-scale production. The forbidden band width of the copper zinc tin sulfur selenium nano particles can change with the proportion change of sulfur selenium.

Description

technical field [0001] The invention relates to a preparation method in the technical field of photoelectric materials, in particular to a preparation method of copper-zinc-tin-sulfur-selenium nanoparticles. Background technique [0002] Copper Zinc Tin Sulfur Selenium (Cu 2 ZnSnS x Se 4-x , 0<x<4, the English abbreviation is CZTSSe) the bandgap width is very close to the optimal bandgap width (1.5eV) required by semiconductor solar cells, and has a large absorption coefficient (up to 10 4 cm -1 ). At the same time, CZTSSe also has the property of adjustable bandgap. Theoretical calculations show that the change of the ratio of sulfur to selenium can lead to regular changes in the bandgap. In addition, this series of materials uses zinc and tin elements with high content in the earth's crust to replace copper indium gallium sulfide selenide (Cu 2 InGaS x Se 4-x , the English abbreviation is CIGSSe), the In element in, non-toxic, environmentally friendly, has be...

Claims

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Application Information

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IPC IPC(8): C01B19/00
Inventor 魏浩张亚非苏言杰陶焘
Owner SHANGHAI JIAO TONG UNIV
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