Supramolecular assembly of blue and green halide perovskites with near-unity photoluminescence

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-01-04 DOI:10.1126/science.adi4196

Cheng Zhu, Jianbo Jin, Zhen Wang, Zhenpeng Xu, Maria C. Folgueras, Yuxin Jiang, Can B. Uzundal, Han K. D. Le, Feng Wang, Xiaoyu (Rayne) Zheng, Peidong Yang

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引用次数: 0

Abstract

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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具有近均一光致发光的蓝色和绿色卤化物过氧化物超分子组装。

金属卤化物离子八面体是卤化物包晶的光电单元，冠醚辅助的超分子组装方法可以将各种离子八面体组装成可调整的对称体。在这项工作中，我们利用卤化铪（Hf）和卤化锆（Zr）八面体簇的超分子组装，展示了近乎统一光致发光量子产率（PLQY）的蓝色和绿色发射。(18C6@K)2HfBr6粉末显示出蓝色发射，PLQY接近统一（96.2%），(18C6@K)2ZrCl4Br2粉末也实现了绿色发射，PLQY为82.7%。这些高发射粉末的特点是易于在低温溶液条件下合成，并能在环境条件下在可溶液加工的半导体油墨中保持较高的PLQY，它们被用于薄膜显示器和显示高空间分辨率的发射型三维印刷架构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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