Improvement of Photoluminescence of Perovskite CH3NH3PbI3 by Adding Additional CH3NH3I during Grinding

被引:4
作者
Qian, Dou-Dou [1 ]
Liu, Lei [1 ]
Xing, Zhi-Xue [2 ,3 ]
Dong, Rui [1 ]
Wu, Li [1 ]
Cai, Hong-Kun [2 ,3 ]
Kong, Yong-Fa [1 ]
Zhang, Yi [2 ,3 ]
Xu, Jing-Jun [1 ]
机构
[1] Nankai Univ, Sch Phys, Minist Educ, Key Lab Weak Light Nonlinear Photon, Tianjin 300071, Peoples R China
[2] Nankai Univ, Coll Elect Informat & Opt Engn, Tianjin 300071, Peoples R China
[3] Nankai Univ, Tianjin Key Lab Photoelect Thin Film Devices & Te, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
LIGHT-EMITTING-DIODES; LEAD HALIDE PEROVSKITES; NANOCRYSTALS; LUMINESCENCE;
D O I
10.1088/0256-307X/38/8/087801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The organic-inorganic hybrid perovskite CH3NH3PbI3 has been a good candidate for many optoelectronic applications such as light-emitting diodes due to its unique properties. Optimizing the optical properties of the CH3NH3PbI3 material to improve the device performance is a hot topic. Herein, a new strategy is proposed to enhance the light emission of CH3NH3PbI3 phosphor effectively. By adding the reactant CH3NH3I powder in an appropriate proportion and simply grinding, the emission intensity of CH3NH3PbI3 is greatly improved. The advantages of the proposed method are swiftness, simplicity and reproducibility, and no requirement for a complex organic ligand. The mechanism of this phenomenon is revealed by x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, photoluminescence, and temperature-dependent photoluminescence. This study offers a unique insight for optimizing the optical properties of halide perovskite materials.
引用
收藏
页数:5
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