Self-Template Synthesis of Nanoporous VO2-Based Films: Localized Surface Plasmon Resonance and Enhanced Optical Performance for Solar Glazing Application

Shiwei Long; Xun Cao; Rong Huang; Fang Xu; Ning Li; Aibin Huang; Guangyao Sun; Shanhu Bao; Hongjie Luo; Ping Jin

doi:10.1021/acsami.9b03586

Self-Template Synthesis of Nanoporous VO₂-Based Films: Localized Surface Plasmon Resonance and Enhanced Optical Performance for Solar Glazing Application

ACS Appl Mater Interfaces. 2019 Jun 26;11(25):22692-22702. doi: 10.1021/acsami.9b03586. Epub 2019 Jun 14.

Authors

Shiwei Long¹, Xun Cao, Rong Huang², Fang Xu¹, Ning Li³, Aibin Huang, Guangyao Sun, Shanhu Bao, Hongjie Luo⁴, Ping Jin⁵

Affiliations

¹ University of Chinese Academy of Sciences , Beijing 100049 , China.
² Key Laboratory of Polar Materials and Devices, Ministry of Education , East China Normal University , Shanghai 200241 , China.
³ Department of Materials Science and Engineering , College of Science, China University of Petroleum Beijing , No. 18 Fuxue Road , Beijing 102249 , China.
⁴ School of Materials Science and Engineering , Shanghai University , Shangda Road 99 , Baoshan, Shanghai 200444 , China.
⁵ Materials Research Institute for Sustainable Development , National Institute of Advanced Industrial Science and Technology , Nagoya 463-8560 , Japan.

PMID: 31199111
DOI: 10.1021/acsami.9b03586

Abstract

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 ( T_lum-L) up to 78.0% and the promoted solar modulation ability (Δ 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.

Keywords: LSPR; PTFE; nanoporous; self-template; sputtering; vanadium dioxides; windshield.