Thin-Film Pb0.9Sn0.1Se Photoconductive Infrared Detectors: Photoconductivity Measurements.
Abstract
Pb(0.9)Sn(0.1)Se thin films were depositived on cleaved CaF2 and BaF2 substrates by vacuum evaporation methods. The as-deposited films were not photosensitive. Photo-conductivity was observed after the films had been isothermally annealed in Pb-Sn rich vapor to reduce their carrier concentrations. Blackbody (500K) response measurements were made to determine the responsivity and detectivity of the thin-film samples. The wavelengths of photoconductive thresholds were determined by spectral response measurement and were in good agreement with the fundamental absorption edges. Photoconductive response times were measured using a GaAlAs heterojunction laser diode as the radiation source. (Author Modified Abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1972
- Accession Number
- AD0758685
Entities
People
- Kurt Ervin Holmquist
Organizations
- Naval Postgraduate School