am8b10790_si_002.avi (7.01 MB)
Pairing of Luminescent Switch with Electrochromism for Quasi-Solid-State Dual-Function Smart Windows
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posted on 2018-08-23, 00:00 authored by Zhenguang Wang, Minshen Zhu, Siyu Gou, Zhou Pang, Yue Wang, Yibo Su, Yang Huang, Qunhong Weng, Oliver G. Schmidt, Jianzhong XuSmart
window is a promising green technology with feature of tunable
transparency under external stimuli to manage light transmission and
solar energy. However, more functions based on the intelligent management
of the solar spectrum need to be integrated into present smart windows.
In this work, a dual-function smart window is fabricated by pairing
the luminescent switch with the electrochromic window. The dual function
is based on a single fluorine doped tin oxide coated glass functionalized
with tungsten oxide and copper nanocluster, among which tungsten oxide
serves as an electrochromic material and copper nanocluster provides
photoinduced luminescence. Along with the regulation of the visible
light based on the electrochromism of the window, the luminescence
can be finely switched on and off, which establishes a pair of reversible
states (“on” and “off”) for the dual-function
smart window. The contrast between two states reaches 88%. Furthermore,
the manipulation of dual-function smart window is highly reversible
with a short response time of 12.6 s. This prototype of dual-function
smart window paves the way for developing multifunctional smart windows
by integrating different functional materials into one smart window
based on the rational management of the solar spectrum.