title: Room temperature current injection polariton light emitting diode with a hybrid microcavity.
abstract: The strong light-matter interaction within a semiconductor high-Q microcavity has been used to produce half-matter/half-light quasiparticles, exciton-polaritons. The exciton-polaritons have very small effective mass and controllable energy-momentum dispersion relation. These unique properties of polaritons provide the possibility to investigate the fundamental physics including solid-state cavity quantum electrodynamics, and dynamical Bose-Einstein condensates (BECs). Thus far the polariton BEC has been demonstrated using optical excitation. However, from a practical viewpoint, the current injection polariton devices operating at room temperature would be most desirable. Here we report the first realization of a current injection microcavity GaN exciton-polariton light emitting diode (LED) operating under room temperature. The exciton-polariton emission from the LED at photon energy 3.02 eV under strong coupling condition is confirmed through temperature-dependent and angle-resolved electroluminescence spectra.
authors.affiliation: Department of Photonics, National Chiao Tung University, Hsinchu 300, Taiwan. timtclu@mail.nctu.edu.tw
authors.forename: Tien-Chang
authors.initials: TC
authors.lastname: Lu
authors.forename: Jun-Rong
authors.initials: JR
authors.lastname: Chen
authors.forename: Shiang-Chi
authors.initials: SC
authors.lastname: Lin
authors.forename: Si-Wei
authors.initials: SW
authors.lastname: Huang
authors.forename: Shing-Chung
authors.initials: SC
authors.lastname: Wang
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Yamamoto
mesh_terms: D005708:Gallium / Q000737:chemistry*; D008027:Light; D036103:Nanotechnology; D010316:Particle Size; D017785:Photons; D011789:Quantum Theory; D012666:Semiconductors; D013499:Surface Properties; D013696:Temperature
chemical_list: C473348:gallium nitride; D005708:Gallium