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Bias mediated tuning of the detection wavelength in asymmetrical quantum dots-in-a-well infrared photodetectors
Acreo AB.
Linköping University.
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Applied Mathematics and Physics (CAMP).ORCID iD: 0000-0001-5027-1456
IRnova.
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2008 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 93, no 20, p. 203512-Article in journal (Refereed) Published
Abstract [en]

Bias-mediated tuning of the detection wavelength within the infrared wavelength region is demonstrated for quantum dots-in-a-well and dots-on-a-well infrared photodetectors. By positioning the InAs quantum dot layer asymmetrically in an 8 nm wide In0.15Ga0.85As/GaAs quantum well, a shift in the peak detection wavelength from 8.4 to 10.3 μm was observed when reversing the polarity of the applied bias. For a dots-on-a-well structure, the peak detection wavelength was tuned from 5.4 to 8 μm with small changes in the applied bias. These tuning properties could be essential for applications such as modulators and dual-color infrared detection.

Place, publisher, year, edition, pages
New York: American Institute of Physics (AIP), 2008. Vol. 93, no 20, p. 203512-
Keywords [en]
SEMICONDUCTORS, QUANTUM dots, QUANTUM electronics, ELECTRON optics, QUANTUM wells
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:hh:diva-3417DOI: 10.1063/1.3033169ISI: 000261141400082Scopus ID: 2-s2.0-56849112773OAI: oai:DiVA.org:hh-3417DiVA, id: diva2:295210
Available from: 2010-02-17 Created: 2009-12-01 Last updated: 2018-04-03Bibliographically approved

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Pettersson, Håkan

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CiteExportLink to record
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Citation style
  • apa
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  • Other locale
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