POE enhanced stabilities of CsPbX_(3)(X=Br,Ⅰ)perovskite and their white LED application  

作　　者：Enrou Mei Jiaming Li Qingyun He Yao Tong Ruowang Liu Hongbin Fan Xiaojuan Liang Weidong Xiang 

机构地区：[1]College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2022年第4期193-200,共8页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(51872207,52072271)。

摘　　要：Perovskite has received extensive attention due to its excellent properties, just like photoelectric, while the instability has always troubled us to the wide application of perovskite materials. Herein, we proposed to use SiO_(2)and POE to encapsulate perovskite nanocrystals(PNCs). In this work, we have successfully prepared a series of perovskite composite materials and films with different concentration ratios.Due to the protection of POE, the luminous intensity of CsPbBr_(3)@POE composite film remained above 90% after stayed in the water for 42 days. The lead concentration of CsPbBr_(3)@POE composite film was 0.8 μg/m L after 48 h of immersing in deionized water. Namely, packaging PNCs in POE could effectively prevent Pb from overflowing reduce Pb pollution. Besides, the composite films showed a wide colour gamut with 117% of NTSC colour gamut, which shows that this composite material has a development prospect in the WLED field.

关 键 词：CsPbX_(3)PNCs SiO_(2) POE ENCAPSULATE WLED 

分 类 号：TN312.8[电子电信—物理电子学] TB383.2[一般工业技术—材料科学与工程]