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Structural, optical and electrical study of nanocrystalline SnSe thin films: effect of pH



  1. Department of Physics, Maharishi Markandeshwar University, Mullana, Ambala-133207, India
  2. PG Department of Physics, Sri Guru Teg Bahadur Khalsa College, Anandpur Sahib-140118, India
  3. Department of Nanotechnology, Sri Guru Granth Sahib University, Fatehgarh Sahib – 140407, India


Abstract. Nanocrystalline tin selenide (SnSe) thin film form has been synthesized by chemical bath deposition technique. The thin film is deposited on glass substrates in an aqueous alkaline medium using sodium selenosulphate as Se2- ion source. The comparison of structural, optical and electrical properties of SnSe thin films at different pH of the solution has been studied. Structural and morphological characterization is done by X-ray diffraction (XRD). The films were polycrystalline with peaks corresponding to the orthorhombic phase. The grain size increases with increase of pH. The microstructural parameters like strain and dislocation density were also calculated and compared at different pH. The optical band gap of nanocrystalline SnSe thin films at different pH has been measured using UV – VIS absorbance spectroscopy and steady state and transient photoconductivity has been discussed in electrical properties..


Structural, Optical, Electrical, Chemical bath deposition, Tin selenide.

Submitted at: Jan. 11, 2015
Accepted at: Feb. 10, 2016


DEEP SHIKHA, J. K. SHARMA, J. SHARMA, Structural, optical and electrical study of nanocrystalline SnSe thin films: effect of pH, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 1-2, pp. 130-135 (2016)