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Strain-symmetrized ...
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Zhao, MingLinköpings universitet,Yt- och Halvledarfysik,Tekniska högskolan
(author)
Strain-symmetrized Si/SiGe multi-quantum well structures grown by molecular beam epitaxy for intersubband engineering
- Article/chapterEnglish2006
Publisher, publication year, extent ...
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Elsevier BV,2006
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-13274
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-13274URI
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https://doi.org/10.1016/j.jlumin.2006.08.080DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Three strain-symmetrized Si/SiGe multi-quantum well structures, designed for probing the carrier lifetime of intrawell intersubband transitions between heavy hole 1 (HH1) and light hole 1 (LH1) states with transition energies below the optical phonon energy, were grown by molecular beam epitaxy at low temperature on fully relaxed SiGe virtual substrates. The grown structures were characterized by using various experimental techniques, showing a high crystalline quality and very precise growth control. The lifetime of the LH1 excited state was determined directly with pump-probe spectroscopy. The measurements indicated an increase of the lifetime by a factor of 2 due to the increasingly unconfined LH1 state, which agreed very well with the design. It also showed a very long lifetime of several hundred picoseconds for the holes excited out of the well to transit back to the well through a diagonal process.
Subject headings and genre
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Molecular beam epitaxy (MBE); Si/SiGe; Pump-probe spectroscopy; Intersubband transition; Lifetime
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TECHNOLOGY
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TEKNIKVETENSKAP
Added entries (persons, corporate bodies, meetings, titles ...)
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Karim, AmirLinköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan(Swepub:liu)amika25
(author)
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Ni, Wei-XinLinköpings universitet,Yt- och Halvledarfysik,Tekniska högskolan(Swepub:liu)weini41
(author)
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Pidgeon, C. R.Department of Physics, Heriot-Watt University, Riccarton, Edinburgh, UK
(author)
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Phillips, P. J.Department of Physics, Heriot-Watt University, Riccarton, Edinburgh, UK
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Carder, D.Department of Physics, Heriot-Watt University, Riccarton, Edinburgh, UK
(author)
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Murdin, B. N.Department of Physics, University of Surrey, UK
(author)
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Fromherz, T.Institut für Halbleiter- und Festkörperphysik, Johannes Kepler Universität, Linz, Austria
(author)
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Paul, D. J.Cavendish Laboratory, University of Cambridge, UK
(author)
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Linköpings universitetYt- och Halvledarfysik
(creator_code:org_t)
Related titles
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In:Journal of luminescence: Elsevier BV121:2, s. 403-4080022-2313
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