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Optical studies of strained type II GaAs0.7Sb0.3/GaAs multiple quantum wells
- Source :
- Journal of Applied Physics. 93:9655-9658
- Publication Year :
- 2003
- Publisher :
- AIP Publishing, 2003.
-
Abstract
- We report a detailed investigation on the optical transitions of strained type II GaAs0.7Sb0.3/GaAs (100) multiple quantum wells. For the theoretical calculations, both of the elastic deformational potential of intrinsic compressive biaxial strain, and quantum confinement effects are included. The asymmetric photoluminescence spectra reveal the features of excited state transition and quantum confinement Stark effect at high and low temperatures, respectively. The asymmetry features have also been investigated and confirmed by low-temperature photoluminescence experiments under different excitation power. From polarized photoluminescence excitation and photoconductivity spectra, both of the type I and type II optical transitions can also be clearly identified.
- Subjects :
- Physics
Photoluminescence
Condensed matter physics
Condensed Matter::Other
Quantum-confined Stark effect
Quantum point contact
General Physics and Astronomy
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Condensed Matter::Materials Science
symbols.namesake
Stark effect
Quantum dot
Excited state
symbols
Photoluminescence excitation
Quantum well
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........b66b47bb20fa13d8f2c956cfc15eae0f