Open AccessAll‐Inorganic Manganese‐Based CsMnCl 3 Nanocrystals for X‐Ray Imaging
Author(s) -
Guan LinQuan,
Shi Shuo,
Niu XiaoWei,
Guo ShiChen,
Zhao Jian,
Ji TianMeng,
Dong Hao,
Jia FengYan,
Xiao JiaWen,
Sun LingDong,
Yan ChunHua
Publication year - 2022
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202201354
Subject(s) - radioluminescence , photoluminescence , materials science , nanocrystal , perovskite (structure) , nanomaterials , halide , manganese , band gap , optoelectronics , quantum yield , absorption (acoustics) , light emitting diode , nanotechnology , optics , inorganic chemistry , chemistry , scintillator , crystallography , physics , detector , metallurgy , composite material , fluorescence
Lead‐based halide perovskite nanomaterials with excellent optical properties have aroused great attention in the fields of solar cells, light‐emitting diodes, lasing, X‐ray imaging, etc. However, the toxicity of lead prompts researchers to develop alternatives to cut down the usage of lead. Herein, all‐inorganic manganese‐based perovskite derivatives, CsMnCl 3 nanocrystals (NCs), with uniform size and morphology have been synthesized successfully via a modified hot‐injection method. These NCs have a direct bandgap of 4.08 eV and a broadband emission centered at 660 nm. Through introducing modicum lead (1%) into the CsMnCl 3 NCs, the photoluminescence intensity greatly improves, and the quantum yield (PLQY) increases from 0.7% to 21%. Furthermore, the CsMnCl 3 :1%Pb NCs feature high‐efficiency of X‐ray absorption and radioluminescence, which make these NCs promising candidates for X‐ray imaging.