Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance

Liu, Peizhao1,2; Chen, Wei2,3; Wang, Weigao2; Xu, Bing2; Wu, Dan4; Hao, Junjie2; Cao, Wanyu2; Fang, Fan1; Li, Yang1; Zeng, Yuanyuan1; Pan, Ruikun1; Chen, Shuming2; Cao, Wanqiang1; Sun, Xiao Wei2; Wane, Kai2

2017-06-27

10.1021/acs.chemmater.7b00692

CHEMISTRY OF MATERIALS   影响因子和分区

0897-4756

1520-5002

To improve the quality and durability of inorganic halide perovskite nanocrystals (NCs), ammonium halide and lead oxide (PbO) were separately employed for the synthesis of NCs with a tunable ratio of metal to halide. The halide-rich circumstance was therefore successfully set up and found to be beneficial for obtaining good quality NCs with high photoluminescence quantum yields and remarkable stability against purification compared to those qualities of previous regular methods with lead halide. The fabricated light-emitting diode (LED) devices with NCs made in a halide-rich circumstance demonstrated performance better than that of devices with NCs made in a halide-poor circumstance. A LED with CsPbBr3 NCs with a 1:4 Pb:Br ratio showed an obvious improved maximal luminance of 12090 cd m(-2), a current efficiency of 3.1 cd A 1, and an external quantum efficiency of 1.194%, which were much higher than those of devices with NCs synthesized by the regular method.

SCI ; EI

英语

通讯

Shenzhen Innovation Project[JCYJ20160301113356947] ; Shenzhen Innovation Project[KC2014JSQN0011A] ; Shenzhen Innovation Project[JCYJ20150630145302223] ; Shenzhen Innovation Project[JCYJ20160301113537474]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000404493100018

AMER CHEMICAL SOC

20172703874809

Bromine compounds ; Efficiency ; Lead oxide ; Light emitting diodes ; Metal halides ; Nanocrystals ; Perovskite ; Quantum efficiency

Minerals:482.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Production Engineering:913.1 ; Quantum Theory; Quantum Mechanics:931.4

MATERIALS SCIENCE

Web of Science

1.Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
3.Tech Univ Munich, Dept Phys, Lehrstuhl Funkt Mat, D-85748 Garching, Germany
4.Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

Liu, Peizhao,Chen, Wei,Wang, Weigao,et al. Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance[J]. CHEMISTRY OF MATERIALS,2017,29(12):5168-5173.

Liu, Peizhao.,Chen, Wei.,Wang, Weigao.,Xu, Bing.,Wu, Dan.,...&Wane, Kai.(2017).Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance.CHEMISTRY OF MATERIALS,29(12),5168-5173.

Liu, Peizhao,et al."Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance".CHEMISTRY OF MATERIALS 29.12(2017):5168-5173.