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High performance InAs/InAsSb Type-II superlattice mid-wavelength infrared photodetectors with double barrier.

Authors :
Wu, Donghai
Li, Jiakai
Dehzangi, Arash
Razeghi, Manijeh
Source :
Infrared Physics & Technology. Sep2020, Vol. 109, pN.PAG-N.PAG. 1p.
Publication Year :
2020

Abstract

By introducing a double barrier design, a high performance InAs/InAsSb type-II superlattice mid-wavelength infrared photodetector has been demonstrated. The photodetector exhibits a cut-off wavelength of ~4.50 µm at 150 K. At 150 K and −120 mV applied bias, the photodetector exhibits a dark current density of 1.21 × 10−5 A/cm2, a quantum efficiency of 45% at peak responsivity (~3.95 µm), and a specific detectivity of 6.9 × 1011 cm·Hz1/2/W. The photodetector shows background-limited operating temperature up to 160 K. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
13504495
Volume :
109
Database :
Academic Search Index
Journal :
Infrared Physics & Technology
Publication Type :
Academic Journal
Accession number :
145495467
Full Text :
https://doi.org/10.1016/j.infrared.2020.103439