Detailed characterization of a systematic set of quantum dot infrared photodetectors

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DOIResolve DOI: http://doi.org/10.1016/S1350-4495(03)00167-1
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TypeArticle
Journal titleInfrared Physics & Technology
Volume44
Issue5-6
Pages503508; # of pages: 6
SubjectInfrared photodetectors; Polarization; Quantum dots
AbstractThe results of a detailed characterization study on a systematic set of InAs/GaAs self-assembled quantum dot infrared photodetectors are presented. A simple physical picture is also discussed to account for the main observed features. Photoresponse characteristics in a wide spectral region from the mid- to far-infrared are reported. Clear polarization behaviors with a dominant P-polarized response in the mid-infrared and a strong S-response in the far-infrared regions are shown. These behaviors can be qualitatively understood in view of the quantum dot shape of a large in-plane diameter and a small height in the growth direction. With a set of three samples, effects of the number of electrons per quantum dot on the spectra are investigated.
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AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12333682
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Record identifierb940dd18-dab4-4a8b-9e9a-92c12d5bb8a4
Record created2009-09-10
Record modified2016-05-09
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