Zero-Dimensional Organic–Inorganic Hybrid Indium Chlorides with Intrinsic Blue Light Emissions
Yue‐Yu Ma, Han‐Qi Fu, Xue‐Lei Liu, Yu‐Ming Sun, Qian‐Qian Zhong, Wenjie Xu, Xiao‐Wu Lei, Guodong Liu, Cheng‐Yang Yue
Abstract
Considering low photoluminescence quantum yield (PLQY < 5%) of blue emissive CsPbCl3 bulk crystal and the high toxicity of Pb2+, it is significant to explore new single crystalline lead-free perovskites with highly efficient blue light emission. Herein, two new zero-dimensional (0D) hybrid indium halides of [H2EP]2InCl6·Cl·H2O·C3H6O and [H3AEP]InCl6··H2O (EP = 1-ethylpiperazine, AEP = N-aminoethyl piperazine) were prepared. Remarkably, these 0D indium halides display unusual blue light emissions (about 430 nm) with a highest PLQY of 13.44%. To the best of our knowledge, this work represents one of the first higher energy blue light emitters in hybrid indium perovskites, which would advance the research on lead-free hybrid halides for next-generation luminescent materials.