Articles
  • Defect identification and spectral analysis of nanosized SnS2-ZnO mixture for enhanced UV light absorption

  • Shih-Ming Tsenga, Alex C.H. Leeb,*, Omid Ali Zargarb, Chun-Chieh Huangc, Jow-Lay Huanga and Horng-Hwa Lub,*

  • aDepartment of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan, R.O.C.
    bDepartment of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411030, Taiwan, R.O.C.
    cDepartment of Semiconductor and Electro-Optical Engineering, Southern Taiwan University of Science and Technology, Tainan 710301, Taiwan, R.O.C.

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nano-sized tin sulfide (SnS₂) and zinc oxide (ZnO) particles were synthesized using the hydrothermal and precipitation methods, respectively. Subsequently, the two nano-powders were physically mixed by direct stirring at different molar ratios. The X-ray diffraction patterns of SnS2-ZnO composites showed that the peaks of SnS2 and ZnO had no impurity. The photoluminescence spectra results suggested that as ZnO existed in the SnS2 matrix, the amount of the anion/cation vacancies or ionized defects was associated with ZnO content. The X-ray photoelectron spectroscopy revealed that the bonding energy of Zn2+ and Sn4+ shifted to higher and lower energy levels, respectively, probably resulting in the formation of heterointerface and the change in Fermi level of the synthesized nanocomposites. The results from structural and spectroscopic-analyses suggested that the enhanced ultraviolet light absorption of SnS2 matrix containing 20 mol% ZnO was attributed to charge transfer at hetero-interfaces between amorphous ZnO nanoparticles and SnS2 nanocrystallites.


Keywords: Tin sulfide nanoparticles, Zinc oxide, Defect, Ultraviolet light absorption.

This Article

  • 2025; 26(6): 1074-1080

    Published on Dec 31, 2025

  • 10.36410/jcpr.2025.26.6.1074
  • Received on Jan 27, 2025
  • Revised on Apr 22, 2025
  • Accepted on Apr 28, 2025

Correspondence to

  • Alex C.H. Lee b and Horng-Hwa Lu b

  • aDepartment of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan, R.O.C.
    bDepartment of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411030, Taiwan, R.O.C.
    Tel : +886-4-23924504 ext 7152 (Alex C.H. Lee, ORCID: 0000-0002-0251-0931)
    Tel : +886-4-23924504 ext 7179 (Horng-Hwa Lu)

  • E-mail: alexchlee@ncut.edu.tw (Alex C.H. Lee), hhlu@ncut.e