云母基VO_2薄膜光学开关及变色性能研究(英文)  

Optical Switching and Color Changing Properties of VO_2 Films on Muscovite Substrate

作　　者：罗蓉蓉[1] 何鹏[1] 黄婉霞[1] 颜家振[1] 蔡靖涵[1] 

机构地区：[1]四川大学,四川成都610065

出　　处：《稀有金属材料与工程》2012年第8期1327-1330,共4页Rare Metal Materials and Engineering

摘　　要：采用溶胶凝胶及后退火工艺制备云母基底的二氧化钒薄膜,采用XRD、SEM、FTIR及色差研究薄膜的性能。FTIR结果表明:在金属-半导体相变过程中,薄膜在红外光区的透过率变化为77%;变色性能显示相变时薄膜从低温的黄褐色变为高温黄绿色,色差E*随温度的变化规律与光学开关性能类似,色差E*在相变过程中的最大值为11.31。VO2 films on muscovite substrate were fabricated by inorganic sol-gel method and the following thermal treatment.The films were characterized by X-ray diffraction,scanning electron microscope（SEM）,fourier transform infrared spectrophotometer（FTIR） and color difference（E＊）.The FTIR result shows that the film has an infrared transmittance switching efficiency of 77% in the metal-insulator transition.The color changing properties indicate that the film color reversibly changes from khaki to yellow-green as the temperature changes.The relationship between E＊ and the temperature presents a hysteresis loop,which is in accordance with the infrared optical switching properties.The maximum of E＊ during the film metal-insulator transition is 11.31.

关 键 词：光学开关 变色 二氧化钒薄膜 热致变色 

分 类 号：O484.4[理学—固体物理]