Advanced infrared detectors for future missile seekers

Download
Author
Fantauzzo, Richard Alan
Date
1978-12Advisor
Fuhs, A.E.
Schoolar, R.B.
Metadata
Show full item recordAbstract
New technology was utilized to design and fabricate a self-filtering infrared detector (SFD) optimized for a specific target signature. The SFD was prepared from vacuum deposited, composition-tuned epitaxial films of the semiconductor alloy, PbS(x)Se(1-x). A filter and detector layer were both grown on opposite sides of a BaF(2) substrate. The detector element was a p-n junction formed by depositing a Pb contact onto a p-type detector layer surrounded by a Au ohmic contact. The optical cuton and cutoff wavelengths were composition-tuned to 4.0 and 5.0 um by adjusting x in both layers. The measured spectral response of the SFD device was in good agreement with theoretical calculations, whereas, the quantum efficiency was below. The device resistance was two orders of magnitude below the predicted values due to surface leakage. This leakage also caused the responsitivity and detectivity to be lower that the predicted values. Application of this technology shows great promise provided these problems can be resolved.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
GEANT4 SIMULATION OF FAST NEUTRON INTERACTIONS IN HEAVY OXIDE SCINTILLATORS
Batteson, Bruce (Monterey, CA; Naval Postgraduate School, 2019-09);Fast neutron detection is critical to the interdiction of illicit special nuclear material, among other potential applications. The use of heavy oxide scintillators to detect fast neutrons is one technology requiring little ... -
Advanced Multilayer Composite Heavy-Oxide Scintillator Detectors for High Efficiency Fast Neutron Detection
Ryzhikov, Volodymyr D.; Naydenov, Sergei V.; Pochet, Thierry; Onyshchenko, Gennadiy M.; Smith, Craig F. (IEEE, 2018);We have developed and evaluated a new approach to fast neutron and neutron–gamma detection based on large-area multilayer composite heterogeneous detection media consisting of dispersed granules of small-crystalline ... -
Detection of gamma-neutron radiation by solid-state scintillation detectors
Ryzhikov, V.; Grinyov, B.; Piven, L.; Onyshchenko, G.; Sidletskiy, O.; Naydenov, S.; Pochet, T.; Smith, C. (IEEE, 2015-07-01);It is known that solid-state scintillators can be used for detection of both gamma radiation and neutron flux. In the past, neutron detection efficiencies of such solid-state scintillators did not exceed 5-7%. At the same ...