Optical spectroscopy of semiconductor quantum wires

We investigated the optical properties of excitons in quasi-one-dimensional semiconductor quantum structures by photoluminescence and photoluminescence excitation: High-quality GaAs/AlxGa1-xAs heterostructures were grown using low-pressure organometallic chemical vapour deposition (OMCVD) on non-planar substrates. The experimentally observed subband separations are in good agreement with a theoretical calculation of the quantum-confined eigenstates, which includes the mapping of the crescent-shaped wire obtained on TEM micrographs. Additionally, a temperature dependence study of excitonic spectra reveals the dominant role of potential and size fluctuations in localizing the excitons.


Publié dans:
Nuovo Cimento Della Societa Italiana Di Fisica D-Condensed Matter Atomic Molecular and Chemical Physics Fluids Plasmas Biophysics, 17, 11-12, 1641-1650
Année
1995
ISSN:
0392-6737
Mots-clefs:
Note:
Oberli, DY, ECOLE POLYTECH FED LAUSANNE,DEPT PHYS,CH-1015 LAUSANNE,SWITZERLAND.
ISI Document Delivery No.: UB294
Times Cited: 10
Cited Reference Count: 10
Cited References:
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Laboratoires:




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