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Temperature-dependent exciton polariton photoluminescence in ZnO films
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
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2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 69, no 16, 165205- p.Article in journal (Refereed) Published
Abstract [en]

The polarized photoluminescence (PL) in a (0001) oriented ZnO epitaxial film is studied in the temperature range 4.5-250 K. We report the evidence of exciton polariton emission between 50 and 130 K. In this range the PL of mixed polariton modes is detected in the geometry of an extraordinary beam, realized by the use of a large-aperture microobjective collecting light from the cleaved sample edge at different angles with respect to the. c axis. The elevated temperatures facilitate the polariton emission due to the thermal population of both A and B exciton branches and the enhanced polariton scattering into the photonlike mixed modes.

Place, publisher, year, edition, pages
2004. Vol. 69, no 16, 165205- p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-44029DOI: 10.1103/PhysRevB.69.165205Local ID: 75463OAI: diva2:264890
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2015-01-23

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Choubina, TatianaKarlsson, FredrikHoltz, Per-OlofMonemar, Bo
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The Institute of TechnologyDepartment of Physics, Chemistry and BiologySemiconductor Materials
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