SnS nanocrystalline thin film preparation method

A nanocrystalline and thin-film technology, applied in the field of solar cells, can solve the problems of uncontrollable crystal nuclei formation and growth rate, inability to realize industrialized production, rare multi-component compounds, etc., and achieve accurate and easy-to-control stoichiometric ratio of thin films with low cost , film dense effect

Inactive Publication Date: 2012-06-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrochemical deposition method is difficult to prepare ideal thin film materials with complex composition, and the formation and growth rate of crystal nuclei on the surface of the substrate cannot be controlled. Most of the obtained compound semiconductor thin

Method used

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  • SnS nanocrystalline thin film preparation method
  • SnS nanocrystalline thin film preparation method
  • SnS nanocrystalline thin film preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of SnS nanocrystal solution:

[0036] 0.2256g stannous chloride dihydrate (SnCl 2 ·H 2 0) dissolved in 10ml of diethylene glycol, under magnetic stirring, completely dissolved, as the tin source precursor solution; 0.07513g thioacetamide CH 3 CSNH 2 , 0.1g polyvinylpyrrolidone (PVP), 0.25ml hydrazine hydrate is dissolved in the diethylene glycol of 40ml, under magnetic stirring, dissolves completely, as sulfur source precursor solution; Insert a thermometer into the three-necked flask of the reflux tube, pass in nitrogen as a protective gas, and heat to 180°C; then transfer the tin source precursor solution to a syringe, then inject it into the three-necked flask to initiate the reaction, reflux at 180°C, and keep warm for 20 minutes After that, quickly place it in a water bath, cool to room temperature, and make a SnS nanocrystal solution;

[0037] The diethylene glycol is a solvent, polyvinylpyrrolidone is a dispersant, and hydrazine hydrate is an ...

Embodiment 2

[0047] Example 2 is basically the same as Example 1, except that the addition of 0.25 ml of hydrazine hydrate during the preparation of the nanocrystals is replaced by the addition of 0.1 ml of triethanolamine (TEA).

Embodiment 3

[0049] Example 3 is basically the same as Example 1, except that the addition of 0.25 ml of hydrazine hydrate during the preparation of the nanocrystals is replaced by the addition of 0.1 ml of ammonia water.

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PUM

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Abstract

The invention discloses a SnS nanocrystalline thin film preparation method, which adopts an ink method. The preparation method comprises two steps: (1) preparation of SnS nanocrystalline ink including preparing a Sn-source precursor solution and a S-source precursor solution, respectively adding the S-source precursor solution and high-temperature injecting the Sn-source precursor solution into a three-neck flask, refluxing in the N2 atmosphere to prepare a SnS nanocrystalline solution, centrifugally cleaning the nanocrystalline solution with absolute ethanol, and ultrasonically dispersing in absolute ethanol to obtain the ink; (2) thin film preparation including soaking a glass substrate in the nanocrystalline ink, and preparing the thin film by dip-coating method. The preparation method is simple, and can control the formation and growth speed of crystal nucleus. Additionally, the preparation method is easy in controlling stoichiometric ratio, and is suitable for preparation of multicomponent thin film.

Description

technical field [0001] The invention relates to a solar cell, in particular to a SnS nanocrystalline semiconductor thin film of a solar cell light absorbing layer material. Background technique [0002] With the development of economy and social progress, human beings' demand for energy is increasing day by day, and traditional non-renewable resources such as coal, oil, and natural gas are becoming increasingly depleted, making energy issues a major issue facing the world. As a renewable green and clean energy, solar energy has been widely valued by countries all over the world, and the development and application of solar cells has also become the focus of research in various countries. Organic compound thin-film solar cells have the advantages of relatively low cost and high theoretical photoelectric conversion efficiency compared with traditional solar cells, that is, silicon solar cells, and have broad prospects in application research. As an important part of solar cel...

Claims

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Application Information

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IPC IPC(8): C03C17/22C01G19/00
Inventor 靳正国任莉
Owner TIANJIN UNIV
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