• Advanced Photonics
  • Vol. 2, Issue 5, 054001 (2020)
Zengle Cao1、†, Fengrui Hu1, Chunfeng Zhang1, Shining Zhu1, Min Xiao1、2, and Xiaoyong Wang1、*
Author Affiliations
  • 1Nanjing University, College of Engineering and Applied Sciences, School of Physics, Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing, China
  • 2University of Arkansas, Department of Physics, Fayetteville, Arkansas, United States
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    Abstract

    Semiconductor perovskite films are now being widely investigated as light harvesters in solar cells with ever-increasing power conversion efficiencies, which have motivated the fabrication of other optoelectronic devices, such as light-emitting diodes, lasers, and photodetectors. Their superior material and optical properties are shared by the counterpart colloidal nanocrystals (NCs), with the additional advantage of quantum confinement that can yield size-dependent optical emission ranging from the near-UV to near-infrared wavelengths. So far, intensive research efforts have been devoted to the optical characterization of perovskite NC ensembles, revealing not only fundamental exciton relaxation and recombination dynamics but also low-threshold amplified spontaneous emission and novel superfluorescence effects. Meanwhile, the application of single-particle spectroscopy techniques to perovskite NCs has helped to resolve a variety of optical properties for which there are few equivalents in traditional colloidal NCs, mainly including nonblinking photoluminescence, suppressed spectral diffusion, stable exciton fine structures, and coherent single-photon emission. While the main purpose of ensemble optical studies is to guide the smooth development of perovskite NCs in classical optoelectronic applications, the rich observations from single-particle optical studies mark the emergence of a potential platform that can be exploited for quantum information technologies.
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    Zengle Cao, Fengrui Hu, Chunfeng Zhang, Shining Zhu, Min Xiao, Xiaoyong Wang. Optical studies of semiconductor perovskite nanocrystals for classical optoelectronic applications and quantum information technologies: a review[J]. Advanced Photonics, 2020, 2(5): 054001
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    Category: Reviews
    Received: Jun. 12, 2020
    Accepted: Aug. 25, 2020
    Posted: Sep. 24, 2020
    Published Online: Sep. 24, 2020
    The Author Email: Cao Zengle (caozengle@163.com), Hu Fengrui (frhu@nju.edu.cn), Zhang Chunfeng (cfzhang@nju.edu.cn), Zhu Shining (zhusn@nju.edu.cn), Xiao Min (mxiao@uark.edu), Wang Xiaoyong (wxiaoyong@nju.edu.cn)