首页|Chiral induction and Sb3+doping in indium halides to trigger second harmonic generation and circularly polarized luminescence
Chiral induction and Sb3+doping in indium halides to trigger second harmonic generation and circularly polarized luminescence
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Recently,organic-inorganic hybrid metal halides(HMHs)have attracted extensive attention as promis-ing multifunctional materials by virtue of their structural diversity and tunable photophysical properties.However,it remains a challenge to design HMHs with specific functions on demand.Herein,by introduc-ing R/S-methylbenzylamine(R/S-MBA)and doping Sb3+,we have achieved both second harmonic gen-eration(SHG)and circularly polarized luminescence(CPL)properties in lead-free indium halides.The introduction of chiral organic cations can break the symmetry and induce the indium halides to crys-tallize in the chiral space group.The Sb3+with ns2 electronic configuration can serve as the dopants to promote the formation of self-trapped excitons,so as to activate highly efficient luminescence.As a re-sult,the as-prepared Sb3+doped(R/S-MBA)3InCl6 show not only SHG responses but also CPL signals with luminescence dissymmetry factor of-5.3 × 10-3 and 4.7 × 10-3.This work provides a new inspiration for the exploitation of chiral multifunctional materials.
Hybrid metal halidesSelf-trapped excitonsChiral inductionSecond-harmonic generationCircularly polarized luminescence
State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors,Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology),Nanjing University of Posts & Telecommunications(NJUPT),Nanjing 210023,China
School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China
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