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Review Article | Online First

Single quantum dot spectroscopy for exciton dynamics

Bin Li1Guofeng Zhang2( )Yuke Gao1Xiaopeng chen1Ruiyun Chen2Chengbing Qin2Jianyong Hu2Ruixiang Wu1Liantuan Xiao2( )Suotang Jia2
Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Taiyuan 030031, China
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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Abstract

Colloidal semiconductor quantum dots (QDs) exhibit broadband light absorption, continuously tunable narrowband emission, and high photoluminescence quantum yields. As such, they represent promising materials for use in light-emitting diodes, solar cells, detectors, and lasers. Single-QD spectroscopy can remove the ensemble averaging to reveal the diverse optical properties and exciton dynamics of QD materials at the single-particle level. The results of relevant research can serve as guidelines for materials science community in tailoring the synthesis of QDs to develop novel applications. This paper reviews recent progress in exciton dynamics revealed by single-QD spectroscopy, focusing on the exciton and multi-exciton dynamics of single colloidal CdSe-based QDs and perovskite QDs. Finally, potential future directions for single-QD spectroscopy and exciton dynamics are briefly considered.

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Nano Research
Cite this article:
Li B, Zhang G, Gao Y, et al. Single quantum dot spectroscopy for exciton dynamics. Nano Research, 2024, https://doi.org/10.1007/s12274-024-6504-x
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Received: 29 November 2023
Revised: 10 January 2024
Accepted: 18 January 2024
Published: 07 March 2024
© Tsinghua University Press 2024
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