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- Title
Broadband Modulation, Self‐Driven, and Self‐Cleaning Smart Photovoltaic Windows for High Efficiency Energy Saving Buildings.
- Authors
Na, Zongxu; Liang, Xiao; Wang, Hao; Yu, Li; Fan, Chunming; Wang, Qian; Wang, Xianbao; Yang, Huai
- Abstract
Smart photovoltaic windows (SPWs) are an emerging green technology presenting energy‐saving by combining solar irradiance regulation and solar energy harvesting. The SPWs integrating extraordinary energy‐saving performance, stable and controllable operational mode, and diverse functionality are essential for devising high efficiency energy‐saving buildings (ESBs). However, the attainment of such features has yet to be realized in current iterations of SPWs. Herein, a conceptual demonstration of a split‐type broadband modulation, self‐driven, and self‐cleaning SPWs is presented by coupling a silicon solar cell with a multifunctional chromogenic unit (MCU) for creating highly efficient ESBs. Within the multilayer structured MCU, thermal‐responsive polymer stabilized liquid crystal (PSLC) and VO2@SiO2 nanoparticles act as chromic component, enabling broadband light modulation. Thanks to the excellent electrothermal effect of indium tin oxide (ITO), the phase transition of PSLC and VO2@SiO2 nanoparticles can be induced by the electrical power output generated by the silicon solar cell. Therefore, the transparency of SPWs can be manipulated according to the occupant's preference during the daytime. Moreover, a superhydrophobic SiO2 coating provides SPWs with self‐cleaning capability which effectively reduces water resource consumption and eliminates the inconvenience of window cleaning, while providing occupants with a clear view even in complex weather conditions.
- Subjects
ELECTROCHROMIC windows; PHOTOVOLTAIC power systems; ENERGY consumption; SILICON solar cells; ELECTRIC power; POLYMER liquid crystals; BUILDING-integrated photovoltaic systems; ENERGY conservation in buildings
- Publication
Advanced Functional Materials, 2024, Vol 34, Issue 2, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202308312