A highly visible-transparent thermochromic smart window with broadband infrared modulation for all-season energy savings  

作　　者：Yi Jiang Yunlong Wang Deshuo Kong Zipeng Chen Zhengwei Yang Ningning Cao Haowen Chi Shining Zhu Qiuhong Zhang Jia Zhu Bin Zhu 

机构地区：[1]National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Jiangsu Key Laboratory of Artificial Functional Materials,Frontiers Science Center for Critical Earth Material Cycling,Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China [2]Key Laboratory of High Performance Polymer Material and Technology of MOE,Department of Polymer Science and Engineering,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China

出　　处：《National Science Review》2025年第2期191-201,共11页国家科学评论(英文版)

基　　金：jointly supported by the National Key Research and Development Program of China(2022YFA1404704 and 2020YFA0406104);the National Natural Science Foundation of China(52372197,51925204,52002168);the Natural Science Foundation of Jiangsu Province(BK20231540);the Excellent Research Programme of Nanjing University(ZYJH005);the research foundation of Frontiers Science Center for Critical Earth Material Cycling(14380214);the Fundamental Research Funds for the Central Universities(021314380184,021314380208,021314380190,021314380140 and 021314380150);the State Key Laboratory of New Textile Materials and Advanced Processing Technologies(Wuhan Textile University,FZ2022011);support from the XPLORER PRIZE.

摘　　要：Thermochromic smart windows effectively reduce the energy consumption for buildings through passive light modulation including the transmission of visible(T_(Vis))and near-infrared(TNIR)light,and the emissivity of mid-infrared(ε_(MIR))light in response to ambient temperature change.However,thermochromic windows that maintain high T_(Vis)while modulating TNIR andε_(MIR) simultaneously are highly desirable but sti l l chal lenging.Here,we develop a thermochromic smart window based on a two-way shape memory polymer to enable reversible transformation and achieve TNIR modulation of 44.0%andε_(MIR) modulation of 76.5%while maintaining high T_(Vis)(>50%).Compared to traditional windows based on silica glass,this device shows 4℃lower temperature in summer daytime,2℃higher in winter daytime,and 1℃higher in spring nighttime.It is expected that our device can achieve greater annual energy savings in comparison with commercial glass any w here in the world and promote the progress of thermochromic windows for energy-efficient buildings.

关 键 词：thermochromic smart window visible transparency infrared modulation two-way shape memory polymer 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]