Open AccessPolarized Photoluminescence From Nonpolar (11–20) (Ga,In)N Multi-Quantum-Wells
Author(s) -
T. Gühne,
Z. Bougrioua,
M. Némoz,
Radosław Chmielowski,
T. Bretag,
B. Gil,
M. Leroux,
Marília Caldas,
Nélson Studart
Publication year - 2010
Publication title -
aip conference proceedings
Language(s) - English
Resource type - Conference proceedings
eISSN - 1551-7616
pISSN - 0094-243X
DOI - 10.1063/1.3295362
Subject(s) - photoluminescence , orthorhombic crystal system , exciton , quantum well , polarization (electrochemistry) , materials science , condensed matter physics , molecular physics , chemistry , crystal structure , optoelectronics , physics , laser , optics , crystallography
International audienceNonpolar (11-20) (Ga,In)N multi-quantum wells have been studied by polarized, temperature dependent photoluminescence (PL). A non monotonic temperature dependence of the difference in PL peak energies recorded for E parallel to c or E perpendicular to c, and of the polarization ratio is observed. We interpret these effects by first an orthorhombic distortion of the crystal and an increased electron-hole exchange energy relative to GaN. This increase is in agreement with calculations on the effect of confinement on the exciton exchange splitting
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom