InAsSb-based nBn photodetectors : lattice mismatched growth on GaAs and low-frequency noise performance

Craig, Adam and Thompson, Michael and Tian, Z.-B. and Krishna, S. and Krier, Anthony and Marshall, Andrew (2015) InAsSb-based nBn photodetectors : lattice mismatched growth on GaAs and low-frequency noise performance. Semiconductor Science and Technology, 30 (10): 105011. ISSN 0268-1242

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Abstract

An InAsSb nBn detector structure was grown on both GaAs and native GaSb substrates. Temperature dependent dark current, spectral response, specific detectivity (D*) and noise spectral density measurements were then carried out. Shot-noise-limited D*figures of 1.2 10 Jones × 10 and 3.0 10 Jones × 10 were calculated (based upon the sum of dark current and background photocurrent) for the sample grown on GaAs and the sample grown on GaSb, respectively, at 200 K. Noise spectral density measurements revealed knee frequencies of between 124–337 Hz and ∼8 Hz, respectively. Significantly, these devices could support focal plane arrays capable of operating under thermoelectric cooling.

Item Type:

Journal Article

Journal or Publication Title:

Semiconductor Science and Technology

Additional Information:

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. This is an author-created, un-copyedited version of an article accepted for publication/published in Semiconductor Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.1088/0268-1242/30/10/105011

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/2500/2505

Subjects:

?? f noiseimfspecific detectivitymaterials chemistryelectronic, optical and magnetic materialselectrical and electronic engineeringcondensed matter physics ??

Departments:

Faculty of Science and Technology > Physics

ID Code:

74934

Deposited By:

ep_importer_pure

Deposited On:

11 Aug 2015 14:33

Refereed?:

Yes

Published?:

Published