Microcrystal modulated exciton-polariton emissions from single ZnO@ZnO:Ga microwire  

作　　者：WANGQI MAO MINGMING JIANG JIAOLONG JI PENG WAN XIANGBO ZHOU CAIXIA KAN 

机构地区：[1]College of Science,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China [2]Key Laboratory for Intelligent Nano Materials and Devices(MOE),Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Photonics Research》2020年第2期175-185,共11页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(11574307,11974182,U1604263,11774171,21805137,11874220);Priority Academic Program Development of Jiangsu Higher Education Institutions(KYZZ16-0164)。

摘　　要：Due to their outstanding surface-to-volume ratio,highly smooth surface,and well-defined crystal boundary,semiconducting micro-/nanocrystals have been used as a pivotal platform to fabricate multifunctional optoelectronic devices,such as superresolution imaging devices,solar concentrators,photodetectors,light-emitting diodes(LEDs),and lasers.In particular,micro-/nanocrystals as key elements can be employed to tailor the fundamental optical and electronic transport properties of integrated hetero-/homostructures.Herein,ZnO micro crystal-decorated pre-synthesized Ga-doped ZnO microwire(ZnO@ZnO:Ga MW)was prepared.The single ZnO@ZnO:Ga MW can be used to construct optically pumped Fabry-Perot(F-P)mode microlasers,with the dominating lasing peaks centered in the violet spectral region.Stabilized exciton-po lari ton emissions from single ZnO@ZnO:Ga MW-based heterojunction diode can also be realized.The deposited ZnO microcrystals can facilitate the strong coupling of F-P optical modes with excitons,leading to the formation of exciton-polariton features in the ZnO@ZnO:Ga MW.Therefore,the waveguiding lighting behavior and energy-band alignment of ZnO microcrystal-sheathed ZnO:Ga MW radial structures should be extremely attractive for potential applications in semiconducting microstructure-based optoelectronic devices,such as micro-LEDs,laser microcavities,waveguides,and photodetectors.

关 键 词：OPTOELECTRONIC pumped HETEROJUNCTION 

分 类 号：TN248[电子电信—物理电子学] TN36[一般工业技术—材料科学与工程] TB383.1