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Method for carrying out liquid-phase synthesis on Cu2S octahedral nanocrystal under high temperature

A liquid-phase synthesis and nanocrystal technology, applied in the direction of nanotechnology, copper sulfide, etc., can solve the problems of difficult control of components, high equipment requirements, and expensive prices, and achieve the effects of low equipment requirements, low prices, and simplified processes

Inactive Publication Date: 2011-07-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing Cu2S absorbing layer materials mainly include spraying method, evaporation method, etc. Among them, the spraying method has high requirements on equipment and is expensive; the composition of thin film materials synthesized by evaporation method is difficult to control

Method used

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  • Method for carrying out liquid-phase synthesis on Cu2S octahedral nanocrystal under high temperature
  • Method for carrying out liquid-phase synthesis on Cu2S octahedral nanocrystal under high temperature
  • Method for carrying out liquid-phase synthesis on Cu2S octahedral nanocrystal under high temperature

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Experimental program
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Effect test

Embodiment 1

[0018] Measure 10mL oleylamine into a round-bottomed flask, under nitrogen protection, slowly raise the temperature to 120°C under magnetic stirring, and keep it stable for 20min at 120°C, remove water and dissolved oxygen, then raise the temperature to 200°C, inject 0.05mol of / L 5mL of oleylamine solution of copper diethyldithiocarbamate precursor, the solution immediately turns black; 2 The S precipitate was washed with ethanol and centrifuged to obtain Cu 2 S nanocrystals.

Embodiment 2

[0020] Measure 15mL of oleic acid into a round bottom flask, under nitrogen protection, slowly raise the temperature to 120°C under magnetic stirring, and keep it stable for half an hour at 120°C, remove water and dissolved oxygen, then raise the temperature to 280°C, inject 0.1 mol / L organic amine solution 10mL of copper diethyldithiocarbamate precursor, the solution immediately turns black; 2 The S precipitate was washed with excess ethanol and centrifuged to obtain Cu 2 S nanocrystals.

Embodiment 3

[0022] Measure 20mL of octadecene into a round-bottomed flask, slowly raise the temperature to 120°C under magnetic stirring, protect it with nitrogen, and keep it stable at 120°C for 40min, remove water and dissolved oxygen, then raise the temperature to 320°C, inject 0.15 mol / L oleylamine solution of copper diethyldithiocarbamate precursor was 10mL, the solution immediately turned black; after reacting for 60min, naturally cooled to room temperature, the resulting black Cu 2 The S precipitate was washed with excess ethanol and centrifuged to obtain Cu 2 S nanocrystals.

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Abstract

The invention relates to a method for carrying out liquid-phase synthesis on Cu2S octahedral nanocrystal under high temperature. The method comprises the following steps: protecting organic solvents with high boiling points with nitrogen, slowly raising the temperature to 120 DEG C and keeping the constant temperature for half an hour, then raising the temperature to the decomposition temperature of a precursor, after the temperature is stable, injecting organic amine solution of a copper diethyldithiocarbamate precursor and carrying out centrifugation after the reaction is completed, thus obtaining Cu2S. The method has the following beneficial effects: the method is simpler to operate and has low requirement for equipment; the used various solvents are environment-friendly and do not produce high-toxicity substances; and the product can be prepared into nanocrystal ink and is easy for scale production.

Description

technical field [0001] The invention belongs to the field of preparation of solar photovoltaic cell materials, in particular to a high temperature liquid phase synthesis of Cu 2 S method for octahedral nanocrystals. Background technique [0002] In the process of sustainable development of human society, energy crisis and environmental protection are two major issues that need to be solved urgently. Changing the existing energy structure and developing sustainable green energy have become the focus of research in various countries. With the strong support of governments and the stimulation and promotion of relevant incentive policies, the solar photovoltaic industry has developed rapidly, the cost of photovoltaic modules has been continuously reduced, and the application field has expanded rapidly. [0003] Current solar cells are mainly divided into: silicon-based (single crystal silicon, polycrystalline silicon and amorphous silicon thin film) solar cells, compound semico...

Claims

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Application Information

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IPC IPC(8): C01G3/12B82Y40/00
Inventor 胡俊青蒋扉然陈志钢唐明华田启威胡向华宋琳琳
Owner DONGHUA UNIV