Optical properties and switching durability of TiO2 top-coated magnesium-nickel thin-film switchable mirrors

被引：6
作者：
Bao, Shanhu [1 ,2 ]
Zhang, Xiaoli [1 ]
Jin, Ping [1 ,2 ]
Yoshimura, Kazuki [2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Res Ctr Ind Ceram, Shanghai 201800, Peoples R China
[2] Natl Inst Adv Ind Sci & Technol, Mat Res Inst Sustainable Dev, Nagoya, Aichi 4638560, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2015年 / 54卷 / 04期
基金：
中国国家自然科学基金;
关键词：
CYCLING DURABILITY; HYDRIDES; XPS;
D O I：
10.7567/JJAP.54.045501
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An amorphous TiO2 film (180 nm) was deposited as a protective layer on the surface of a triple-layer thin-film switchable mirror (Pd/Ti/Mg4Ni deposited on glass) by a sol-gel coating process, and its optical switching behavior and switching lifetime under 4% hydrogen gas loading were evaluated. The use of a TiO2 coating extended the switching durability to about 1600 cycles, which is a fourfold increase compared with that of uncoated mirrors. The switching response of the Pd/Ti/Mg4Ni thin film was not affected by the presence of the TiO2 film, with hydrogenation and dehydrogenation speeds being almost the same as those of uncoated mirrors. The optical properties of the TiO2-coated mirrors were improved in the hydrogenated state, and a diffuse reflection phenomenon was observed in the dehydrogenated state. (c) 2015 The Japan Society of Applied Physics
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页数：5
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