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  • Höglund, Linda,1974-Linköpings universitet,Halvledarmaterial,Tekniska högskolan,Industrial Nano- and Microtechnology, Acreo AB, Kista, Sweden (author)

Quantum dots-in-a-well infrared photodetectors for long wavelength infrared detection

  • Article/chapterEnglish2006

Publisher, publication year, extent ...

  • Bellingham, Wash.SPIE - International Society for Optical Engineering,2006
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:hh-22379
  • https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-22379URI
  • https://doi.org/10.1117/12.690010DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-36653URI
  • https://lup.lub.lu.se/record/943412URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:kon swepub-publicationtype

Notes

  • Article number: 640109
  • We report on a quantum dots-in-a-well infrared photodetector (DWELL QDIP) grown by metal organic vapor phase epitaxy. The DWELL QDIP consisted of ten stacked InAs/In0.5Ga0.85As/GaAs QD layers embedded between n-doped contact layers. The density of the QDs was about 9 × 10 10 cm-2 per QD layer. The energy level structure of the DWELL was revealed by optical measurements of interband transitions, and from a comparison with this energy level scheme the origin of the photocurrent peaks could be identified. The main intersubband transition contributing to the photocurrent was associated with the quantum dot ground state to the quantum well excited state transition. The performance of the DWELL QDIPs was evaluated regarding responsivity and dark current for temperatures between 15 K and 77 K. The photocurrent spectrum was dominated by a LWIR peak, with a peak wavelength at 8.4 μm and a full width at half maximum (FWHM) of 1.1 μm. At an operating temperature of 65 K, the peak responsivity was 30 mA/W at an applied bias of 4 V and the dark current was 1.2×10-5 A/cm2. Wavelength tuning from 8.4 μm to 9.5 μm was demonstrated, by reversing the bias of the detector.

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  • Holtz, Per-Olof,1951-Linköpings universitet,Halvledarmaterial,Tekniska högskolan,Department of Physics, Chemistry and Biology (LFM), Linköping University, Linköping, Sweden(Swepub:liu)perho67 (author)
  • Ouattara, LassanaLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research, Lund University, Lund, Sweden(Swepub:lu)slju-lou (author)
  • Asplund, CarlIRnova, Kista, Sweden,lndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Wang, Qinlndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Almqvist, Susannelndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Petrini, Eriklndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Malm, HeddaIRnova, Kista, Sweden,lndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Borglind, J.Industrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Smuk, S.lndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Mikkelsen, AndersLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research, Lund University, Lund, Sweden(Swepub:lu)slju-ami (author)
  • Lundgren, EdvinLund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research, Lund University, Lund, Sweden(Swepub:lu)slju-elu (author)
  • Pettersson, Håkan,1962-Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab),Center for Applied Mathematics and Physics, Halmstad University, Box 823, S-30118 Halmstad, Sweden/Solid State Physics and the Nanometer Consortium, Lund University, Box 118, S-22100 Lund, Sweden,Nanovetenskap(Swepub:hh)hape (author)
  • Andersson, Jan Y.lndustrial Nano- and Microtechnology, Acreo AB, Electrum 236, S-16440 Kista, Sweden (author)
  • Linköpings universitetHalvledarmaterial (creator_code:org_t)

Related titles

  • In:Proceedings of SPIEBellingham, Wash. : SPIE - International Society for Optical Engineering6401, s. 1-6401099780819464996
  • In:Optical Materials in Defence Systems Technology III,2006Bellingham, Wash. : SPIE - International Society for Optical Engineering6401, s. 1-640109
  • In:SPIE proceedings, Security and DefenceBellingham, Wash. : SPIE - International Society for Optical Engineering6401, s. 1-640109

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