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Title: Effect of two different dopants on structural and optical properties of bismuth vanadate
Authors: Grewal, Rupanjit Kaur
Supervisor: Singh, Kulvir
Keywords: Optical Properties;Structural Properties;Ceramics;Rietvald Refinement
Issue Date: 14-Aug-2013
Abstract: Bi4-xPbxV2O11-δ and Bi4V2-xAlxO11-δ (0.1≤x≤0.4) are synthesized by the solid state reaction me-thod to study the effect of two different substituents on the structure and optical properties. The Rietveld refinement results confirmed that Bi4-xPbxV2O11-δ (0.1≤x≤0.4) and Bi4V2-xAlxO11-δ up to x=0.1 exhibits monoclinic structure. For higher Al3+ substitutions which lead to form orthorhom-bic structure. The optical band gap and Urbach energy values are calculated from UV-visible spectra. Al3+ doped system shows low optical band gap values as compared to Pb2+ doped sys-tem. In both the cases, the optical band gaps lie in semiconducting range.
Description: Master of Technology
Appears in Collections:Masters Theses@SPMS

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