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Controllable preparation method of multielement sulfide semiconductor nano-material

A nanomaterial, sulfide technology, applied in chemical instruments and methods, iron sulfide, tin compounds, etc., to achieve the effect of simple process and low price

Inactive Publication Date: 2015-12-16
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is aimed at preparing FeS at present 2 And the deficiencies and problems of various methods of CZTS nanoparticles, and proposed a controllable preparation method of polynary sulfide semiconductor nanomaterials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Weigh 100 mg of ferrous chloride and 10 g of octadecylamine into a 50 ml four-neck flask, add a rotor and stir to dissolve.

[0039] 2) Weigh 100mg of sulfur powder and dissolve in 2g of octadecylamine, heat to 100°C, stir to dissolve.

[0040] 3) Heat the solution in 1) to 120°C. After injecting the solution in 2) into the solution in 1), continue heating to 220°C and keep at this temperature for 180min.

[0041] 4) After the system was cooled to room temperature, the resulting solution was washed with chloroform and centrifuged at 6000 rpm for 3 minutes. Repeat washing and centrifugation until the final centrifugation liquid is clear and transparent, and then put the obtained black solid in an oven at 80°C for 6 hours to obtain FeS 2 nanoparticles.

[0042] The phase composition identification of the material prepared in Example 1 was carried out by X-ray diffractometer. Such as figure 1, the 2θ angle positions of the peaks in the figure are 28.5°, 33.1°, 37.1...

Embodiment 2

[0045] 1) Weigh 278mg of ferric chloride and 15g of oleylamine into a 50ml four-neck flask, add a rotor and stir to dissolve.

[0046] 2) Weigh 192mg of sulfur powder and dissolve in 2g of oleylamine, heat to 90°C and stir to dissolve.

[0047] 3) Heat the solution in 1) to 220°C, inject the solution in 2) into the solution in 1), and keep at this temperature for 60 minutes after the temperature rises to 220°C.

[0048] 4) After the system was cooled to room temperature, the obtained solution was washed with n-hexane and centrifuged at 8000 rpm for 5 minutes. Repeat washing and centrifugation until the final centrifugation liquid is clear and transparent, and then put the obtained black solid in an oven at 80°C for 3 hours to obtain FeS 2 nanoparticles.

[0049] The phase composition identification of the material prepared in Example 2 was carried out by X-ray diffractometer. Such as image 3 , the 2θ angle positions of the peaks in the figure are 28.5°, 33.1°, 37.1°, 40.8...

Embodiment 3

[0052] 1) Weigh 278mg of ferric chloride and 10g of oleylamine into a 50ml four-neck flask, add a rotor and stir to dissolve.

[0053] 2) Weigh 256mg of sulfur powder and dissolve in 4g of octadecene, heat to 100°C and stir to dissolve.

[0054] 3) Heat the solution in 1) to 220°C, inject the solution in 2) into the solution in 1), and keep at this temperature for 30 minutes after the temperature rises to 220°C.

[0055] 4) After the system was cooled to room temperature, the obtained solution was washed with n-hexane and centrifuged at 6000 rpm for 3 minutes. Repeat washing and centrifugation until the final centrifugation liquid is clear and transparent, and then put the obtained black solid in an oven at 70°C for 4 hours to obtain FeS 2 nanoparticles.

[0056] The phase composition identification of the material prepared in Example 3 was carried out by X-ray diffractometer. Such as Figure 5 , the 2θ angle positions of the peaks in the figure are 28.5°, 33.1°, 37.1°, 40...

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Abstract

The invention relates to a controllable preparation method of a multielement sulfide semiconductor nano-material. The controllable preparation method comprises 1, weighing a metal salt and a high boiling point organic solvent, and carrying out mixing stirring dissolution to obtain a metal salt solution, 2, weighing a solid sulfur source and dissolving the solid sulfur source in the high boiling point organic solvent to obtain a sulfur solution or directly utilizing a liquid sulfur source as a sulfur solution, 3, respectively heating the metal salt solution and the sulfur solution, injecting the sulfur solution into the metal salt solution, heating the mixed solution to a reaction temperature, and carrying out a reaction process, and 4, cooling the reaction liquid, carrying out washing, carrying out centrifugation until the supernatant liquid is clear and transparent, putting the obtained black solids into a drying oven and carrying out drying to obtain the multielement sulfide semiconductor nano-material. Through control of reaction time, a reaction temperature, reaction raw material types and sulfur source types, accurate regulation and control of material morphology, size, phase structure and optical properties are realized. The controllable preparation method of the multielement sulfide semiconductor nano-material has the advantages of low price, simple processes, safety, environmental friendliness and industrial production easiness.

Description

technical field [0001] The invention relates to a controllable preparation method of a polynary sulfide semiconductor nanometer material; in particular, it relates to the technical field of preparation of binary and quaternary sulfide semiconductor nanometer materials. Background technique [0002] With the intensification of environmental pollution and the increasing scarcity of traditional fossil energy, renewable and clean new energy represented by solar energy has developed rapidly. As one of the most effective ways to utilize solar energy, solar cells have begun to play a role in today's new energy field. role, and continue to influence the new generation of energy revolution. [0003] Solar cells are devices based on semiconductor materials that use the "photovoltaic effect" to directly convert solar energy into electrical energy. Since its appearance in the middle of the last century, solar cell technology has gone through three generations, the first generation of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12C01G19/00B82Y30/00
Inventor 暴宁钟黄凯高凌庞超郭国标张晓艳
Owner NANJING UNIV OF TECH
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