Title: Room Temperature Current Injection Polariton Light Emitting Diode with a Hybrid Microcavity
Authors: Lu, Tien-Chang
Chen, Jun-Rong
Lin, Shiang-Chi
Huang, Si-Wei
Wang, Shing-Chung
Yamamoto, Yoshihisa
Department of Photonics
Keywords: GaN;exciton-polariton;light emitting diode (LED);Rabi splitting
Issue Date: 1-Jul-2011
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 electro-dynamics, 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.
URI: http://dx.doi.org/10.1021/nl2011164
ISSN: 1530-6984
DOI: 10.1021/nl2011164
Volume: 11
Issue: 7
Begin Page: 2791
End Page: 2795
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