In Situ Growth of CsPbBr3 Perovskite Nanocrystals in Lead-Based Matrix toward Significantly Enhanced Water/Photo Stabilities

被引:9
|
作者
Lou, Sunqi [1 ]
Huang, Lin [1 ]
Liu, Bomei [1 ]
Si, Shuaichen [1 ]
Xuan, Tongtong [4 ]
Lan, Bang [2 ]
Zhang, Jinhui [3 ]
Li, Manrong [1 ]
Wang, Jing [2 ]
机构
[1] Sun Yat Sen Univ, Minist Educ, Sch Mat Sci & Engn,Key Lab Bioinorgan & Synthet C, State Key Lab Optoelect Mat & Technol,Sch Chem, Guangzhou 510275, Peoples R China
[2] Jiaying Univ, Guangdong Engn Technol Developing Ctr High Perfor, Meizhou Micronano Elect Mat R&D Platform, Sch Chem & Environm, Meizhou 514015, Peoples R China
[3] Foshan NationStar Optoelect Co Ltd, Guangdong Prov Key Lab Semicond Micro Display, Foshan, Peoples R China
[4] Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China
来源
ADVANCED OPTICAL MATERIALS | 2022年 / 10卷 / 01期
基金
中国国家自然科学基金; 中国博士后科学基金; 国家重点研发计划;
关键词
composites; nanocrystals; organometallic compounds; perovskites; stability; LIGHT-EMITTING-DIODES; QUANTUM; DEGRADATION;
D O I
10.1002/adom.202101448
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Perovskite nanocrystals (NCs) are considered as the next-generation platforms for optoelectronic applications, but their poor stability greatly restricts their development. Here, we present a facile composite strategy to synthesize highly stable CsPbBr3/Pb-MA composite by in situ embedding the CsPbBr3 NCs in a C16H14Br2O6Pb2 (Pb-MA) organometallic compound (MOC). The CsPbBr3/Pb-MA composite powders show intense green emission at 519 nm, with a photoluminescence quantum yield of about 48.5% and a full width at half-maximum of about 17 nm. More interestingly, benefitted from the protection of MOC, the CsPbBr3/Pb-MA composites can maintain 43% and 83% of initial intensity after being illuminated under blue light for 36 h and being immersed in water for 192 h, respectively. Compared to the original CsPbBr3 NCs, the light/water stability of CsPbBr3/Pb-MA composites is enhanced by about 40 and 700 times (the PL intensities maintain at about 60% of the initial one), respectively. As a proof-of-concept, the as-fabricated devices exhibit a wide color gamut, 97.7% and 98.2% of Rec. 2020 for white light-emitting diodes and laser diodes, respectively. These findings demonstrate that the combination of MOC and perovskite NCs is an optimized strategy for the exploitation of high-performance perovskite composites for their future optoelectronic applications.
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页数:8
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