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智能窗用热致变色SiO2/VO2双层膜的制备与性能

Preparation and Characteristics of SiO2/VO2 Double-Layer Thermochromic Coatings for Smart Window

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摘要

分别采用VO2单独烧成工艺以及VO2与SiO2共烧成工艺制备了SiO2/VO2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:SiO2/VO2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SiO2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VO2单独烧成工艺制备的SiO2/VO2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%。

Abstract

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.

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中图分类号:O439

DOI:10.3788/aos201939.0416001

所属栏目:材料

收稿日期:2018-11-01

修改稿日期:2018-11-27

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作者单位    点击查看

刘鹏:太原科技大学材料科学与工程学院, 山西 太原 030024
梁丽萍:太原科技大学材料科学与工程学院, 山西 太原 030024
徐耀:中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室, 陕西 西安 710000

联系人作者:刘鹏(liupeng3315@stu.tyust.edu.cn); 梁丽萍(liangliping@tyust.edu.cn); 徐耀(xuyao@opt.ac.cn);

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引用该论文

Liu Peng,Liang Liping,Xu Yao. Preparation and Characteristics of SiO2/VO2 Double-Layer Thermochromic Coatings for Smart Window[J]. Acta Optica Sinica, 2019, 39(4): 0416001

刘鹏,梁丽萍,徐耀. 智能窗用热致变色SiO2/VO2双层膜的制备与性能[J]. 光学学报, 2019, 39(4): 0416001

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