Please use this identifier to cite or link to this item: https://idr.l1.nitk.ac.in/jspui/handle/123456789/11427
Title: Graphene-mediated band gap engineering of WO3 nanoparticle and a relook at Tauc equation for band gap evaluation
Authors: Baishya, K.
Ray, J.S.
Dutta, P.
Das, P.P.
Das, S.K.
Issue Date: 2018
Citation: Applied Physics A: Materials Science and Processing, 2018, Vol.124, 10, pp.-
Abstract: Engineering 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 (WO3) is discussed. Simple one-step sol gel process was followed to anchor WO3 nanoparticles in graphene. Graphene induces a redshift in the band gap of WO3. Band gap narrowing of 6.60% is observed for 7 wt% graphene-tethered WO3. 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.
URI: http://idr.nitk.ac.in/jspui/handle/123456789/11427
Appears in Collections:1. Journal Articles

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