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Acid Solution Processed VO2-Based Composite Films with Enhanced Thermochromic Properties for Smart Windows.

ABSTRACT: As a typical thermochromic material, VO2 coatings can be applied to smart windows by modulating the transmission of near infrared (NIR) light via phase transition. However, the inherent undesirable luminous transmittance (Tlum) and solar modulation efficiency (ΔTsol) of pure VO2 impede its practical application. In order to solve this problem, the porous VO2 based composite film was prepared by magnetron sputtering and subsequent acid solution process with Zn2V2O7 particles used as a sacrificial template to create pores, which showed excellent Tlum (72.1%) and enhanced ΔTsol (10.7%) compared with pure VO2 film. It was demonstrated that the porous structure of the film caused by acid solution process could improve the Tlum obviously and the isolated VO2 nanoparticles presented strong localized surface plasmon resonance (LSPR) effects to enhance the ΔTsol. Therefore, this method will provide a facile way to prepare VO2 based films with excellent thermochromic performance and thus promote the application of the VO2 based films in smart windows.

SUBMITTER: Wang Z 

PROVIDER: S-EPMC8434034 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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Acid Solution Processed VO<sub>2</sub>-Based Composite Films with Enhanced Thermochromic Properties for Smart Windows.

Wang Zhe Z   Li Bin B   Tian Shouqin S   Liu Baoshun B   Zhao Xiujian X   Zhou Xuedong X   Tang Gen G   Pang Aimin A  

Materials (Basel, Switzerland) 20210830 17

As a typical thermochromic material, VO<sub>2</sub> coatings can be applied to smart windows by modulating the transmission of near infrared (NIR) light via phase transition. However, the inherent undesirable luminous transmittance (<i>T</i><sub>lum</sub>) and solar modulation efficiency (Δ<i>T</i><sub>sol</sub>) of pure VO<sub>2</sub> impede its practical application. In order to solve this problem, the porous VO<sub>2</sub> based composite film was prepared by magnetron sputtering and subseque  ...[more]

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