Title: Identification of the prime optical center in GaN:Eu3+
Authors: Roqan, I. S ×
O'Donnell, K. P
Martin, R. W
Edwards, P. R
Song, S. F
Vantomme, André
Lorenz, K
Alves, E
Bockowski, M #
Issue Date: Feb-2010
Publisher: Amer physical soc
Series Title: Physical review b vol:81 issue:8 pages:1-5
Article number: 085209
Abstract: We identify a dominant light-emitting center in ion-implanted GaN: Eu3+ for which the lattice damage has been completely healed, according to x-ray diffraction and Rutherford backscattering spectrometry measurements, by high-temperature, high-pressure annealing. This center is likely to be the isolated substitutional Eu-Ga defect. It lacks a "subgap" excitation band and therefore has no state in the GaN band gap, shows threefold splitting of its F-7(2) level, with two sublevels nearly degenerate, and exhibits a long, single-exponential luminescence decay. Competing luminescent centers of GaN:Eu involve this prime center with intrinsic lattice defects, one of which may also be responsible for the GaN yellow band.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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