Abstract
A theoretical method for studying the properties of and excitons in polar quantum wells with finite potential barriers is presented. Exciton–optical-phonon interaction together with an image-charge effect and discontinuity of the band masses are included in the theory. Exciton binding energies and exciton–LO-phonon interaction energies of and quantum wells are calculated numerically. Our theory gives correct results throughout the entire well-width range of the finite-barrier quantum wells. The properties of the and excitons are found very different in quantum wells. The theoretical results of the energy difference between and exciton states of heavy-hole excitons in these quantum-well structures are compared with the experimental data directly. The property of the excitons in polar quantum wells are discussed in the present paper.
- Received 3 February 1998
DOI:https://doi.org/10.1103/PhysRevB.58.10769
©1998 American Physical Society