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Properties of GaAsN/GaAs quantum wells studied by optical detection of cyclotron resonance
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0002-6405-9509
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0001-7155-7103
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.
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2001 (English)In: Materials Science & Engineering: B. Solid-state Materials for Advanced Technology, ISSN 0921-5107, Vol. 82, no 1-3, 218-220 p.Article in journal (Refereed) Published
Abstract [en]

Effective masses and carrier recombination in GaNAs/GaAs quantum wells (QWs) with nitrogen composition up to 4.5%, have been studied by optical detection of cyclotron resonance (ODCR). When monitoring the PL emissions under the conditions of above-GaAs barrier excitation, the ODCR spectrum is dominated by the electron CR in GaAs with an effective mass value 0.066m0. The ODCR mechanism is discussed in terms of hot carrier effects, resulting in a reduced carrier recombination in GaAs and an enhanced carrier trapping in the GaNAs QW. Under resonant excitation of the GaNAs QWs, only a broad ODCR signal can be observed, corresponding to an effective mass value of 0.12m0 and 0.19m0 when the N composition is about 1.2 and 2%, respectively. This is attributed to the electron CR in the GaNAs QW with a lower electron mobility. This sizeable increase in the electron effective mass is in agreement with earlier theoretical predictions. ⌐ 2001 Elsevier Science B.V.

Place, publisher, year, edition, pages
2001. Vol. 82, no 1-3, 218-220 p.
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Natural Sciences Condensed Matter Physics
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URN: urn:nbn:se:liu:diva-45107DOI: 10.1016/S0921-5107(00)00681-4Local ID: 79716OAI: oai:DiVA.org:liu-45107DiVA: diva2:265969
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-03-27

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Chen, WeiminBuyanova, IrinaMonemar, Bo

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Natural SciencesCondensed Matter Physics

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