Thermosensitive poly(N-vinylcaprolactam) as a transmission light regulator in smart windows

被引：66

作者：

Sala, Renata L. ^{[1
]}

Goncalves, Ricardo H. ^{[1
]}

Camargo, Emerson R. ^{[1
]}

Leite, Edson R. ^{[1
,2
]}

机构：

[1] Fed Univ Sao Carlos UFSCar, Dept Chem, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP, Brazil

[2] CNPEM, Brazilian Nanotechnol Natl Lab LNNano, Rua Giusepe Maximo Scalfaro 10000, BR-13083970 Campinas, SP, Brazil

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2018年 / 186卷

基金：

巴西圣保罗研究基金会;

关键词：

Switchable devices; Thermosensitive polymer; Joule heating; Stimuli-sensitive materials; Transparent conducting substrates; N-VINYLCAPROLACTAM; VINYL-ACETATE; SOLAR; TEMPERATURE; EFFICIENT; HYDROGEL; BEHAVIOR; COPOLYMERIZATION; MACROMOLECULES; SURFACTANT;

D O I：

10.1016/j.solmat.2018.06.037

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Upcoming generation of smart windows requires simple design, fast stimulus response and cost-effective production. Aiming these features, we reported a new approach of switchable devices based on the thermosensitive polymer poly(N-vinylcaprolactam) (PNVCL) and facile assembly of the components (FTO layers and polymer). Its optical/color change from transparent to opaque is temperature-dependent and activated by induced Joule heating of conductive substrates. Therefore, the reported devices showed fast reversible response (less than 60 s) by small input power and adjustable opaqueness according to polymer concentration. In opposite to traditional electrochromic smart windows dependence of the kinetics charge-transfer reaction, the observed features are triggered by the thermodynamic mechanism of the reversible coil-globule transition from PNVCL suspension, which can lead to stable performance of the proposed device.

引用

页码：266 / 272

页数：7

共 53 条

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