Journal
JOURNAL OF APPLIED PHYSICS
Volume 113, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4794492
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Funding
- DoD AFOSR [FA9550-12-1-0451]
- DoD ARO [W911NF-07-1-0587]
- Oklahoma OCAST program [AR112-18, AR082-052]
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For nearly a century, oxygen has been widely accepted as the key element that triggers photo-response in polycrystalline PbSe photoconductive detectors. Our photoluminescence and responsivity studies on PbSe samples, however, suggest that oxygen only serves as an effective sensitization improver and it is iodine rather than oxygen that plays the key role in triggering the photo-response. These studies shed light on the sensitization process for detector applications and ways to passivate defects in IV-VI semiconductors. As a result, high peak detectivity of 2.8 x 10 10 cm . Hz(1/2) . W-1 was achieved at room temperature. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794492]
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