OSCILLATORY PHOTOCONDUCTIVITY.
Abstract
Optical phonons have finite energies with small dispersion. Consequently, the electron interaction with optical phonons may give rise to distinct structures in the optical and photoconductive spectra. The effect of longitudinal optical phonons is especially strong in semiconductors with some degree of polar binding and it may give rise to oscillations of the photoconductive spectrum with an energy interval related to the L0 phonon energy. Such oscillations have been observed in a variety of semiconductors, in intrinsic as well as extrinsic photoconductivity. Phonons may be involved in two different ways: participation in the optical transition process and interaction with the generated carriers. This report is concerned with oscillations produced by phonon interaction with the photogenerated carriers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 28, 1968
- Accession Number
- AD0682491
Entities
People
- H. Y. Fan
Organizations
- Purdue University