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Effects of N incorporation on the electronic structure of GaNP: Origin of the 2.87 eV optical transition
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.ORCID iD: 0000-0001-7155-7103
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.ORCID iD: 0000-0002-6405-9509
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2005 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Temperature dependent photoluminescence excitation (PLE) spectroscopy is employed to evaluate basic physical properties of the 2.87 eV absorption peak, recently discovered (I. A. Buyanova et al, PRB 69, 201303 (2004)) in the GaNxP1-x alloys. Whereas appearance of this transition is found to be facilitated by incorporation of N and also H atoms, its intensity does not scale with N content. This questions a possible association of this feature with a N-related localized state. Based on the results of temperature dependent measurements, the involved state is concluded to have a non-$\Gamma $ character. Excitation of the known N-related localized states via this state is found to be non-selective, opposed to that between the N-related centers. The observed properties are shown to be hardly consistent with those predicted for the higher lying localized state of the isolated N atom derived from the Γ conduction band minimum (CBM). Alternative explanations for the ``2.87 eV'' state as being due to either a t2 component of the X3c (or L1c CBM or a level arising from a complex of N and H (in some form) are also discussed.

Place, publisher, year, edition, pages
Bulletin of the American Physical Society, vol. 50, 2005. Vol. 50, 1055-1055 p.
National Category
Natural Sciences Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-30794Local ID: 16421OAI: oai:DiVA.org:liu-30794DiVA: diva2:251617
Conference
2005 APS March Meeting
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-03-27

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http://meetings.aps.org/Meeting/MAR05/Event/22962

Authority records BETA

Buyanova, IrinaIzadifard, MortezaChen, Weimin

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