Synthetic method of forbidden bandwidth-adjustable nanometer chalcopyrite

A technology of band gap, synthesis method, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as limiting performance

Inactive Publication Date: 2013-09-11
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bandgap of ideal solar cell materials is 1.4-1.5 eV, while the bandgap of chalcopyrite is relatively small, which limits its performance in photoelectricity and other aspects.

Method used

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  • Synthetic method of forbidden bandwidth-adjustable nanometer chalcopyrite
  • Synthetic method of forbidden bandwidth-adjustable nanometer chalcopyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 0.6819 g of copper chloride dihydrate, 1.0812 g of ferric chloride hexahydrate and 0.9134 g of thiourea into a beaker containing 15 mL of absolute ethanol, and ultrasonically operate for 3 minutes to mix evenly, and then add 15 mL of Distilled water continued to sonicate for 6 minutes, then transferred the uniformly mixed solution to a high-pressure reactor, and continued to react for 24 hours at a constant temperature of 200°C, then cooled to room temperature, centrifuged to separate the product, washed 3 times with distilled water and absolute ethanol, and After drying at 80 °C for 12 hours, the nano-chalcopyrite a 0 , with a particle size of 38.7 nm and a band gap of 2.0 eV.

Embodiment 2

[0014] The steps are the same as in Example 1, except that 0.6819 g copper chloride dihydrate, 1.0812 g ferric chloride hexahydrate, 0.8678 g thiourea and 0.0474 g selenium powder are added to the beaker containing 15 mL of absolute ethanol respectively, and then Add 15 mL of distilled water to it and mix evenly under ultrasonic conditions, then transfer the mixed solution to a high-pressure reactor, and continue the reaction at a constant temperature of 200 °C for 24 hours. After cooling to room temperature, the product is centrifuged and washed with distilled water and absolute ethanol respectively. After 3 times and drying at 80 °C for 12 hours, Se-doped nano-chalcopyrite a 1 , with a particle size of 31.2 nm and a bandgap of 1.8 eV.

Embodiment 3

[0016] The steps are the same as in Example 1, except that 0.6819 g copper chloride dihydrate, 1.0812 g ferric chloride hexahydrate, 0.8221 g thiourea and 0.0948 g selenium powder are added to the beaker containing 15 mL of absolute ethanol respectively, and then Add 15 mL of distilled water to it and mix evenly under ultrasonic conditions, then transfer the mixed solution to a high-pressure reactor, and continue the reaction at a constant temperature of 200 °C for 24 hours. After cooling to room temperature, the product is centrifuged and washed with distilled water and absolute ethanol respectively. After 3 times and drying at 80 °C for 12 hours, Se-doped nano-chalcopyrite a 2 , with a particle size of 38.6 nm and a bandgap of 1.7 eV.

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Abstract

The invention discloses a synthetic method of forbidden bandwidth-adjustable nanometer chalcopyrite. The synthetic method is characterized by comprising the following steps of: adopting a solvothermal method to continuously react for 24 hours under the constant-temperature condition of 200 DEG C by using copper chloride dehydrate, iron chloride hexahydrate and thiourea as reaction materials, using aluminum chloride anhydrous and selenium powder as doping agent and using distilled water and alcohol as reaction solvent; cooling to the room temperature; respectively washing the centrifugally-separated product for three times by virtue of the distilled water and absolute ethyl alcohol; drying for 12 hours under the condition of 80 DEG C to obtain pure nanometer chalcopyrite and doped chalcopyrite products. The synthetic method of the forbidden bandwidth-adjustable nanometer chalcopyrite is reasonable in design and simple in process. Moreover, the forbidden bandwidth of the obtained product is adjustable within a range of 1.2 eV to 2.2eV.

Description

Technical field [0001] The present invention belongs to the artificial synthesis technology field of natural minerals, and especially involves the preparation method of bandwidth can adjust nano -bronze ore. Background technique [0002] I-III-Vi 2 Tri -element compound Bronze Mine (CUFES 2 ) It is an important semiconductor functional material. It has a narrow banned bandwidth (0.6 EV) and the high Naer temperature (550 ° C), plus its unique light, electricity, magnetic performance, in many areas of modern society in many areas of modern societyWith extensive applications, such as sensors, optical electrical pipes, solar batteries, catalysts, etc. 2 Become an indispensable functional material recognized.Naturally, the impurities of brass ore are high and the extraction of pure substances is difficult. Therefore, artificial synthesis technology has become one of the ways to obtain pure brass ore, and artificial synthesis has also achieved a certain success (CN102603008A).We know ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12B82Y30/00
Inventor 孙中溪葛东来禹化健李英廉会良
Owner UNIV OF JINAN
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