Electron transition manipulation under graphene-mediated plasmonic engineering nanostructure  

作　　者：Huaizhou Jin Jing-Yu Wang Xia-Guang Zhang Weiyi Lin Weiwei Cai Yue-Jiao Zhang Zhi-Lin Yang Fan-Li Zhang Jian-Feng Li 

机构地区：[1]College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,China [2]State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,College of Energy,School of Electronic Science and Engineering,Department of Physics,Xiamen University,Xiamen 361005,China [3]Country Key Laboratory of Green Chemical Media and Reactions,Ministry of Education,Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals,School of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang 453007,China

出　　处：《Nano Research》2023年第4期5376-5382,共7页纳米研究（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2019YFA0705400);the National Natural Science Foundation of China(Nos.21925404,22002128,22104135,62004095,and 22021001);Zhejiang Provincial Natural Science Foundation of China(No.LY23B050003).

摘　　要：Monolayer graphene has attracted enormous attention owing to its unique electronic and optical properties.However,achieving an effective approach without applying electrical bias for manipulating the charge transfer based on graphene is elusive to date.Herein,we realized the manipulation of excitons’transition from emitter to the graphene surface with plasmonic engineering nanostructures and firstly obtained large enhancements for photon emission on the graphene surface.The localized plasmons generated from the plasmonic nanostructures of shell-isolated nanoparticle coupling to ultra-flat Au substrate would dictate a consistent junction geometry while enhancing the optical field and dominating the electron transition pathways,which may cause obvious perturbations for molecular radiation behaviors.Additionally,the three-dimensional finite-difference time-domain and time-dependent density functional theory were also carried out to simulate the distributions of electromagnetic field and energy levels of hybrid nanostructure respectively and the results agreed well with the experimental data.Therefore,this work paves a novel approach for tunning graphene charge/energy transfer processes,which may hold great potential for applications in photonic devices based on graphene.

关 键 词：plasmonic nanocavity shell-core isolated nanoparticles electron transition monolayer graphene fluorescence quenching 

分 类 号：TB383[一般工业技术—材料科学与工程]