Details
| Original language | English |
|---|---|
| Pages (from-to) | R7797-R7800 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 59 |
| Issue number | 12 |
| Publication status | Published - Dec 1999 |
| Externally published | Yes |
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 subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B - Condensed Matter and Materials Physics, Vol. 59, No. 12, 12.1999, p. R7797-R7800.
Research output: Contribution to journal › Article › Research › 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 -