Graphene-mediated band gap engineering of WO3 nanoparticle and a relook at Tauc equation for band gap evaluation

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dc.contributor.authorBaishya, K.
dc.contributor.authorRay, J.S.
dc.contributor.authorDutta, P.
dc.contributor.authorDas, P.P.
dc.contributor.authorDas, S.K.
dc.date.accessioned2026-02-05T09:31:03Z
dc.date.issued2018
dc.description.abstractEngineering the band gap of semiconductors is often crucial in the quest for developing new and advanced technologies. In this report, the implication of graphene on the band gap optimization of tungsten trioxide (WO<inf>3</inf>) is discussed. Simple one-step sol–gel process was followed to anchor WO<inf>3</inf> nanoparticles in graphene. Graphene induces a redshift in the band gap of WO<inf>3</inf>. Band gap narrowing of 6.60% is observed for 7 wt% graphene-tethered WO<inf>3</inf>. Interestingly, a profound difference is observed in estimating the band gap energy values following the usual Tauc equation. Our observation suggests that the differential form of Tauc equation is better suited to determine the band gap energy of inorganic semiconductors than the typical extrapolation method. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
dc.identifier.citationApplied Physics A: Materials Science and Processing, 2018, 124, 10, pp. -
dc.identifier.issn9478396
dc.identifier.urihttps://doi.org/10.1007/s00339-018-2097-0
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/24987
dc.publisherSpringer Verlag service@springer.de
dc.subjectGraphene
dc.subjectNanoparticles
dc.subjectSols
dc.subjectTungsten compounds
dc.subjectAdvanced technology
dc.subjectBand gap energy
dc.subjectBand gap engineering
dc.subjectBand gap narrowing
dc.subjectDifferential forms
dc.subjectGel process
dc.subjectInorganic semiconductors
dc.subjectTungsten trioxide
dc.subjectEnergy gap
dc.titleGraphene-mediated band gap engineering of WO3 nanoparticle and a relook at Tauc equation for band gap evaluation

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