We use time-resolved photoluminescence spectroscopy to probe the relaxation of excited states in In 0.5 Al 0.04 Ga 0.46 As/Al 0.08 Ga 0.92 As self-assembled quantum dots. The relaxation rate of excitons confined to the quantum dots increases by nearly an order of magnitude as the energy of the state
Temperature-dependent photoluminescence of In0.5Al0.5As/Al0.25Ga0.75As self-organized quantum dots
β Scribed by Phillips, J.; Kamath, K.; Bhattacharya, P.; Venkateswaran, U.
- Book ID
- 115484768
- Publisher
- American Institute of Physics
- Year
- 1999
- Tongue
- English
- Weight
- 1011 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0021-8979
- DOI
- 10.1063/1.369618
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The photoluminescence (PL) of In 0.55 Al 0.45 As/Al 0.5 Ga 0.5 As self-assembled quantum dots has been measured at 15 and 80 K under hydrostatic pressure. The lateral size of the dots ranges from 7 to 62 nm. The emissions from the dots with 26, 52 and 62 nm size have a blue shift under pressure, ind
We report the successful fabrication of a V-groove Al 0.5 Ga 0.5 As/GaAs/Al 0.5 Ga 0.5 As quantum wire system and the temperature-dependent photoluminescence (PL) measurement. The PL spectra are dominated by four features at 681, 642, 635 and 621 nm attributed to the luminescences from quantum wire,