Solution Processing and Optical Properties of VO_2 Thermochromic Materials

Among numerous transition-metal semiconductor oxides,vanadium dioxide with various phases is of intense interest and has been extensively investigated for its distinctively optical and electrical properties.VO2 films are usually prepared by vapor-based process.So far no promising solution methods were reported.The direct synthesis of rutile VO2 powders is confirmed to be difficult.In this paper,the state-of-the-art of research on VO2 thermochromic materials is reviewed and some new progress on solution-based synthesis of VO2 films and powders are described.The paper indicates that VO2 thermochromic materials are very interesting and the solution methods are promising to be applied to smart windows.