Accession Number:

ADA058698

Title:

Radiation Effects of IR Detectors.

Descriptive Note:

Final rept. 30 Jun 75-30 Jan 78,

Corporate Author:

LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CALIF PALO ALTO RESEARCH LAB

Report Date:

1978-03-01

Pagination or Media Count:

120.0

Abstract:

The effects of surface potential and surface states on the properties of, and radiation sensitivity of trapping mode mercury cadmium telluride detectors with energy gaps of 0.3 eV and 0.1 eV were investigated. These studies were made with photo MIS structures. Low frequency C-V measurements were made and a program developed to extract the surface state density and surface potential from these data. The responsivity of these devices was dependent on surface potential. Gamma irradiation increased the number of surface states at the valence band edge but did not affect surface potential. The 0.3 eV detectors appeared to be more radiation sensitive than the 0.1 eV detectors. The results of this study are briefly discussed in light of current models for trapping behavior. Author

Subject Categories:

  • Radiobiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE