文献类型：期刊文献

英文题名：Spray-deposited superhydrophobic KH550-SiO2/PU coating for high-stability CsPbBr3 perovskite films with synergistic self-cleaning and fluorescence properties

作者：Hong, Zhen[1];Xia, Xinyu[1];Hou, Zili[1];Liu, Weiqing[2];Yin, Zuozhu[1];Luo, Yidan[1];Xie, Chan[1];Xue, Mingshan[3]

机构：[1]Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Peoples R China;[2]Nanchang Hangkong Univ, Sch Instrument Sci & Photoelect Engn, Nanchang 330063, Peoples R China;[3]Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Peoples R China

年份：2027

卷号：217

外文期刊名：MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING

收录：SCI-EXPANDED(收录号：WOS:001871408900001)、、WOS

基金：This work was funded by the National Natural Science Foundation of China (62304096 and 12264030) , Jiangxi Provincial Natural Science Foundation (20242BAB25227) .

语种：英文

外文关键词：CsPbBr 3; Polyurethane; Self-cleaning; Fluorescence; SiO2

外文摘要：Inorganic lead halide perovskites (IHPs), particularly CsPbBr3, have shown great promise for optoelectronic applications due to their excellent luminescence. However, their inherent instability under environmental stressors such as moisture, heat, and UV irradiation remains an obstacle to practical use. In this study, a simple and scalable spray-coating strategy was used to fabricate a superhydrophobic composite film that significantly enhances the stability of CsPbBr3 without compromising its optical performance. By employing gamma-aminopropyltriethoxysilane (KH550) as a coupling agent to modify silicon dioxide (SiO2) nanoparticles, their dispersion within a polyurethane (PU) matrix and strengthen the interfacial adhesion through covalent bonding were improved. The resulting KH550-SiO2/PU/CsPbBr3 film exhibits a water contact angle (WCA) of 155.7 +/- 0.3 degrees and a sliding angle (SA) of 3.0 +/- 0.2 degrees, demonstrating excellent superhydrophobicity and self-cleaning capability. More importantly, the composite film retains 82% of its initial fluorescence (FL) intensity after 7 days in a highhumidity environment (98% RH) and maintains structural and functional integrity under thermal treatment (up to 100 degrees C) and prolonged UV exposure. Mechanical tests including water jet impact, abrasion, and tape peeling confirm durability. This work offers a robust and efficient approach to designing stable, multifunctional perovskite-based materials suitable for real-world applications in lighting, displays, and anti-fouling coatings.