Sb3+doping enables efficient self-trapped emission of tin(Ⅳ)-based metal halides
ZHENG Yongzhuo
ZHANG Wanxu
LIU Mei
WEI Wenqing
WANG Juan
GUO Fengwan
Abstract：A novel zero-dimensional organic-inorganic hybrid metal halide C8H14N2SnCl6(where C8H12N2 represents 4-(ethylaminomethyl)pyridine)was synthesized by a reduced temperature crystallization method with a photoluminescence quantum yield of 4.30％at room temperature.Subsequently,C8H14N2SnCl6:Sb was ob-tained by introducing Sb3+with 5s2 lone pair of electrons,which showed stable and efficient orange-red broadband emission at 680 nm,with a Stokes shift of 335 nm,a quantum yield as high as 63.14％and good stability in air and thermal conditions.Theoretical calculations and research analyses show that the efficient broadband emission of C8H14N2SnCl6:Sb is attributed to self-trapped exciton(STE)emission.This work proposes an effective doping pathway to achieve efficient self-trapped emission,and explores the potential of tin(Ⅳ)-based metal halides in orange-red phosphors.
Keywords：tin-based metal halidephotoluminescenceantimony dopedefficient self-trapped emission
Publication Date：2025-08-01
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：9( 535-542,后插1-后插14 )