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Issue 38, 2016
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Crystallized TiO2 (A)–VO2 (M/R) nanocomposite films with electrochromism–thermochromism dual-response properties

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Abstract

Thermochromic (TC) and electrochromic (EC) smart windows are the mostly studied categories of smart window, but they usually work in different wavebands, and each have their own advantages. This work offers a method to combine the advantages of TC and EC smart windows by synthesizing TC–EC dual-response TiO2–VO2 nanocomposite films. These films were prepared by dispersing VO2 nanoparticles (NPs) in TiO2 sols and then underwent annealing. The optimized film showed a luminous transmittance (Tlum) of 66.1% at 20 °C, 59.3% at 90 °C and a ΔTsol of 11.2%. By applying a voltage of −5 V, the film showed an EC transmittance modulation (ΔT) of 19.1% at 630 nm, a combined performance of Tlum = 44.7% and ΔTsol = 17.1% (increased by 52%). The color of the films could also be modified from a yellowish brown to a light blue, which is meaningful for practical usage. The current TiO2–VO2 nanocomposite film combines TC and EC performance, which may be an important breakthrough in energy saving smart windows.

Graphical abstract: Crystallized TiO2 (A)–VO2 (M/R) nanocomposite films with electrochromism–thermochromism dual-response properties

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Publication details

The article was received on 03 Mar 2016, accepted on 15 Mar 2016 and first published on 30 Mar 2016


Article type: Paper
DOI: 10.1039/C6RA05700D
Citation: RSC Adv., 2016,6, 32176-32182
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    Crystallized TiO2 (A)–VO2 (M/R) nanocomposite films with electrochromism–thermochromism dual-response properties

    F. Yang, X. Shi, Z. Chen, D. Ma, Y. Wu, H. Luo and Y. Gao, RSC Adv., 2016, 6, 32176
    DOI: 10.1039/C6RA05700D

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