Controlling plasmon‐exciton interactions through photothermal reshaping  

作　　者：Aiqin Hu Shuai Liu Jingyi Zhao Te Wen Weidong Zhang Qihuang Gong Yongqiang Meng Yu Ye Guowei Lu 

机构地区：[1]State Key Laboratory for Mesoscopic Physics,Collaborative Innovation Center of Quantum Matter,Nano-optoelectronics Frontier Center of the Ministry of Education,School of Physics,Peking University,Beijing 100871,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,Shanxi 030006,China [3]School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China

出　　处：《Opto-Electronic Advances》2020年第1期8-15,共8页光电进展（英文）

基　　金：This work was supported by the National Key Research and Development Program of China(grant No.2018YFB2200401);the National Natural Science Foundation of China(grant Nos.91950111,61521004 and 11527901).

摘　　要：We investigated the plasmon-exciton interactions in an individual gold nanorod(GNR)with monolayer MoS2 at room temperature with the single-particle spectroscopy technique.To control the plasmon-exciton interaction,we tuned the local surface plasmon resonance of an individual GNR in-situ by employing the photothermal reshaping effect.The scattering spectra of the GNR-MoS2 hybrids exhibited two dips at the frequencies of the A and B excitons of monolayer MoS2,which were caused by the plasmon-induced resonance energy transfer effect.The resonance energy transfer rate increased when the surface plasmon resonance of the nanorod matched well with the exciton transition energy.Also,we demonstrated that the plasmon-enhanced fluorescence process dominated the photoluminescence of the GNR-MoS2 hybrid.These results provide a flexible way to control the plasmon-exciton interaction in an all-solid-state operating system at room temperature.

关 键 词：gold nanorod MOS2 hybrid SCATTERING PHOTOLUMINESCENCE single nanoparticle 

分 类 号：O53[理学—等离子体物理]