Efficient Thermally Evaporated Near-Infrared Perovskite Light-Emitting Diodes via Phase Regulation

被引：0
作者：
Siwei He [1 ]
Lanxin Qin [2 ]
Zhengzheng Liu [3 ]
Jae-Wook Kang [4 ]
Jiajun Luo [2 ]
Juan Du [1 ]
机构：
[1] Hangzhou Institute for Advanced Study,School of Physics and Optoelectronic Engineering
[2] University of Chinese Academy of Sciences,Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information
[3] Huazhong University of Science and Technology (HUST),State Key Laboratory of Ultra
[4] Chinese Academy of Sciences,intense Laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics
[5] LANL-JBNU Engineering Institute-Korea,Department of Flexible and Printable Electronics
[6] Jeonbuk National University,undefined
来源：
Nano-Micro Letters | 2025年 / 17卷 / 1期
关键词：
Vacuum-deposited perovskite; Near-infrared emission; Phase regulation; Co-evaporation; Electroluminescence;
D O I：
10.1007/s40820-025-01776-3
中图分类号：
学科分类号：
摘要：
α-phase formamidinium lead triiodide (FAPbI3) was prepared based on triple-source co-evaporation.A partial Cs-doping in the FAPbI3 can help with the suppression of the non-radiative recombination, elimination of the metallic Pb, improvement of spatial confinement.Near-infrared perovskite light-emitting diodes (NIR-PeLEDs) based on triple-source co-evaporated FACsPbI3 thin films achieved a maximum external quantum efficiency of 10.25%, which was around 6 times higher than that of FAPbI3-based NIR-PeLEDs.
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