Bluish-white-light-emitting diodes based on two-dimensional lead halide perovskite (C6H5C2H4NH3)2PbCl2Br2

被引：63
作者：
Cai, Peiqing [1 ,2 ,3 ,4 ]
Wang, Xiangfu [1 ,2 ,3 ,4 ]
Seo, Hyo Jin [3 ,4 ]
Yan, Xiaohong [1 ,2 ,5 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Microelect, Nanjing 210023, Jiangsu, Peoples R China
[3] Pukyong Natl Univ, Dept Phys, Busan 608737, South Korea
[4] Pukyong Natl Univ, Interdisciplinary Program Biomed Mech & Elect Eng, Busan 608737, South Korea
[5] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2018年 / 112卷 / 15期
基金：
中国国家自然科学基金; 新加坡国家研究基金会;
关键词：
MULTIPLE-QUANTUM WELLS; HYBRID PEROVSKITES; OPTICAL-PROPERTIES; EMISSION; PHOTOLUMINESCENCE; SEMICONDUCTORS; DEPENDENCE; EMITTERS; LENGTHS; BR;
D O I：
10.1063/1.5023797
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Bluish-white-light-emitting diodes (BWLEDs) are designed based on the two-dimensional mixed halide perovskite (C6H5C2H4NH3)(2)PbCl2Br2 at room temperature. Bluish-white electroluminescence devices were fabricated by a spin-coating method. The BWLEDs can be turned on at 4.9 V and depict a maximum luminance of similar to 70 cd/m(2) at 7 V. Low and room temperature photoluminescence spectra show the coexistence of free exciton and self-trapped exciton luminescence in a deformable lattice. The strategy of achieving white electroluminescence (EL) from mixed halide perovskite reported here can be applied to other two-dimensional perovskites to increase the optoelectronic efficiency of the device in the future. Published by AIP Publishing.
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页数：5
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