skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High operating temperature interband cascade focal plane arrays

Abstract

In this paper, we report the initial demonstration of mid-infrared interband cascade (IC) photodetector focal plane arrays with multiple-stage/junction design. The merits of IC photodetectors include low noise and efficient photocarrier extraction, even for zero-bias operation. By adopting enhanced electron barrier design and a total absorber thickness of 0.7 μm, the 5-stage IC detectors show very low dark current (1.10 × 10{sup −7} A/cm{sup 2} at −5 mV and 150 K). Even with un-optimized fabrication and standard commercial (mis-matched) read-out circuit technology, infrared images are obtained by the 320 × 256 IC focal plane array up to 180 K with f/2.3 optics. The minimum noise equivalent temperature difference of 28 mK is obtained at 120 K. These initial results indicate great potential of IC photodetectors, particularly for high operating temperature applications.

Authors:
; ; ; ; ;  [1]
  1. Center for High Technology Materials, Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106 (United States)
Publication Date:
OSTI Identifier:
22314470
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTRIC CONTACTS; ELECTRIC CURRENTS; FABRICATION; INFRARED SPECTRA; PHOTODETECTORS; SEMICONDUCTOR JUNCTIONS

Citation Formats

Tian, Z.-B., Godoy, S. E., Kim, H. S., Schuler-Sandy, T., Montoya, J. A., and Krishna, S. High operating temperature interband cascade focal plane arrays. United States: N. p., 2014. Web. doi:10.1063/1.4892634.
Tian, Z.-B., Godoy, S. E., Kim, H. S., Schuler-Sandy, T., Montoya, J. A., & Krishna, S. High operating temperature interband cascade focal plane arrays. United States. doi:10.1063/1.4892634.
Tian, Z.-B., Godoy, S. E., Kim, H. S., Schuler-Sandy, T., Montoya, J. A., and Krishna, S. Mon . "High operating temperature interband cascade focal plane arrays". United States. doi:10.1063/1.4892634.
@article{osti_22314470,
title = {High operating temperature interband cascade focal plane arrays},
author = {Tian, Z.-B. and Godoy, S. E. and Kim, H. S. and Schuler-Sandy, T. and Montoya, J. A. and Krishna, S.},
abstractNote = {In this paper, we report the initial demonstration of mid-infrared interband cascade (IC) photodetector focal plane arrays with multiple-stage/junction design. The merits of IC photodetectors include low noise and efficient photocarrier extraction, even for zero-bias operation. By adopting enhanced electron barrier design and a total absorber thickness of 0.7 μm, the 5-stage IC detectors show very low dark current (1.10 × 10{sup −7} A/cm{sup 2} at −5 mV and 150 K). Even with un-optimized fabrication and standard commercial (mis-matched) read-out circuit technology, infrared images are obtained by the 320 × 256 IC focal plane array up to 180 K with f/2.3 optics. The minimum noise equivalent temperature difference of 28 mK is obtained at 120 K. These initial results indicate great potential of IC photodetectors, particularly for high operating temperature applications.},
doi = {10.1063/1.4892634},
journal = {Applied Physics Letters},
number = 5,
volume = 105,
place = {United States},
year = {Mon Aug 04 00:00:00 EDT 2014},
month = {Mon Aug 04 00:00:00 EDT 2014}
}