PHOTOLUMINESCENCE AND CARRIER DYNAMICS IN GAAS QUANTUM-WELLS

Authors
PIERMAROCCHI C SAVONA V QUATTROPANI A SCHWENDIMANN P TASSONE F
Citation
C. Piermarocchi et al., PHOTOLUMINESCENCE AND CARRIER DYNAMICS IN GAAS QUANTUM-WELLS, Physica status solidi. a, Applied research, 164(1), 1997, pp. 221-225
Citations number
8
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
164
Issue
1
Year of publication
1997
Pages
221 - 225
Database
ISI
SICI code
0031-8965(1997)164:1<221:PACDIG>2.0.ZU;2-9
Abstract
We use a rate equation model in order to reproduce the dynamics of two -dimensional excitons and free carriers in a time resolved photolumine scence experiment. We investigate the dynamics of the exciton formatio n from free electron-hole pairs, and the evolution of Is excitons with in their band. The interaction of excitons and free carriers with opti cal and acoustic phonons is considered. The shape of the time resolved photoluminescence signal is considerably different in the case of aco ustic or optical phonon assisted formation. An analysis of the photolu minescence rise as a function of the lattice temperature and carrier d ensity is reported.