Reevaluation of blueshifts introduced by lateral confinement in quantum-well wire structures
Author
Summary, in English
The luminescence from etched quantum-well wire structures often exhibits an unexpectedly large blueshift of the peak energy position. Further, the shift is usually quite independent of the width of the wires. In this letter we show that this blueshift can be explained as a decreased transfer of excitons between areas of different monolayer thicknesses within the single quantum wells, caused by a change in the exciton diffusion from being two-dimensional in the quantum wells to one-dimensional in the wires. This reduced transfer will result in a blueshift of the peak energy position if the monolayer splitting is unresolved.
Department/s
Publishing year
1993
Language
English
Pages
1709-1711
Publication/Series
Applied Physics Letters
Volume
12
Issue
15
Document type
Journal article
Publisher
American Institute of Physics (AIP)
Topic
- Condensed Matter Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 0003-6951