Accession Number:

ADA255971

Title:

Organic/IR-Semiconductor Heterojunctions for Low-Cost, High Temperature IR Arrays

Descriptive Note:

Final rept. 31 Dec 1991-31 Jun 1992

Corporate Author:

SANTA BARBARA FOCALPLANE GOLETA CA

Personal Author(s):

Report Date:

1992-08-30

Pagination or Media Count:

42.0

Abstract:

This program evaluated a new technology for producing infrared photo- diodes in HgCdTe and InSb using evaporated organic heterojunctions. High quantum-efficiency IR detectors were demonstrated with the organic process comparable to commercial IR detectors. The organic photodiodes at room temperature were better than commercial detectors. They had lower leakage currents and higher resistance-area products RoAs. Detector arrays made with the organics can operate at higher temperatures than the current detectors. Initial dam at low temperatures were poorer than commercial detectors with lower RoAs and slightly higher 1f noise. This comparison at low temperature may change with further optimization of the organic process. The organic diode process is very simple, low cost and non-damaging to the HgCdTe or InSb. It involves thermal evaporation of the organic onto the HgCdTe or InSb followed by evaporation of metal contacts through a shadow mask. Phase 1 demonstrated organicHaCdTe IR detectors with quantum efficiencies similar to commercial devices operating at higher temperatures. The technology is ready for a Phase 2 to further optimize the processing for IR arrays and to increase yields.

Subject Categories:

  • Electrical and Electronic Equipment
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE