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Optical characterization of hydrothermally grown SnO2 nanocrystals

A. SHARMA1, D. PRAKASH2, K. D.VERMA1,*

Affiliation

  1. Material Science Research Laboratory, Department of Physics, S.V.College, Aligarh (U.P.) India
  2. School of Computer Science & Engineering, SMVD University, Kakryal (J & K) India

Abstract

A simple hydrothermal process is proposed for the synthesis of SnO2 nanoparticles in which ammonium hydroxide is used as the mineralizer. The crystal structure and size of the SnO2 nanoparticles were determined by X-ray diffraction. Optical properties of so formed nanoparticles were explored by UV-Vis absorption, Photoluminescence, and Raman studies. Experimental results indicate that the as-prepared SnO2 may have large amount of defects and local lattice disorders at the interface and surface. The visible emission from nanocrystalline SnO2 is interpreted in terms of the size of the crystals and the presence of the defects in the material. The appearance of new Raman peak marks an additional characteristic of space symmetry due to the agglomeration of grains in nanocrystalline tin oxide..

Keywords

SnO2, X-Ray Diffraction, Hydrothermal process, Nanocrystals.

Submitted at: Oct. 27, 2008
Accepted at: March 24, 2009

Citation

A. SHARMA, D. PRAKASH, K. D.VERMA, Optical characterization of hydrothermally grown SnO2 nanocrystals, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 3, pp. 331-337 (2009)