Structural, opto-electronic and photoelectrochemical properties of tungsten diselenide thin films

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• 作者：D. J. Sathe ; P. A. Chate ; P. P. Hankare ; A. H. Manikshete…
• 关键词：Nanostructure ; EDAX ; Chemical synthesis ; Electrical properties ; Efficiency ; Fill factor
• 刊名：Applied Nanoscience
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：6
• 期：2
• 页码：191-196
• 全文大小：929 KB
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• 作者单位：D. J. Sathe (1)
  P. A. Chate (2)
  P. P. Hankare (3)
  A. H. Manikshete (4)
  U. B. Sankpal (5)
  V. M. Bhuse (6)
  
  1. Department of Chemistry, KIT’s College of Engineering, Kolhapur, Maharashtra, India
  2. Department of Chemistry, JSM College, Alibag-Raigad, Maharashtra, India
  3. Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
  4. Department of Chemistry, Walchand College, Solapur, Maharashtra, India
  5. Department of Chemistry, R.P. Gogate- R.V. Jogalekar College of Arts Science and Commerce, Ratnagiri, Maharashtra, India
  6. Department of Chemistry, Rajaram College, Kolhapur, Maharashtra, India
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science
  Nanotechnology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：2190-5517

文摘

Nanocrystalline tungsten diselenide thin films have been deposited on non-conducting glass and stainless steel substrates by chemical methods. Various preparative conditions were optimized for the formation of thin films. The X-ray diffraction analysis shows that the film samples are in layer-hexagonal crystal structure. EDAX analysis shows that the films are nearly stoichiometries of W:Se. Optical properties show a direct band gap nature with band gap energy 1.5 eV. Specific electrical conductivity was found to be in the order of 10−3 to 10−2 (Ω cm)−1. The photoelectrochemical characterization of the films was carried out by studying current–voltage characteristics, capacitance–voltage and power output characteristics. The efficiency of photoelectrode was found to be 1.31 % using iodine–poly iodide electrolyte. Keywords Nanostructure EDAX Chemical synthesis Electrical properties Efficiency Fill factor