Metal–Halide Perovskite Nanocrystal Superlattice: Self‐Assembly and Optical Fingerprints

Author:

Liu Zhuang12,Qin Xian2,Chen Qihao3,Jiang Tianci3,Chen Qiushui3,Liu Xiaogang12ORCID

Affiliation:

1. Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China

2. Department of Chemistry National University of Singapore Singapore 117543 Singapore

3. MOE Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety College of Chemistry Fuzhou University Fuzhou 350002 China

Abstract

AbstractSelf‐assembly of nanocrystals into superlattices is a fascinating process that not only changes geometric morphology, but also creates unique properties that considerably enrich the material toolbox for new applications. Numerous studies have driven the blossoming of superlattices from various aspects. These include precise control of size and morphology, enhancement of properties, exploitation of functions, and integration of the material into miniature devices. The effective synthesis of metal–halide perovskite nanocrystals has advanced research on self‐assembly of building blocks into micrometer‐sized superlattices. More importantly, these materials exhibit abundant optical features, including highly coherent superfluorescence, amplified spontaneous laser emission, and adjustable spectral redshift, facilitating basic research and state‐of‐the‐art applications. This review summarizes recent advances in the field of metal–halide perovskite superlattices. It begins with basic packing models and introduces various stacking configurations of superlattices. The potential of multiple capping ligands is also discussed and their crucial role in superlattice growth is highlighted, followed by detailed reviews of synthesis and characterization methods. How these optical features can be distinguished and present contemporary applications is then considered. This review concludes with a list of unanswered questions and an outlook on their potential use in quantum computing and quantum communications to stimulate further research in this area.

Funder

National Research Foundation Singapore

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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