摘要
分别采用VO_2单独烧成工艺以及VO_2与SiO_2共烧成工艺制备了SiO_2/VO_2热致变色涂层,研究了涂层的微观结构、热致变色性能和光学性能。研究结果表明:SiO_2/VO_2涂层的微观结构、热致变色性能和光学性能强烈地依赖于沉积工艺;其微观结构随SiO_2胶体的不同而略有不同,但热致变色性能和光学性能无显著差异;在热致变色性能无明显损失的情况下,采用VO_2单独烧成工艺制备的SiO_2/VO_2涂层的可见光透射性能得到了显著提升;双层膜样品具有良好的综合性能,其近红外光调控率为39.6%,太阳能转换效率为8.4%,25℃下可见光积分透射率与太阳能积分透射率分别为68.4%、72.0%。
SiO2/VO2 thermochromic coatings are prepared via VO2 sintering alone and SiO2/VO2 co-sintering, respectively. The microstructure, thermochromic properties and optical properties of samples are studied. The experimental results show that both the microstructure and the above properties of the coatings are strongly dependent on the deposition process, whereas the type of SiO2 precursor sols only have little effect on the microstructure and even less effect on the thermochromic and optical properties. When the coatings are prepared by the VO2 alone-sintering routine, the SiO2/VO2 coatings obtain high transmittance under the condition of slight loss in thermochromic properties. The double-layer coating sample exhibited good comprehensive performance, its near infrared switching rate at 2000 nm value is 39.6%, the solar energy modulation value is 8.4%, and the integral visible transmittance and the integral solar transmittance at 25 ℃ are 68.4% and 72.0%, respectively.
作者
刘鹏
梁丽萍
徐耀
Liu Peng;Liang Liping;Xu Yao(Institute of Materials Science and Engineering, Taiyuan University of Science and Technology,Taiyuan, Shanxi 030024, China;State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics andPrecision Mechanics, Chinese Academy of Sciences, Xi'an , Shaanxi 710000, China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2019年第4期317-324,共8页
Acta Optica Sinica
关键词
薄膜
热致变色
VO2
SiO2
溶胶凝胶
智能窗
thin films
thermochromism: vanadium dioxide
silicon dioxide
double-layer coating: smart window
