Theoretical and experimental study of temperature effect on electronic and optical properties of TiO<sub>2</sub>: Comparing rutile and anatase
Yu‐Ning Wu, Jeffrey Wuenschell, Robert Fryer, W. A. Al-Saidi, Paul R. Ohodnicki, Benjamin Chorpening, Yuhua Duan
Abstract
phases, the band gap is found to decrease for temperature above 300 K quantitatively, agreeing with our theoretical results. The temperature effects on the dielectric functions, the refractive index, the extinction coefficient as well as the optical conductivity are also investigated. Rutile and anatase show generally similar optical properties, but differences exist in the long wavelength regime above 600 nm, where we found that the dielectric function of rutile decreases while that of anatase increases with temperature increase.
Topics & Concepts
AnataseBand gapRutileMaterials scienceDielectricDirect and indirect band gapsCondensed matter physicsPhononAnalytical Chemistry (journal)OptoelectronicsChemistryPhotocatalysisPhysicsBiochemistryOrganic chemistryChromatographyCatalysisGas Sensing Nanomaterials and SensorsTransition Metal Oxide NanomaterialsTiO2 Photocatalysis and Solar Cells