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Spray-deposited metal-chalcogenide photodiodes for low cost infrared imagers

Published online by Cambridge University Press:  29 July 2020

Tommy O. Boykin II
Affiliation:
Physics, University of Central Florida, Orlando, FL32816USA Truventic LLC, 1209 W. Gore St. Orlando, FL32805USA
Nagendra Dhakal
Affiliation:
Physics, University of Central Florida, Orlando, FL32816USA Truventic LLC, 1209 W. Gore St. Orlando, FL32805USA
Javaneh Boroumand
Affiliation:
Physics, University of Central Florida, Orlando, FL32816USA
F. Javier Gonzalez
Affiliation:
Physics, University of Central Florida, Orlando, FL32816USA Truventic LLC, 1209 W. Gore St. Orlando, FL32805USA
Isaiah O. Oladeji
Affiliation:
Truventic LLC, 1209 W. Gore St. Orlando, FL32805USA
Pedro Figueiredo
Affiliation:
Truventic LLC, 1209 W. Gore St. Orlando, FL32805USA
Stephen Neushul
Affiliation:
iCRco, Goleta, CA
Robert E. Peale
Affiliation:
Physics, University of Central Florida, Orlando, FL32816USA Truventic LLC, 1209 W. Gore St. Orlando, FL32805USA
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Abstract

Low-cost, light-weight, low-power, large-format, room-temperature, mid-wave infrared (MWIR) detectors are needed for reduced-scale aircraft. An opportunity, suggested by direct-read X-radiography systems, is the use of thin film transistor (TFT) array as read-out integrated circuit (ROIC) for low-cost sensors deposited directly and unpatterned onto this ROIC. TFTs have already been thoroughly optimized for power, weight, large-format, and cost by the flat-panel-display industry. We present experimental investigation of aqueous-spray-deposited, mid-wave-IR, metal-chalcogenide heterojunction CdS/PbS photodiodes for this application. Measured responsivity, detectivity D*, and photoresponse spectra are reported.

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Articles
Copyright
Copyright © Materials Research Society 2020

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