Modeling of Silicon Quantum Structures
Abstract
The proposed research was to investigate the carrier optical-phonon interaction in a mixed polar-nonpolar material system of Si/ZnS superlattices, where not only carriers are confined, but also the optical phonons. The heavy-hole subbands and associated wave functions were calculated for Si/ZnS superlattices. Optical phonon confinement were modeled successfully using a continuum model with proper mechanical and electrostatic boundary conditions satisfied at the heterointerface. The established model for the confined optical phonons is used in calculating the intersubband heavy-hole scattering rate by optical phonons in the Si/ZnS superlattice. This work establishes the theoretical foundation to determine subband lifetimes in the design of Si/ZnS quantum well intersubband lasers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1999
- Accession Number
- ADA363362
Entities
People
- Greg Sun
Organizations
- University of Massachusetts Boston