Multicomponent Organic Metal Halide Hybrid with White Emissions
Liang‐Jin Xu, Sujin Lee, Xinsong Lin, Logan Ledbetter, Michael Worku, Haoran Lin, Chenkun Zhou, He Liu, Anna Plaviak, Biwu Ma
Abstract
Abstract Zero‐dimensional (0D) organic metal halide hybrids, in which organic and metal halide ions cocrystallize to form neutral species, are a promising platform for the development of multifunctional crystalline materials. Herein we report the design, synthesis, and characterization of a ternary 0D organic metal halide hybrid, (HMTA) 4 PbMn 0.69 Sn 0.31 Br 8 , in which the organic cation N ‐benzylhexamethylenetetrammonium (HMTA + , C 13 H 19 N 4 + ) cocrystallizes with PbBr 4 2− , MnBr 4 2− , and SnBr 4 2− . The wide band gap of the organic cation and distinct optical characteristics of the three metal bromide anions enabled the single‐crystalline “host–guest” system to exhibit emissions from multiple “guest” metal halide species simultaneously. The combination of these emissions led to near‐perfect white emission with a photoluminescence quantum efficiency of around 73 %. Owing to distinct excitations of the three metal halide species, warm‐ to cool‐white emissions could be generated by controlling the excitation wavelength.