期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 25, 页码 22692-22702出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b03586
关键词
sputtering; vanadium dioxides; PTFE; self-template; nanoporous; LSPR; windshield
资金
- National Natural Science Foundation of China (NSFC) [51572284]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [2018288]
- Science Foundation for Youth Scholar of State Key Laboratory of High-Performance Ceramics and Superfine Microstructures [SKL201703]
- Shanghai Pujiang Program [18PJD051]
- Key Research and Development Plan of Anhui Province [1804a09020061]
Poly(tetrafluoroethylene) (Teflon) has been selected as the self-template structural material in the preparation of VO2 films using a reactive magnetron sputtering method and post-annealing process. VO2 films with spontaneous random nanoporous structures growing on quartz glasses have been deliberately established via bottom-up processing through this novel and facile approach. The nanoporous VO2 films exhibit an excellent optical performance based on the localized surface plasmon resonance, with ultrahigh luminous transmittance (Tlum-L) up to 78.0% and the promoted solar modulation ability (Delta T-sol) of 14.1%. Meanwhile, the ingenious microstructure of the film provides an antireflection function from multiple perspectives on visible light and indicates the potential of the windshield on vehicles for smart solar modulation. The nanoporous films expand the practical application of thermochromic VO2 to a fire-new field, breaking the optical performance envelope of the single-layer dense VO2 film away, and offering a universal method to prepare homogeneous nanoporous structures for thin films.
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