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Title: A facile arrested precipitation method for synthesis of pure wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals using thiourea as a sulfur source

Abstract

Graphical abstract: High-resolution TEM image of wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals. Highlights: ► Wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals were synthesized by arrested precipitation method. ► XRD, EDX, TEM demonstrate that the CZTS nanocrystals are purely wurtzite structure. ► The average diameter of the bulk CZTS products is found to be 10 ± 1.1 nm. ► The estimated direct bandgap energy is 1.56 eV for wurtzite CZTS nanocrystals. ► The electrical resistivity of the wurtzite CZTS nanocrystals is low. -- Abstract: A facile route for the synthesis of wurtzite Cu{sub 2}ZnSnS{sub 4} (CZTS) nanocrystals was developed by an arrested precipitation method at 240 °C under simple reaction conditions with diethanolamine as the solvent and thiourea as sulfur source. The structure and morphology of the CZTS nanocrystals were characterized by X-ray diffraction and transmission electron microscopy. Control experiments demonstrated that CZTS nanocrystals which are purely wurtzite structure are readily obtained. The average diameter of the bulk CZTS products is found to be 10 ± 1.1 nm. The estimated direct bandgap energy is 1.56 eV, which indicates that the CZTS nanocrystals produced by this method possess promising applications in photovoltaic devices.

Authors:
 [1];  [2]; ;  [1];  [3];  [1];  [1]
  1. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region (Hong Kong)
  2. (China)
  3. Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074 (China)
Publication Date:
OSTI Identifier:
22215553
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRIC CONDUCTIVITY; NANOSTRUCTURES; PHOTOVOLTAIC EFFECT; PRECIPITATION; SEMICONDUCTOR MATERIALS; SPECTROSCOPY; SULFUR; SYNTHESIS; THIOUREA; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Li, Chunya, Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, Ha, Enna, Wong, Wing-Leung, Li, Cuiling, Ho, Kam-Piu, and Wong, Kwok-Yin, E-mail: bckywong@polyu.edu.hk. A facile arrested precipitation method for synthesis of pure wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals using thiourea as a sulfur source. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.014.
Li, Chunya, Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, Ha, Enna, Wong, Wing-Leung, Li, Cuiling, Ho, Kam-Piu, & Wong, Kwok-Yin, E-mail: bckywong@polyu.edu.hk. A facile arrested precipitation method for synthesis of pure wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals using thiourea as a sulfur source. United States. doi:10.1016/J.MATERRESBULL.2012.08.014.
Li, Chunya, Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, Ha, Enna, Wong, Wing-Leung, Li, Cuiling, Ho, Kam-Piu, and Wong, Kwok-Yin, E-mail: bckywong@polyu.edu.hk. Thu . "A facile arrested precipitation method for synthesis of pure wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals using thiourea as a sulfur source". United States. doi:10.1016/J.MATERRESBULL.2012.08.014.
@article{osti_22215553,
title = {A facile arrested precipitation method for synthesis of pure wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals using thiourea as a sulfur source},
author = {Li, Chunya and Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074 and Ha, Enna and Wong, Wing-Leung and Li, Cuiling and Ho, Kam-Piu and Wong, Kwok-Yin, E-mail: bckywong@polyu.edu.hk},
abstractNote = {Graphical abstract: High-resolution TEM image of wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals. Highlights: ► Wurtzite Cu{sub 2}ZnSnS{sub 4} nanocrystals were synthesized by arrested precipitation method. ► XRD, EDX, TEM demonstrate that the CZTS nanocrystals are purely wurtzite structure. ► The average diameter of the bulk CZTS products is found to be 10 ± 1.1 nm. ► The estimated direct bandgap energy is 1.56 eV for wurtzite CZTS nanocrystals. ► The electrical resistivity of the wurtzite CZTS nanocrystals is low. -- Abstract: A facile route for the synthesis of wurtzite Cu{sub 2}ZnSnS{sub 4} (CZTS) nanocrystals was developed by an arrested precipitation method at 240 °C under simple reaction conditions with diethanolamine as the solvent and thiourea as sulfur source. The structure and morphology of the CZTS nanocrystals were characterized by X-ray diffraction and transmission electron microscopy. Control experiments demonstrated that CZTS nanocrystals which are purely wurtzite structure are readily obtained. The average diameter of the bulk CZTS products is found to be 10 ± 1.1 nm. The estimated direct bandgap energy is 1.56 eV, which indicates that the CZTS nanocrystals produced by this method possess promising applications in photovoltaic devices.},
doi = {10.1016/J.MATERRESBULL.2012.08.014},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}