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Method for preparing pyrite phase iron disulfide thin film

A technology of iron disulfide and pyrite, which is applied in the field of photoelectric materials and new energy materials, can solve the problems such as difficult to obtain iron disulfide film of pyrite phase, and achieve the effect of solving the problem of sulfur vacancy and overcoming sulfur vacancy

Active Publication Date: 2016-07-20
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing preparation of pyrite-phase iron disulfide films is that there are generally sulfur vacancies in the films, and it is not easy to obtain pyrite-phase iron disulfide films.

Method used

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  • Method for preparing pyrite phase iron disulfide thin film
  • Method for preparing pyrite phase iron disulfide thin film
  • Method for preparing pyrite phase iron disulfide thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add 1.39g of ferrous sulfate heptahydrate and 0.83g of polyvinylpyrrolidone into 20ml of deionized water, stir for half an hour and add 0.76g of thiourea; transfer the above solution to the inner lining of the autoclave, and add 0.64g of sulfur powder , add an appropriate amount of ethanol to make the liquid volume reach about 80% of the volume of the autoclave lining. The autoclave was placed in a box furnace and heated at 200°C for 24 hours. After the temperature is cooled to room temperature, the liquid in the autoclave lining is poured out, washed with ethanol, deionized water, and carbon disulfide in sequence, and finally the powder is dried in an oven for use. figure 2 It is the scanning electron micrograph of this embodiment product; Figure 5 Be the X-ray diffraction result of this embodiment product; Image 6 It is the Raman result of the product of this example.

[0033] (2) Add 0.1 g of iron disulfide powder to 5 ml of ethanol, add 0.1 g of terpineol ...

Embodiment 2

[0038] (1) Add 10ml of oleylamine to a three-necked bottle protected by nitrogen, add 0.20g of ferrous chloride tetrahydrate, and keep the temperature at 120°C for 1 hour to obtain solution A; in another container protected by nitrogen, add 0.19g Dissolve sulfur powder in 5ml of diphenyl ether, react at 70°C for 1 hour to obtain solution B; inject solution B into solution A through a needle, react at 220°C for 24 hours, then cool to room temperature. Rinse with absolute ethanol and chloroform several times, and finally dry the powder in an oven for use. image 3 It is the scanning electron micrograph of this embodiment product; Figure 5 Be the X-ray diffraction result of this embodiment product; Image 6 It is the Raman result of the product of this example.

[0039] (2) Add 0.1 g of iron disulfide powder to 5 ml of ethanol, add 0.1 g of terpineol and 0.4 g of ethyl cellulose, and stir magnetically for one day.

[0040] (3) ultrasonically clean the FTO conductive glass and...

Embodiment 3

[0044] (1) Add 1.39g of ferrous sulfate heptahydrate and 0.83g of polyvinylpyrrolidone into 20ml of deionized water, stir for half an hour and add 0.76g of thiourea; transfer the above solution to the inner lining of the autoclave, and add 0.64g of sulfur powder , add an appropriate amount of ethanol to make the liquid volume reach about 80% of the volume of the autoclave lining. The autoclave was placed in a box furnace and heated at 200°C for 39 hours. After the temperature is cooled to room temperature, the liquid in the autoclave lining is poured out, washed with ethanol, deionized water, and carbon disulfide in sequence, and finally the powder is dried in an oven for use. Figure 4 It is the scanning electron micrograph of this embodiment product; Figure 5 Be the X-ray diffraction result of this embodiment product; Image 6 It is the Raman result of the product of this example.

[0045] (2) Add 0.1 g of iron disulfide powder to 5 ml of ethanol, add 0.1 g of terpineol ...

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Abstract

The invention discloses a method for preparing a pyrite phase iron disulfide thin film.The method includes the steps that pyrite phase iron disulfide powder is obtained through a hydrothermal method or a thermal injection method; the iron disulfide powder, ethyecellulose and terpilenol are mixed into slurry; a glass or FTO conductive glass substrate is brushed with the iron disulfide slurry through a silk screen printing method; thermal treatment is conducted in the sulfur and nitrogen / argon atmosphere, and the pyrite phase iron disulfide thin film is obtained.The obtained pyrite phase iron disulfide thin film can effectively solve the problem of sulfur omission and can serve as a light absorbing layer or a counter electrode of a solar cell or be used for an electrode.

Description

technical field [0001] The invention relates to the field of photoelectric materials, new energy materials and technologies, in particular to a pyrite-phase iron disulfide thin film and a preparation method thereof. Background technique [0002] Pyrite phase iron disulfide (FeS 2 ) has a suitable band gap (0.95eV) and a large light absorption coefficient (α≥5×10 5 , λ=700nm), and its constituent elements are cheap, abundant in reserves, and non-toxic. It is a material that has been widely studied and has great application potential in the fields of lithium batteries and solar cells. [0003] At present, there are many methods for preparing pyrite-phase iron disulfide films at home and abroad, such as iron sulfide film method, sol-gel method, electrodeposition method, hydrothermal method, spray method, etc. The disadvantage of the existing methods for preparing pyrite-phase iron disulfide films is that there are generally sulfur vacancies in the films, and it is difficult t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/347C03C2218/119
Inventor 董伟伟宋超王时茂方晓东陶汝华邓赞红邵景珍
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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