期刊
APPLIED SURFACE SCIENCE
卷 283, 期 -, 页码 222-226出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2013.06.085
关键词
Vanadium dioxide; Sol-gel; Anti-reflection coating; Anti-oxidation; Hydrophobicity; Thermochromic material
类别
资金
- Singapore National Research Foundation
- Campus for Research Excellence And Technological Enterprise (CREATE) programme
Vanadium dioxide (VO2) has a great potential to be utilized as solar energy switching glazing, even though there exist some intrinsic problems of low luminous transmittance (T-lurn) and poor oxidation resistance. Si-Al based anti-reflection (AR) sol-gel coatings processed at low temperature have been developed to tackle these issues assisted by adjusting ramping rate and annealing temperature. Si-Al based AR coating gives large relative enhancement on the transmittance (22% for T-lurn, 14% for the whole solar spectrum T-sol,) and successfully maintains IR contrast at 2500 nm wavelength with 18% relative increase in solar modulation (Delta T-sol). The optimized Si-Al based AR coating annealing conditions are recorded at 3 degrees C/min ramping rate and 100 degrees C annealing temperature. Fluorinated-Si based gel offers a new direction of multifunctional overcoat on thermochromic smart windows with hydrophobicity (contact angle 111 degrees), averaged 14% relatively increased luminous transmittance and enhanced oxidation resistance. (C) 2013 Elsevier B.V. All rights reserved.
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