Результаты исследований: Научные публикации в периодических изданиях › статья
Excitons in nitride heterostructures: From zero- to one-dimensional behavior. / Rosales, D.; Bretagnon, T.; Gil, B.; Kahouli, A.; Brault, J.; Damilano, B.; Massies, J.; Durnev, M.V.; Kavokin, A.V.
в: Physical Review B - Condensed Matter and Materials Physics, Том 88, № 12, 2013, стр. 125437_1-7.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - Excitons in nitride heterostructures: From zero- to one-dimensional behavior
AU - Rosales, D.
AU - Bretagnon, T.
AU - Gil, B.
AU - Kahouli, A.
AU - Brault, J.
AU - Damilano, B.
AU - Massies, J.
AU - Durnev, M.V.
AU - Kavokin, A.V.
PY - 2013
Y1 - 2013
N2 - We report an unusual temperature dependence of exciton lifetimes in arrays of GaN nanostructures grown on semipolar (11-22) oriented Al0.5Ga0.5N alloy by molecular beam epitaxy. Atomic force microscopy measurements revealed: (i) a one-dimensional ordering tendency along the [1-100] crystallographic direction together with (ii) an in-plane anisotropy of the nanostructure lateral shape with respect to [1-100] and [11-23] crystallographic axes. As a consequence, a morphological transition from dot-shaped islands forming an array of nanochains to wire-shaped objects elongated along the [1-100] direction was evidenced with the increase of the GaN deposited amount. Nanostructures of different dimensionality were fabricated including quantum dots (QDs), quantum wires (QWRs), and quantum wells (QWs), and the excitonic behavior was investigated as a function of the nanostructure shape. The measured temperature dependencies of the exciton radiative decay revealed its direct correlation with a spatial confinement, result
AB - We report an unusual temperature dependence of exciton lifetimes in arrays of GaN nanostructures grown on semipolar (11-22) oriented Al0.5Ga0.5N alloy by molecular beam epitaxy. Atomic force microscopy measurements revealed: (i) a one-dimensional ordering tendency along the [1-100] crystallographic direction together with (ii) an in-plane anisotropy of the nanostructure lateral shape with respect to [1-100] and [11-23] crystallographic axes. As a consequence, a morphological transition from dot-shaped islands forming an array of nanochains to wire-shaped objects elongated along the [1-100] direction was evidenced with the increase of the GaN deposited amount. Nanostructures of different dimensionality were fabricated including quantum dots (QDs), quantum wires (QWRs), and quantum wells (QWs), and the excitonic behavior was investigated as a function of the nanostructure shape. The measured temperature dependencies of the exciton radiative decay revealed its direct correlation with a spatial confinement, result
U2 - 10.1103/PhysRevB.88.125437
DO - 10.1103/PhysRevB.88.125437
M3 - Article
VL - 88
SP - 125437_1-7
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 12
ER -
ID: 5685476