Giant excitonic upconverted emission from two-dimensional semiconductor in doubly resonant plasmonic nanocavity

作     者：Pengfei Qi Yuchen Dai Yang Luo Guangyi Tao Liheng Zheng Donglin Liu Tianhao Zhang Jiadong Zhou Bo Shen Feng Lin Zheng Liu Zheyu Fang Pengfei Qi;Yuchen Dai;Yang Luo;Guangyi Tao;Liheng Zheng;Donglin Liu;Tianhao Zhang;Jiadong Zhou;Bo Shen;Feng Lin;Zheng Liu;Zheyu Fang

作者机构：School of PhysicsState Key Laboratory for Mesoscopic PhysicsAcademy for Advanced Interdisciplinary StudiesCollaborative Innovation Center of Quantum MatterNano-optoelectronics Frontier Center of Ministry of EducationPeking UniversityBeijing 100871China Institute of Modern OpticsNankai UniversityTianjin Key Laboratory of Micro-scale Optical Information Science and TechnologyTianjin 300350China Photonics Research CenterSchool of PhysicsMOE Key Lab of Weak-Light Nonlinear Photonicsand Tianjin Key Lab of Photonics Materials and Technology for Information ScienceNankai UniversityTianjin 300071China School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2022年第11卷第7期

页      面：1523-1534页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：supported by National Key Research and Development Program of China(grant no.2017YFA0206000) Beijing Natural Science Foundation(grant nos.Z180011) National Key Research Program(2017YFA0205700,2019YFA0210203,2020YFA0211300) National Science Foundation of China(gant nos.12027807,21790364,12104241) High-performance Computing Platform of Peking University 

主　　题：converted resonant doubly 

摘      要：Phonon-assisted upconverted emission is the heart of energy harvesting,bioimaging,optical cryptography,and optical *** has been demonstrated that emerging two-dimensional(2D)semiconductors can provide an excellent platform for efficient phonon-assisted upconversion due to the enhanced optical transition strength and phonon-exciton interaction of 2D ***,there is little research on the further enhancement of excitonic upconverted emission in 2D ***,we report the enhanced multiphoton upconverted emission of 2D excitons in doubly resonant plasmonic *** to the enhanced light collection,enhanced excitation rate,and quantum efficiency enhancement arising from the Purcell effect,an upconverted emission amplification of1000-fold and a decrease of 2~3 orders of magnitude in the saturated excitation power are *** findings pave the way for the development of excitonic upconversion lasing,nanoscopic thermometry,and sensing,revealing the possibility of optical refrigeration in future 2D electronic or excitonic devices.