光致发光
卤化物
锡
兴奋剂
发光
量子产额
材料科学
光化学
激子
金属卤化物
密度泛函理论
掺杂剂
化学
无机化学
光电子学
计算化学
物理
冶金
荧光
光学
凝聚态物理
作者
Jiance Jin,Yuzhen Wang,Kai Han,Zhiguo Xia
标识
DOI:10.1002/anie.202408653
摘要
Abstract Multi‐excitonic emitting materials in luminescent metal halides are emerging candidates for anti‐counterfeiting and information encryption applications. Herein, ATPP 2 SnCl 6 (ATPP=acetonyltriphenylphosphonium) phase was designed and synthesized by rationally choosing emissive organic reagent of ATPPCl and non‐toxic stable metal ions of Sn 4+ , and Sb 3+ was further doped into ATPP 2 SnCl 6 to tune the photoluminescence with external self‐trapped excitons emission. The derived non‐toxic ATPP 2 SnCl 6 shows multi‐excitonic luminescent centers verified by optical study and differential charge‐density from density functional theory calculations. Incorporation of Sb 3+ dopants and the increasing concentrations induce the efficient energy transfer therein, thus enhancing photoluminescence quantum yield from 5.1 % to 73.8 %. The multi‐excitonic emission inspires the creation of information encryption and decryption by leveraging the photoluminescence from ATPPCl to ATPP 2 SnCl 6 host and ATPP 2 SnCl 6 : Sb 3+ . This study facilitates the anti‐counterfeiting application by employing solution‐processable luminescent metal halides materials with excitation‐dependent PL properties.
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