Durability of VO2-based thin films at elevated temperature: Towards thermochromic fenestration

被引：9

作者：

Ji, Yu-Xia ^{[1
]}

Niklasson, Gunnar A. ^{[1
]}

Granqvist, Claes G. ^{[1
]}

机构：

[1] Uppsala Univ, Dept Engn Sci, Angstrom Lab, SE-75121 Uppsala, Sweden

来源：

INERA WORKSHOP: TRANSITION METAL OXIDE THIN FILMS-FUNCTIONAL LAYERS IN SMART WINDOWS AND WATER SPLITTING DEVICES. PARALLEL SESSION OF THE 18TH INTERNATIONAL SCHOOL ON CONDENSED MATTER PHYSICS | 2014年 / 559卷

关键词：

INSULATOR-TRANSITION; OXIDE;

D O I：

10.1088/1742-6596/559/1/012005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An explorative study was performed on sputter-deposited thermochromic VO2 films with top coatings of Al oxide and Al nitride. The films were exposed to dry air at a high temperature. Bare 80-nm-thick VO2 films rapidly converted to non-thermochromic V2O5 under the chosen conditions. Al oxide top coatings protected the underlying VO2 films and, expectedly, increased film thickness yielded improved protection. Specifically, it was found that a 30-nm-thick sputter-deposited Al oxide top coating delayed the oxidation by more than one day upon heating at 300 degrees C. The results demonstrate the importance of protective layers in thermochromic windows for practical application.

引用

页数：5

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