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Low-temperature anti-Stokes luminescence mediated by disorder in semiconductor quantum-well structures
- Source :
- Physical Review B. 51:18053-18056
- Publication Year :
- 1995
- Publisher :
- American Physical Society (APS), 1995.
-
Abstract
- In low-temperature photoluminescence experiments on II-VI semiconductor quantum wells we find an energy transfer from confined quantum-well states to above-barrier states. The observed anti-Stokes barrier luminescence exhibits a characteristic intensity dependence showing that this transfer is caused by a two-step absorption process involving localized or impurity bound-exciton states in the quantum well. Time-resolved photoluminescence experiments show that the photon for the second intraband absorption step can be provided by the quantum-well luminescence, i.e., the anti-Stokes barrier luminescence is a direct consequence of photon recycling.
- Subjects :
- Semiconductor luminescence equations
Photon
Photoluminescence
Materials science
Condensed Matter::Other
business.industry
Physics::Optics
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Condensed Matter::Materials Science
Semiconductor
Impurity
Atomic physics
Luminescence
Absorption (electromagnetic radiation)
business
Quantum well
Subjects
Details
- ISSN :
- 10953795 and 01631829
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi.dedup.....c9ec5505ac00a2e6a5156b15df5abb93