TY - JOUR
T1 - A cost-effective process to prepare VO2 (M) powder and films with superior thermochromic properties
AU - Xiao, Xiudi
AU - Zhang, Hua
AU - Chai, Guanqi
AU - Sun, Yaoming
AU - Yang, Tao
AU - Cheng, Haoliang
AU - Chen, Lihua
AU - Miao, Lei
AU - Xu, Gang
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (no. 51102235 ) and Strategic New Industry Core Technology Research Project of Guangdong Province (no. 2011A032304003 ) and CAS Key Laboratory of Renewable Energy and Gas Hydrate (no. KLREGHy007k6 ) and CAS Key Laboratory of Inorganic Coating materials (no. KLICM-2010-05 ) and Director Innovation fund of GIEC (no. y007r21001 ) and State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology) (no. SYSJJ2013-04 ) and The Pearl River Star of Science and Technology.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/3
Y1 - 2014/3
N2 - VO2 powder with superior phase transition performance was prepared by convenient thermolysis method. The results illustrated that VO 2 powder show high purity and crystallinity. VO2 particles are transformed from cluster to quasi-sphere with the increase of annealing temperature. The DSC analysis proves that VO2 show superior phase transition performance around 68 C. The phase transition temperature can be reduced to 33.5 C by 1.8 at% tungsten doping. The maximum decreasing efficiency of phase transition temperature is about -30 K/at% with w = 0.4 at%. After mixing VO2 powder with acrylic resin, the maximal visible transmission of the composite thin films on glass is 48% and the transmission modulation at 2000 nm is 37.3% with phase transition temperature of 66.2 C. Though the phase transition performance is weakened by tungsten doping, the film prepared by 1.3 at% tungsten doped VO2 still show superior transmission modulation about 26.4% at 2000 nm, which means that it is a potential candidate as smart windows.
AB - VO2 powder with superior phase transition performance was prepared by convenient thermolysis method. The results illustrated that VO 2 powder show high purity and crystallinity. VO2 particles are transformed from cluster to quasi-sphere with the increase of annealing temperature. The DSC analysis proves that VO2 show superior phase transition performance around 68 C. The phase transition temperature can be reduced to 33.5 C by 1.8 at% tungsten doping. The maximum decreasing efficiency of phase transition temperature is about -30 K/at% with w = 0.4 at%. After mixing VO2 powder with acrylic resin, the maximal visible transmission of the composite thin films on glass is 48% and the transmission modulation at 2000 nm is 37.3% with phase transition temperature of 66.2 C. Though the phase transition performance is weakened by tungsten doping, the film prepared by 1.3 at% tungsten doped VO2 still show superior transmission modulation about 26.4% at 2000 nm, which means that it is a potential candidate as smart windows.
KW - A. Optical materials
KW - D. Optical properties
KW - D. Phase transitions
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U2 - 10.1016/j.materresbull.2013.11.051
DO - 10.1016/j.materresbull.2013.11.051
M3 - Article
AN - SCOPUS:84890286037
SN - 0025-5408
VL - 51
SP - 6
EP - 12
JO - Materials Research Bulletin
JF - Materials Research Bulletin
ER -