Abstract
We present in this paper a variational calculation for the ground state of the donor and light- and heavy-hole excitons in triangular quantum wells. The binding energy and the lateral and vertical extensions of the wave function are calculated for several well-height values, all as functions of the well width. Compared with a square-well structure or a δ-doped well, the triangular quantum well presents a greater restriction to the donor and exciton. As a result, the lateral and vertical extensions of the ground state are smaller, while the binding energy and the probability inside the well are larger. We conclude in this paper that a triangular quantum-well structure may be significant for theoretical research and practical application.
- Received 27 December 1993
DOI:https://doi.org/10.1103/PhysRevB.50.2689
©1994 American Physical Society