Luminescent hybrid halides with various centering metal cations (Zn, Cd and Pb) and diverse structures

Liubing Fan, Shiqiang Hao, Shihui He, Xusheng Zhang, Mingyang Li, Christopher Wolverton, Jing Zhao*, Quanlin Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Organic-inorganic hybrid metal halides have been extensively studied because of their great potential in optoelectronics. Herein, we report three hybrid metal halides (Bmpip)2ZnBr4, (Bmpip)2CdBr4, and (Bmpip)8Pb11Br30 (where Bmpip+ is 1-butyl-1-methyl-piperidinium, C10H22N+). (Bmpip)2ZnBr4 and (Bmpip)2CdBr4 crystallize in the P21/c space group with zero-dimensional crystal structures with [MBr4]2− (M = Zn, Cd) tetrahedra isolated by Bmpip+. (Bmpip)8Pb11Br30 crystallizes in the triclinic space group P1̄ with one-dimensional corrugated chains constructed from face-sharing [PbBr6]4− octahedra. All of the compounds exhibit excellent ambient and thermal stability. Under UV excitation, all three compounds exhibit very broad emissions. Temperature-dependent photoluminescence measurements indicate that the broad emissions of (Bmpip)2ZnBr4 and (Bmpip)2CdBr4 can be attributed to both the organic cations and self-trapped excitons (STEs) and that the emission of (Bmpip)8Pb11Br30 is assigned to STEs. Density functional theory calculations reveal that the three compounds adopt a direct band gap. This work enriches our understanding of the structure types of hybrid metal halides while revealing their diverse emission mechanisms.

Original languageEnglish (US)
Pages (from-to)5119-5126
Number of pages8
JournalDalton Transactions
Issue number16
StatePublished - Mar 9 2023

ASJC Scopus subject areas

  • Inorganic Chemistry


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