Physics Scripta, ( ISI ), Volume (86), No (5), Year (2012-11) , Pages (557011-557017)

Title : ( The structural, thermoelectric and photoconductive properties of sulfur doped In2O3 thin films prepared by spray pyrolysis )

Authors: M. Hasan Zadeh Maha , M.-M. Bagheri-Mohagheghi , H. Azimi-Juybari , Mehrdad Shokooh-Saremi ,

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Abstract

In this study In2O3 and In2O3:S thin films were prepared on glass substrates using the spray pyrolysis technique. The effect of sulfur impurities on the structural, morphological, electrical, thermo-electrical, optical and photoconductive properties of films has been investigated. The sulfur to indium atomic ratios (x = [S]/[In]) were varied from 0 to 15 in the spray solution. From the x-ray diffraction analysis, a phase transition occurred from the cubic In2O3 to the cubic -In2S3 phase with increasing S-doping level. SEM images indicated that the nanostructure of the films has a particle-cluster type growth. The Hall effect measurements have shown n-type conductivity in all of the deposited films. The lowest resistance of 19 ksq−1 and the highest carrier concentration of 1.32×1019 cm−3 were obtained for the film deposited with an [S]/[In] atomic ratio of 0.6. The maximum of the Seebeck coefficient equal to 141μVK−1 was obtained at 400K for the film deposited with an [S]/[In] atomic ratio of 1. The average transmittance of films varied over the range 40–80% with S-concentration. The band gap values of samples were obtained in the range of 3.85–3.96 eV. From the photoconductivity studies, the sample prepared with the [S]/[In] atomic ratio of 0.2 exhibited the highest photoconductivity among the In2O3:S films.

Keywords

, PACS numbers: 78.40.Fy, 81.15.Fg, 87.85.jc, 73.61.Jc
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@article{paperid:1030663,
author = {M. Hasan Zadeh Maha and M.-M. Bagheri-Mohagheghi and H. Azimi-Juybari and Shokooh-Saremi, Mehrdad},
title = {The structural, thermoelectric and photoconductive properties of sulfur doped In2O3 thin films prepared by spray pyrolysis},
journal = {Physics Scripta},
year = {2012},
volume = {86},
number = {5},
month = {November},
issn = {0031-8949},
pages = {557011--557017},
numpages = {6},
keywords = {PACS numbers: 78.40.Fy; 81.15.Fg; 87.85.jc; 73.61.Jc},
}

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%0 Journal Article
%T The structural, thermoelectric and photoconductive properties of sulfur doped In2O3 thin films prepared by spray pyrolysis
%A M. Hasan Zadeh Maha
%A M.-M. Bagheri-Mohagheghi
%A H. Azimi-Juybari
%A Shokooh-Saremi, Mehrdad
%J Physics Scripta
%@ 0031-8949
%D 2012

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