Thin-Film Pb0.9Sn0.1Se Photoconductive Infrared Detectors: Photoconductivity Measurements.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
Pagination or Media Count:
Pb0.9Sn0.1Se 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
- Electrical and Electronic Equipment
- Infrared Detection and Detectors
- Solid State Physics