Details
| Original language | English |
|---|---|
| Pages (from-to) | 8980-8985 |
| Number of pages | 6 |
| Journal | Physical Review B |
| Volume | 48 |
| Issue number | 12 |
| Publication status | Published - 15 Sept 1993 |
| Externally published | Yes |
Abstract
Exciton resonances are observed in the room-temperature absorption and photoluminescence (PL) spectra of CdTe/Cd0.85Mn0.15Te multiple-quantum-well structures. Temperature-dependent absorption linewidth and PL decay measurements are reported. Above 45 K, exciton-LO-phonon scattering determines the homogeneous linewidth (H). High excitation intensities were used in the PL decay measurements so that delocalized excitons were created. The PL decay time is found to be a measure of the exciton radiative decay time between 45 and 145 K and it increases linearly with H/r(T), where r(T) is the fraction of excitons with transition frequencies in H. From 170 K nonradiative processes dominate the decay so that the PL decay time decreases with temperature.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 48, No. 12, 15.09.1993, p. 8980-8985.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Exciton radiative decay and homogeneous broadening in CdTe/Cd0.85Mn0.15Te multiple quantum wells
AU - O'Neill, M.
AU - Oestreich, Michael
AU - Rühle, Wolfgang W.
AU - Ashenford, D. E.
PY - 1993/9/15
Y1 - 1993/9/15
N2 - Exciton resonances are observed in the room-temperature absorption and photoluminescence (PL) spectra of CdTe/Cd0.85Mn0.15Te multiple-quantum-well structures. Temperature-dependent absorption linewidth and PL decay measurements are reported. Above 45 K, exciton-LO-phonon scattering determines the homogeneous linewidth (H). High excitation intensities were used in the PL decay measurements so that delocalized excitons were created. The PL decay time is found to be a measure of the exciton radiative decay time between 45 and 145 K and it increases linearly with H/r(T), where r(T) is the fraction of excitons with transition frequencies in H. From 170 K nonradiative processes dominate the decay so that the PL decay time decreases with temperature.
AB - Exciton resonances are observed in the room-temperature absorption and photoluminescence (PL) spectra of CdTe/Cd0.85Mn0.15Te multiple-quantum-well structures. Temperature-dependent absorption linewidth and PL decay measurements are reported. Above 45 K, exciton-LO-phonon scattering determines the homogeneous linewidth (H). High excitation intensities were used in the PL decay measurements so that delocalized excitons were created. The PL decay time is found to be a measure of the exciton radiative decay time between 45 and 145 K and it increases linearly with H/r(T), where r(T) is the fraction of excitons with transition frequencies in H. From 170 K nonradiative processes dominate the decay so that the PL decay time decreases with temperature.
UR - http://www.scopus.com/inward/record.url?scp=0000781239&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.48.8980
DO - 10.1103/PhysRevB.48.8980
M3 - Article
AN - SCOPUS:0000781239
VL - 48
SP - 8980
EP - 8985
JO - Physical Review B
JF - Physical Review B
SN - 0163-1829
IS - 12
ER -