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Title: Effect of solvent ratio on the optoelectronic properties of fluorine doped tin oxide thin films

Fluorine doped tin oxide (FTO) thin films were deposited on to the well cleaned microscopic glass substrates using nebulized-spray pyrolysis (n-SP) technique by varying the water to ethanol solvent proportion. The deposited thin films were characterized by X-ray diffraction (XRD), UV-Vis-NIR spectroscopy, field emission scanning electron microscopy and Hall measurements to study the structural, optical, surface morphological and electrical properties of the films, respectively. Results of the analyzes show that the films are polycrystalline, having tetragonal structure with the preferred orientation along (110) plane. The grain size varies between 7 to 20 nm. The optimized films exhibit the optical transparency of 85 % at the wavelength of 580 nm. The optical bandgap lies in the range of 3.94 to 4 eV. The optimized films, deposited with 40 % of ethanol proportion are having the mean resistivity 4.72×10{sup −3} Ω-cm, carrier concentration 1.79×10{sup 20} cm{sup 3} and the mobility 7 cm{sup 2}/Vs.
Authors:
; ; ;  [1] ;  [2]
  1. Center for Nanotechnology and Advanced Biotechnology, SASTRA University, Thanjavur – 613401 (India)
  2. (India)
Publication Date:
OSTI Identifier:
22490397
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CONCENTRATION RATIO; DOPED MATERIALS; ELECTRICAL PROPERTIES; ETHANOL; EV RANGE; FIELD EMISSION; FLUORINE; GLASS; GRAIN ORIENTATION; GRAIN SIZE; MOBILITY; OPACITY; POLYCRYSTALS; PYROLYSIS; SCANNING ELECTRON MICROSCOPY; SOLVENTS; SUBSTRATES; THIN FILMS; TIN OXIDES; X-RAY DIFFRACTION