Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (1): 100-106.DOI: 10.15541/jim20170138

• Orginal Article • Previous Articles     Next Articles

Na1.88Bi1.88S4 and Na1.36Ca1.28Bi1.36S4 Single Crystals: Growth, Structure and Optical Property

WANG Dong1,2, HE Jiao-Qiao2, LAI Xiao-Fang3,4, HUANG Rong-Tie2, SHI Ying1, HUANG Fu-Qiang2,3   

  1. 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
    2. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
    3. State Key Laboratory of Rare Earth Materials Chemistry and Applications and Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
    4. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    5. Material Laboratory of State Grid Corporation of China, State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute, Beijing 102209, China
  • Received:2017-03-27 Online:2018-01-23 Published:2017-12-15
  • Supported by:
    Foundation item: National Key Research and Development Program (2016YFB0901600);Science and Technology Commission of Shanghai (16JC1401700);National Natural Science Foundation of China (11404358, 51402335)

Abstract:

Na1.88Bi1.88S4 and Na1.36Ca1.28Bi1.36S4 single crystals of high quality were successfully synthesized by solid-state reaction method using NaI as flux. Both compounds crystallize in the rocksalt structure type of a cubic Fm-3m space group. The preferred orientation growth of lattice face (111) were observed in both two compounds. The optical absorption measurements show that the band gap of Na1.88Bi1.88S4 and Na1.36Ca1.28Bi1.36S4 compounds are 1.29 eV and 1.45 eV, respectively. Two compounds were fabricated into devices that exhibit notable photoelectric behavior, suggesting their potential for applications as photoelectric switches.

Key words: single crystal growth, Na1.88Bi1.88S4, Na1.36Ca1.28Bi1.36S4, semiconducting materials

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