Accession Number:

AD0751758

Title:

Studies of Photo-Induced Tunnel Currents in A1-A1203-Au Structures.

Descriptive Note:

Final technical rept. Jul 71-Jun 72,

Corporate Author:

HEBREW UNIV JERUSALEM (ISRAEL)

Personal Author(s):

Report Date:

1972-08-01

Pagination or Media Count:

27.0

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 andor scattering in the Al2O3 layer are quite important, possibly reducing the current by as much as two orders of magnitude. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE