Studies of Photo-Induced Tunnel Currents in A1-A1203-Au Structures.
Abstract
The work describes the study of tunnel-diodes of the metal-insulator-metal structure based on measurements of the photo-induced tunnel current (PITC). Effort provided a series of measurements on Al-Al2O3-Au tunnel diodes that included PITC as well as I-V and internal photo-emission measurements. A simplified model is presented from which a theoretical expression for the PITC can be derived. It is shown that the experimental results are in a fairly good agreement with the theory. The potential barriers at the Al-Al2O3 and Au-Al2O3 interfaces were deduced to be 2.0 and 4.35 ev. The cross-section for photo-generation of electrons in the aluminum metal was estimated as 10 to the minus 16th power sq cm. It is also shown that electron reflection at the metal-oxide interfaces and/or scattering in the Al2O3 layer are quite important, possibly reducing the current by as much as two orders of magnitude. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1972
- Accession Number
- AD0751758
Entities
People
- A. Many
- J. Levinson
- Z. Burshtein
Organizations
- Hebrew University of Jerusalem