液晶
材料科学
玻璃
光伏系统
透射率
光电子学
液晶显示器
下降(电信)
光学
计算机科学
电气工程
复合材料
电信
物理
工程类
作者
Sadiara Fall,Jing Wang,Thomas Regrettier,Nicolas Brouckaert,Olzhas A. Ibraikulov,Nicolas Leclerc,Yaochen Lin,Mohammed Ibn Elhaj,L. Komitov,P. Lévêque,Yuhan Zhong,Martin Brinkmann,Malgosia Kaczmarek,T. Heiser
标识
DOI:10.1021/acsami.2c21727
摘要
Dynamic windows allow monitoring of in-door solar radiation and thus improve user comfort and energy efficiency in buildings and vehicles. Existing technologies are, however, hampered by limitations in switching speed, energy efficiency, user control, or production costs. Here, we introduce a new concept for self-powered switchable glazing that combines a nematic liquid crystal, as an electro-optic active layer, with an organic photovoltaic material. The latter aligns the liquid crystal molecules and generates, under illumination, an electric field that changes the molecular orientation and thereby the device transmittance in the visible and near-infrared region. Small-area devices can be switched from clear to dark in hundreds of milliseconds without an external power supply. The drop in transmittance can be adjusted using a variable resistor and is shown to be reversible and stable for more than 5 h. First solution-processed large-area (15 cm2) devices are presented, and prospects for smart window applications are discussed.
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