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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2012年第8期1327-1330,共4页
Rare Metal Materials and Engineering
关键词
光学开关
变色
二氧化钒薄膜
热致变色
optical switching
color changing
VO2 films
thermochromism
