光致发光
卤化物
材料科学
量子产额
离子键合
八面体
超分子化学
冠醚
锆
光化学
晶体结构
光电子学
结晶学
化学
无机化学
离子
光学
有机化学
物理
冶金
荧光
作者
Cheng Zhu,Jianbo Jin,Zhen Wang,Zhenpeng Xu,Maria C. Folgueras,Yuxin Jiang,Can Berk Uzundal,Han K.D. Le,Feng Wang,Xiaoyu Zheng,Peidong Yang
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2024-01-05
卷期号:383 (6678): 86-93
被引量:4
标识
DOI:10.1126/science.adi4196
摘要
The metal-halide ionic octahedron is the optoelectronic unit for halide perovskites, and a crown ether-assisted supramolecular assembly approach can pack various ionic octahedra into tunable symmetries. In this work, we demonstrate near-unity photoluminescence quantum yield (PLQY) blue and green emission with the supramolecular assembly of hafnium (Hf) and zirconium (Zr) halide octahedral clusters. (18C6@K)2HfBr6 powders showed blue emission with a near-unity PLQY (96.2%), and green emission was also achieved with (18C6@K)2ZrCl4Br2 powders at a PLQY of 82.7%. These highly emissive powders feature facile low-temperature solution-based synthesis conditions and maintain high PLQY in solution-processable semiconductor inks under ambient conditions, and they were used in thin-film displays and emissive three-dimensional-printed architectures that exhibited high spatial resolution.
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