Strategies to Improve Luminescence Efficiency of Metal-Halide Perovskites and Light-Emitting Diodes

被引:118
作者
Kim, Young-Hoon [1 ]
Kim, Joo Sung [1 ]
Lee, Tae-Woo [1 ]
机构
[1] Seoul Natl Univ, BK21 PLUS SNU Mat Div Educating Creat Global Lead, Dept Mat Sci & Engn, Inst Engn Res,Res Inst Adv Mat,NSI, 1 Gwanak Ro, Seoul 08826, South Korea
基金
新加坡国家研究基金会;
关键词
electroluminescence efficiency; light-emitting diodes; metal-halide perovskite; next-generation emitters; photoluminescence quantum efficiency; METHYLAMMONIUM-LEAD IODIDE; ORGANIC-INORGANIC PEROVSKITE; ORGANOMETAL TRIHALIDE PEROVSKITE; POWER CONVERSION EFFICIENCY; LIGAND-MEDIATED SYNTHESIS; EXCITON BINDING-ENERGY; INDIUM-TIN-OXIDE; HIGHLY EFFICIENT; CH3NH3PBI3; PEROVSKITE; SOLAR-CELLS;
D O I
10.1002/adma.201804595
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Metal-halide perovskites (MHPs) are well suited to be vivid natural color emitters due to their superior optical and electrical properties, such as narrow emission linewidths, easily and widely tunable emission wavelengths, low material cost, and high charge carrier mobility. Since the first development of MHP light-emitting diodes (PeLEDs) in 2014, many researchers have tried to understand the properties of MHP emitters and the limitations to luminescence efficiency (LE) of PeLEDs, and have devoted efforts to increase the LE of MHP emitters and PeLEDs. Within three and half years, PeLEDs have shown rapidly increased LE from external quantum efficiency approximate to 0.1% to approximate to 14.36%. Herein, the factors that limit the LE of PeLEDs are reviewed; the factors are characterized into the following groups: i) photophysical properties of MHP crystals, ii) morphological factors of MHP layers, and iii) problems caused by device architectures. Then, the strategies to overcome those luminescence-limiting factors in MHP emitters and PeLEDs are critically evaluated. Finally, research directions to further increase the LE of MHP emitters and the potential of MHPs as a core component in next-generation displays and solid-state lightings are suggested.
引用
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页数:28
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