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Comparison of morphological and optical properties of nanocrystalline tin selenide powder and thin films

DEEP SHIKHA1,2, R. P. CHAUHAN3, JEEWAN SHARMA4,*

Affiliation

  1. Department of Physics, Maharishi Markandeshwar University, Mullana, Ambala-133207 India
  2. Ambala College of Engineering and Applied Research, Mithapur-133101 India
  3. Department of Physics, National Institute of Technology, Kurukshetra-136119 India
  4. Department of Nanotechnology, Shri Guru Granth Sahib World University, Fatehgarh Sahib-140406 India

Abstract

Chemical bath deposition technique has been used to synthesize tin selenide (SnSe) powder and thin films. The synthesized SnSe has been found to have grain size less than 100 nm. The SnSe thin films are deposited on glass substrates in an aqueous alkaline medium using sodium selenosulphate as Se2- ion source. To assess the quality of the SnSe thin films the morphology of SnSe has been studied by using scanning electron microscopy (SEM) at different resolutions and crystallite size has been calculated by X-ray diffraction (XRD). Information of the strain and the particle size has been obtained from the full widths at half maximum (FWHM) of the diffraction peaks. The band gap of nanocrystalline SnSe has been calculated using absorbance curves and blue shift in the fundamental edge has been observed..

Keywords

Morphological, Chemical bath deposition, Tin selenide thin films.

Citation

DEEP SHIKHA, R. P. CHAUHAN, JEEWAN SHARMA, Comparison of morphological and optical properties of nanocrystalline tin selenide powder and thin films, Optoelectronics and Advanced Materials - Rapid Communications, 6, 7-8, July-August 2012, pp.734-737 (2012).

Submitted at: March 19, 2012

Accepted at: July 19, 2012