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Investigations on structural, optical and thermoelectric parameters of spray deposited bismuth selenide thin films with different substrate temperature

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dc.contributor.author Anwar, Sharmistha
dc.contributor.author Anwar, Shahid
dc.contributor.author Mishra, B.K.
dc.contributor.author Singh, S.K.
dc.date.accessioned 2018-10-01T12:25:27Z
dc.date.available 2018-10-01T12:25:27Z
dc.date.issued 2014
dc.identifier.citation Materials Chemistry And Physics, 148(1-2), 2014: 230-235
dc.identifier.issn 0254-0584
dc.identifier.uri http://ore.immt.res.in/handle/2018/1970
dc.description CSIR-IMMT [OLP-46]
dc.description.abstract A series of Bi2Se3 films was deposited at different substrate temperature in 150-500 degrees C temperature range using spray pyrolysis technique, in order to study the effect of substrate temperature on structural and thermoelectric properties. The crystallinity of the as-synthesized sample has been analyzed by X-ray diffraction, which shows the formation of hexagonal Bi2Se3. Scanning electron microscopy examination indicates that the Bi2Se3 microstructure strongly depends upon the change in substrate temperature. The optical absorption study shows that the direct band gap of the film decreases with increase in substrate temperature. The thermoelectrical measurements have shown n-type conductivity in as deposited films and the magnitude of Seebeck coefficient for films has been found to be increasing with increasing deposition temperature. Improved thermoelectric properties at higher substrate temperature shows promising aspect and Bi2Se3 films could be a good thermoelectric material at lower temperature range. (C) 2014 Elsevier B.V. All rights reserved.
dc.language en
dc.publisher Elsevier
dc.relation.isreferencedby SCI
dc.rights Copyright [2014]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject Materials Sciences
dc.title Investigations on structural, optical and thermoelectric parameters of spray deposited bismuth selenide thin films with different substrate temperature
dc.type Journal Article
dc.affiliation.author CSIR-IMMT, Bhubaneswar 751013, Odisha, India


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