Single quantum dot spectroscopy for exciton dynamics  

作　　者：Bin Li Guofeng Zhang Yuke Gao Xiaopeng chen Ruiyun Chen Chengbing Qin Jianyong Hu Ruixiang Wu Liantuan Xiao Suotang Jia 

机构地区：[1]Key Laboratory of Spectral Measurement and Analysis of Shanxi Province,College of Physics and Information Engineering,Shanxi Normal University,Taiyuan 030031,China [2]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

出　　处：《Nano Research》2024年第12期10332-10345,共14页纳米研究（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2022YFA1404201);the National Natural Science Foundation of China(Nos.62305201,62075120,62075122,62127817,62222509,U22A2091,U23A20380,and 62105193);Program for Changjiang Scholars and Innovative Research Team(No.IRT_17R70);Shanxi Province Science and Technology Major Special Project(No.202201010101005);Fundamental Research Program of Shanxi Province(Nos.202103021223254 and 202203021221121);Graduate Innovation Project in Shanxi Province(No.2023KY460);Shanxi Province Science and Technology Innovation Talent Team(No.202204051001014);Science and Technology Cooperation Project of Shanxi Province(No.202104041101021);Shanxi“1331 Project”,111 projects(No.D18001).

摘　　要：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.

关 键 词：single quantum dot spectroscopy exciton dynamics single exciton photoluminescence blinking BIEXCITON 

分 类 号：O47[理学—半导体物理]