Theoretical study of vanadium oxide components effect on phase transition temperature

Abstract

Vanadium dioxide is a kind of thermotropic phase transition material with the nearest phase transition temperature to the room temperature, which can be used in the laser protection area and Uncooled Microbolometer. VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> is prepared on ZnSe by magnetron sputtering method, and the optical character changing of different components vanadium oxide thin films are tested by Nicolet 8700 IR spectrometer. Some phenomena are observed. Because different components have different phase transition character, their phase transition temperatures are all lower than vanadium dioxide's 68°C. The energy band structure of vanadium oxide molecule is calculated by Material Studio, and the theoretic calculation explains how the components affect the phase transition temperature. Control the components of vanadium oxide by annealing, then adjust the phase transition temperature, and a new technique which changing the phase transition temperature without doping was found.