Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | R7797-R7800 |
| Fachzeitschrift | Physical Review B - Condensed Matter and Materials Physics |
| Jahrgang | 59 |
| Ausgabenummer | 12 |
| Publikationsstatus | Veröffentlicht - Dez. 1999 |
| Extern publiziert | Ja |
Abstract
The cooling of a photoexcited exciton distribution in wurtzite GaN is studied by time-resolved photoluminescence measurements on the longitudinal optical phonon replicas of the free exciton. The temperature of the excitons decreases for low sample temperatures within 150 ps down to the lattice temperature. We derive an explicit formula for the transient exciton temperature in terms of cooling via deformation potential scattering with acoustic phonons.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Physical Review B - Condensed Matter and Materials Physics, Jahrgang 59, Nr. 12, 12.1999, S. R7797-R7800.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Cooling dynamics of excitons in gan
AU - Hägele, D.
AU - Zimmermann, R.
AU - Oestreich, Michael
AU - Hofmann, M. R.
AU - Rühle, W. W.
AU - Meyer, Bruno K.
AU - Amano, H.
AU - Akasaki, I.
PY - 1999/12
Y1 - 1999/12
N2 - The cooling of a photoexcited exciton distribution in wurtzite GaN is studied by time-resolved photoluminescence measurements on the longitudinal optical phonon replicas of the free exciton. The temperature of the excitons decreases for low sample temperatures within 150 ps down to the lattice temperature. We derive an explicit formula for the transient exciton temperature in terms of cooling via deformation potential scattering with acoustic phonons.
AB - The cooling of a photoexcited exciton distribution in wurtzite GaN is studied by time-resolved photoluminescence measurements on the longitudinal optical phonon replicas of the free exciton. The temperature of the excitons decreases for low sample temperatures within 150 ps down to the lattice temperature. We derive an explicit formula for the transient exciton temperature in terms of cooling via deformation potential scattering with acoustic phonons.
UR - http://www.scopus.com/inward/record.url?scp=0004136873&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.59.R7797
DO - 10.1103/PhysRevB.59.R7797
M3 - Article
AN - SCOPUS:0004136873
VL - 59
SP - R7797-R7800
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 12
ER -