Inorganic hybrid perovskite cluster materials: luminescence properties of mesoscale perovskite materials

被引：0
作者：
Xu K. [1 ]
Shi G. [1 ]
Xue D. [1 ]
机构：
[1] Multiscale Crystal Materials Research Center, Institute of Advanced Materials Science and Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Guangdong, Shenzhen
来源：
Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 06期
关键词：
cluster; inorganic hybrid perovskite; luminescence properties; mesoscale; nanostructure; stability; synthesis;
D O I：
10.11949/0438-1157.20220462
中图分类号：
学科分类号：
摘要：
In the mesoscale perovskite material system, perovskite magic sized clusters (PMSCs) have great development prospects and application potential in the field of emerging optoelectronic devices due to their excellent semiconductor properties, such as narrow emission spectral band, high color purity, precise wavelength tunability, uniform particle size distribution, simple solution processing and synthesis process. However, the mesoscale PMSCs are easy to generate perovskite quantum dots (PQDs) with large size during the synthesis process, which is difficult to meet the needs of practical applications. To solve this problem, a simple and controllable ligand-assisted reprecipitation (LAPR) method was used to synthesize inorganic hybrid mesoscale perovskite materials of CsPbBr3 PMSCs, CsPbBr3 PMSCs/CsPbBr3 PQDs mixtures and CsPbBr3 PQDs with different luminescence properties by adjusting the ratio of valeric acid (VA) to oleylamine (OAm) surface ligands. The optical properties, morphological structure, stability and mesoscale structure evolution mechanism of the PQDs and PMSCs were studied and analyzed in detail. It is found that the ratio of surface synergistic passivation ligands VA to OAm is the key to whether the reaction can generate pure-phase CsPbBr3 PMSCs. Moreover, when the surface passivation effect of VA and OAm ligands is optimal, it is easier to generate mesoscale pure-phase CsPbBr3 PMSCs with excellent luminescence properties. © 2022 Chemical Industry Press. All rights reserved.
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页码：2748 / 2756
页数：8
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