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Method for preparing copper indium selenium nano tablets

A nanosheet and copper indium selenide technology, applied in the field of nanomaterials, can solve problems such as agglomeration, irregular shape of copper indium selenide, etc., and achieve the effects of low cost, simple method and high efficiency

Inactive Publication Date: 2012-10-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the above-mentioned deficiencies existing in the prior art, and provides a preparation method of copper indium selenide nanosheets, which solves the ubiquitous selenium source problem and the shape of the obtained copper indium selenium selenium nanomaterials in the prior art Irregular or severe agglomeration and other problems, and the process of the present invention is simple, the production cost is low, and the obtained copper indium selenium nanomaterial can further meet industrial needs

Method used

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  • Method for preparing copper indium selenium nano tablets
  • Method for preparing copper indium selenium nano tablets
  • Method for preparing copper indium selenium nano tablets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] ① Add 2 parts of selenium powder, 10 parts of Vc and 1000 parts of DMF into the polytetrafluoroethylene reactor, then seal the reactor and put it in an oven at 160°C for 6 hours to react The kettle was naturally cooled to room temperature.

[0021] ②Open the reactor and quickly add 1 part of copper acetate, 1 part of indium nitrate and 5 parts of polyvinylpyrrolidone, then seal the reactor, control the temperature at 160°C, and react for 24 hours.

[0022] ③ After the reaction, the reaction kettle was naturally cooled to room temperature, the product was filtered, washed several times with absolute ethanol, and vacuum-dried to obtain copper indium selenide nanomaterials.

[0023] figure 1 It is the transmission electron micrograph and the electron diffraction pattern of the obtained copper indium selenide nanometer material. It can be seen from the figure that this material is CuInSe with pure phase tetragonal chalcopyrite structure. 2 , a single-crystal two-dimensio...

Embodiment 2

[0025] ① Add 50 parts of selenium powder, 200 parts of Vc and 1000 parts of DMF into the polytetrafluoroethylene reaction kettle according to the amount of the substance, then seal the reaction kettle, put it in an oven at 160°C, and keep it for 6 hours before reacting The kettle was naturally cooled to room temperature.

[0026] ②Open the reactor and quickly add 25 parts of copper nitrate, 25 parts of indium chloride and 100 parts of polyvinylpyrrolidone, then seal the reactor, control the temperature at 180°C, and react for 6 hours.

[0027] ③ After the reaction, the reaction kettle was naturally cooled to room temperature, the product was filtered, washed several times with absolute ethanol, and vacuum-dried to obtain copper indium selenide nanomaterials.

[0028] figure 2 is the transmission electron micrograph of the obtained copper indium selenide nanomaterial. It can be seen from the figure that this material is CuInSe with pure tetragonal chalcopyrite structure. 2 ...

Embodiment 3

[0030] ①According to the quantity of substances, add 10 parts of selenium powder, 50 parts of Vc and 1000 parts of DMF into the polytetrafluoroethylene reaction kettle, then seal the reaction kettle, put it in an oven at 120°C, and keep it for 24 hours before reacting The kettle was naturally cooled to room temperature.

[0031] ②Open the reactor and quickly add 5 parts of copper acetate, 5 parts of indium chloride and 25 parts of polyvinylpyrrolidone, then seal the reactor, control the temperature at 200°C, and react for 12 hours.

[0032] ③ After the reaction, the reaction kettle was naturally cooled to room temperature, the product was filtered, washed several times with absolute ethanol, and vacuum-dried to obtain copper indium selenide nanomaterials.

[0033] image 3 is the transmission electron micrograph of the obtained copper indium selenide nanomaterial. It can be seen from the figure that this material is CuInSe with pure phase tetragonal chalcopyrite structure. ...

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Abstract

The invention discloses a method for preparing copper indium selenium nano tablets in the technical field of nano materials. In the method, a two-step solvothermal method is adopted. The method comprises the following steps of: loading Vc, selenium powder and dimethyl formamide (DMF) in a polytetrafluoroethylene reaction kettle and heating the selenium powder to reduce the selenium powder; and then quickly adding copper salt and indium salt, heating for the second time and reacting to prepare a copper indium selenium nano material. The problem of a selenium resource generally existing in the process of preparing the copper indium selenium nano material and the problem that the obtained copper indium selenium has an irregular shape or is agglomerated seriously and the like in the prior artare solved. The method is simple and low in production cost. And the obtained copper indium selenium nano material can further meet industrial requirements.

Description

technical field [0001] The invention relates to a method in the technical field of nanomaterials, in particular to a method for preparing copper indium selenium nanosheets. Background technique [0002] Solar energy is an inexhaustible clean energy source, which provides huge energy to the earth, 3x10J per year, which is about 10,000 times the energy consumed by human beings every year. If human beings can use solar energy as a resource, not only the energy crisis faced by human beings can be solved, but also the ecological environment crisis accompanied by previous energy consumption can be eliminated. Since the development of silicon solar cells in 1954, solar cell technology has developed rapidly. Due to the aggravation of the energy crisis, people are more and more interested in renewable energy, and solar cells have also entered a stage of rapid development, which also makes solar cell materials become the focus of research. Among them, copper indium selenide alloy is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/00C01G15/00B82Y40/00
Inventor 袁艳萍钱雪峰沈杰宰建陶徐淼
Owner SHANGHAI JIAO TONG UNIV
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