Cooperative coupling of anisotropic phonon modes intensifies visible thermochromism in layered α-MoO<sub>3</sub>
Youngkwang Kim, Jun Ho Lee, Young Hwa Jung, Donghwa Lee, Junwoo Son
Abstract
] octahedra are responsible for the band gap reduction at high temperature; this defies the general belief regarding the origin of visible thermochromism in layered oxides as the modulation of a van der Waals inter-layer distance. These original results can aid the development of a new strategy to further intensify high-temperature thermochromism by anion doping for highly sensitive temperature-indicating applications.
Topics & Concepts
ThermochromismMaterials sciencePhononBand gapRaman spectroscopyAnisotropyCondensed matter physicsDiffractionAbsorption edgeOptoelectronicsCrystallographyOpticsChemistryPhysicsTransition Metal Oxide NanomaterialsPerovskite Materials and ApplicationsAdvanced Photocatalysis Techniques