DocumentCode :
3056326
Title :
Development of type II superlattice detector for future space applications in JAXA
Author :
Katayama, Hiromi ; Murooka, Jumpei ; Sato, Ryota ; Kimata, M. ; Kitada, T. ; Isu, T. ; Patrashin, Mikhail ; Hosako, Iwao
Author_Institution :
Earth Obs. Res. Center (EORC), Japan Aerosp. Exploration Agency (JAXA), Tsukuba, Japan
fYear :
2013
fDate :
June 30 2013-July 4 2013
Firstpage :
1
Lastpage :
2
Abstract :
Space-borne infrared detectors require higher sensitivity, higher resolution, and larger formats than ground-based infrared detectors. In order to meet more demanding mission requirements, JAXA decided to position infrared detector technology as a strategic technology and promote its development. InAs/GaSb type II superlattices (T2SL) are the only known infrared material with a performance theoretically predicted to be higher than that of HgCdTe. If the T2SL detector is realized, it can be applied to high-sensitivity infrared sensors, which are required for many advanced instruments such as an imaging Fourier transform spectrometer. The final goal of developing the T2SL detector is to realize an array detector with a cutoff wavelength λc of 15 μm. We have started basic research on the T2SL detector. In this paper, we report on the first results for the development of T2SL detectors for the mid-wave infrared regime. The detector structure is a pin photodiode with a superlattice consisting of 9 InAs monolayers (MLs) and 7 GaSb MLs. We present the results of optical evaluation of the detector. The cutoff wavelength is 5.5 μm at 30 K. The responsivity is 0.33 ± 0.05A/W at 4.5 μm.
Keywords :
Fourier transform spectrometers; III-V semiconductors; gallium compounds; indium compounds; infrared detectors; monolayers; p-i-n photodiodes; semiconductor superlattices; InAs-GaSb; JAXA; T2SL detector; array detector; detector structure; future space applications; ground-based infrared detectors; high-sensitivity infrared sensors; imaging Fourier transform spectrometer; infrared material; mid-wave infrared regime; mission requirements; monolayers; pin photodiode; space-borne infrared detectors; temperature 30 K; type II superlattice detector; wavelength 15 mum; wavelength 4.5 mum; wavelength 5.5 mum; Crystals; Dark current; Detectors; Educational institutions; Infrared detectors; Semiconductor device measurement; Superlattices;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location :
Kyoto
Type :
conf
DOI :
10.1109/CLEOPR.2013.6600097
Filename :
6600097
Link To Document :
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