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GaP Homojunction LEDs Fabricated by Dressed-Photon-Phonon-Assisted Annealing
Author(s) -
Jun Hyoung Kim,
Tadashi Kawazoe,
Motoichi Ohtsu
Publication year - 2015
Publication title -
advances in optical technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.124
H-Index - 25
eISSN - 1687-6407
pISSN - 1687-6393
DOI - 10.1155/2015/236014
Subject(s) - homojunction , annealing (glass) , materials science , light emitting diode , band gap , optoelectronics , photon , phonon , photon energy , dopant , optics , doping , condensed matter physics , physics , composite material
By using a homojunction-structured GaP single crystal, we generated a photon energy higher than the bandgap energy (2.26 eV). The device was fabricated by performing dressed-photon-phonon- (DPP-) assisted annealing, while applying a forward-bias current, on a p-n homojunction structure formed by implanting a dopant (Zn) into an n-type GaP substrate. The DPP-assisted annealing increased the light emission intensity in an energy band above 2.32 eV by at least 550% compared with that before annealing

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