材料科学
钙钛矿(结构)
光电子学
兴奋剂
能量转换效率
钝化
纳米晶
掺杂剂
镧系元素
离子
卤化物
载流子
发光
纳米技术
无机化学
化学
结晶学
有机化学
图层(电子)
作者
Bobo Li,Feng Tian,Xiangqian Cui,Boyuan Xiang,Hongbin Zhao,Haixi Zhang,Dengkui Wang,Jinhua Li,Xiaohua Wang,Xuan Fang,Mingxia Qiu,Dongbo Wang
出处
期刊:Nanomaterials
[Multidisciplinary Digital Publishing Institute]
日期:2022-05-23
卷期号:12 (10): 1773-1773
被引量:37
摘要
In recent years, rare-earth metals with triply oxidized state, lanthanide ions (Ln3+), have been demonstrated as dopants, which can efficiently improve the optical and electronic properties of metal halide perovskite materials. On the one hand, doping Ln3+ ions can convert near-infrared/ultraviolet light into visible light through the process of up-/down-conversion and then the absorption efficiency of solar spectrum by perovskite solar cells can be significantly increased, leading to high device power conversion efficiency. On the other hand, multi-color light emissions and white light emissions originated from perovskite nanocrystals can be realized via inserting Ln3+ ions into the perovskite crystal lattice, which functioned as quantum cutting. In addition, doping or co-doping Ln3+ ions in perovskite films or devices can effectively facilitate perovskite film growth, tailor the energy band alignment and passivate the defect states, resulting in improved charge carrier transport efficiency or reduced nonradiative recombination. Finally, Ln3+ ions have also been used in the fields of photodetectors and luminescent solar concentrators. These indicate the huge potential of rare-earth metals in improving the perovskite optoelectronic device performances.
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