SYNTHESIS OF CHALCOPYRITE CuInSe2 (CIS) NANOSHEETS USING VITAMIN C AS AN ADJUVANT AND PHOTOELECTRIC PROPERTIES OF CIS THIN FILMS

College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China; X. L. CHEN; Y. M. ZHANG; College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China; J. F. WAN; Key College of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining 810007, China; J. L. DU; College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China; Z. L. ZHAO; College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China; G. WANG; College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China; Key College of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining 810007, China; Key Laboratory of Resource Chemistry and Ecological Environment Protection of the Qinghai Tiber Plateall, Qinghai University for Nationalities, Xining 810007, China

doi:10.15251/cl.2020.1712.593

journal article·2020-12

SYNTHESIS OF CHALCOPYRITE CuInSe2 (CIS) NANOSHEETS USING VITAMIN C AS AN ADJUVANT AND PHOTOELECTRIC PROPERTIES OF CIS THIN FILMS

College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China, X. L. CHEN, Y. M. ZHANG, College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China, J. F. WAN, Key College of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining 810007, China, J. L. DU, College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China, Z. L. ZHAO, College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China, G. WANG, College of Physics and Electronic Information Engineering, Qinghai University for Nationalities, Xining 810007, China, Key College of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining 810007, China, Key Laboratory of Resource Chemistry and Ecological Environment Protection of the Qinghai Tiber Plateall, Qinghai University for Nationalities, Xining 810007, China

Chalcogenide Letters· Volume 17· Issue 12

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Source abstract

Abstract

To prepare chalcopyrite-phase CuInSe2 (CIS) nanosheets, green reductants were screened by using them to reduce the valence state of copper sources using a N,N-dimethylformamide/triethylene glycol(DMF/TEG) mixed solvent. CuCl was used as the copper source, indium chloride as the indium source, selenium powder as the selenium source, TEG as the anionic solvent, DMF as the cationic solvent, and Vitamin C (Vc) as the reductant. The influences of reaction temperature, reaction time, and Vc amount on the phase and composition of synthetic CuInSe2 nanosheets were examined, and the results were used to propose a reaction mechanism. The optional reaction conditions were a reaction temperature of 260 oC, a reaction time of 16 h, and a Vc amount of 0.20 g. Chalcopyrite-phase CIS nanosheets were synthesized with particle sizes of 14 µm and a uniform particle size distribution. CuInSe2 thin films displayed good surface smoothness and compactness in a 5.5 µm spin-cast film. The thin film showed a bandgap of 1.08 eV, a carrier concentration of 5.26×1016 cm-3 , and a carrier mobility of 150.41 cm2 V -1 S -1 . The results showed that this strategy can be used to prepare chalcopyrite-phase CIS which could be used as a photosensitive layer for various optoelectronic devices.

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Research context

Nanomaterials Electronic materials

OpenAlex topics: Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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