Polaron Exciton in Spherical Quantum Dot
Abstract
The electron and hole polaron energies are found in a quantum dot made of the materials with high iconicity. It is shown that the energy of hole polaron is larger then the energy of electron polaron due to the degeneration of the valence band. Polaron energies increase with decreasing of the quantum dot radius. In the interband optical transitions, polaron effects are partly compensated, because electron and hole create the polarization potential wells with opposite signs in the process of optical transition. It is shown that there is no total compensation when the degeneration of the valence band structure is taken into account. Therefore the interband transitions are accompanied by the polarization of the medium. The polarization leads to the intensive phonon replicas of the electron transition and to the large Stokes shift of absorption and emission light.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 18, 1999
- Accession Number
- ADP012957
Entities
People
- A. Y. Maslov
- I. P. Ipatova
- O. V. Proshina
Organizations
- Russian Academy of Sciences