Infrared Photoconductors (extrinsic photoconductors for the 3-5 micron spectral region and compensated donor photoconductors) Summary Report
Abstract
Two lines of research on extrinsic germanium photoconductors are described in this report. Part I deals with an investigation of photoconductors designed to function in the 3 to 5 micron region. For this, germanium-silicon alloys activated with Au(II) and germanium activated with Co(II) or Ni(I) were studied. Germanium activated with nickel appeared to be the best solution, although its peak response is somewhat below 5 microns. It is probable that with prepared with optimum compensation, its performance would equal that of the known intrinsic photoconductors. Its stability, uniformity, and ease of preparation might be superior. Part II treats the behavior of photo conductors using compensated donor levels near the valence band as pseudo acceptor activators. The lowest levels of gold (25 microns) and cobalt (15 microns) were examined. Promising results were obtained, but further work is required to determine whether advantage can be taken of the possible two or three orders of magnitude in crease in lifetime (and consequently in photo conductive gain) which should be available.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1962
- Accession Number
- AD0406088
Entities
People
- Clark Rowley
- M. L. Schultz
- W. E. Harty
Organizations
- Sarnoff Corporation