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High performance infra-red detectors based on Si/SiGe multilayers quantum structure
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0002-5845-3032
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
2012 (English)In: Materials Science & Engineering: B. Solid-state Materials for Advanced Technology, ISSN 0921-5107, E-ISSN 1873-4944, Vol. 177, no 17, 1563-1566 p.Article in journal (Refereed) Published
Abstract [en]

Recently, single crystalline (Sc) Si/SiGe multi quantum structure has been recognized as a new low-cost thermistor material for IR detection. Higher signal-to-noise (SNR) ratio and temperature coefficient of resistance (TCR) than existing thermistor materials have converted it to a candidate for infrared (IR) detection in night vision applications. In this study, the effects of Ge content, C doping and the Ni silicidation of the contacts on the performance of SiGe/Si thermistor material have been investigated. Finally, an uncooled thermistor material with TCR of -4.5%/K for 100 μm × 100 μm pixel sizes and low noise constant (K 1/f) value of 4.4 × 10 -15 is presented. The outstanding performance of the devices is due to Ni silicide contacts, smooth interfaces, and high quality multi quantum wells (MQWs) containing high Ge content.

Place, publisher, year, edition, pages
2012. Vol. 177, no 17, 1563-1566 p.
Keyword [en]
Detector, Infrared, Quantum, Sensor, SiGe, SNR, TCR
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-87259DOI: 10.1016/j.mseb.2011.10.013ISI: 000309853000009Scopus ID: 2-s2.0-84866394506OAI: oai:DiVA.org:kth-87259DiVA: diva2:502015
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Note

QC 20121015. Updated from accepted to published.

Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2017-12-07Bibliographically approved

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Kolahdouz, MohammadrezaÖstling, MikaelRadamson, Henry H.
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