Observation of dark exciton luminescence from ZnO nanocrystals in the quantum confinement regime


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/45497

Title:	Observation of dark exciton luminescence from ZnO nanocrystals in the quantum confinement regime
Authors:	Yamamoto, Sekika Browse this author
Authors:	Mishina, Tomobumi Browse this author
Issue Date:	15-Apr-2011
Publisher:	American Physical Society
Journal Title:	Physical Review B
Volume:	83
Issue:	16
Start Page:	165435
Publisher DOI:	10.1103/PhysRevB.83.165435
Abstract:	Time-resolved luminescence measurements are performed on high-quality ZnO nanocrystals in a quantum confinement regime prepared by fast cooling and succeeding surface passivation. A very long luminescence lifetime of ～0.1 μs, which is indicative of the existence of a dark exciton state, is observed. The temperature dependence of the lifetime and the luminescence peak energy is successfully accounted for by a thermal equilibrium model of excitonic dark and bright states.
Rights:	©2011 American Physical Society
Type:	article
URI:	http://hdl.handle.net/2115/45497
Appears in Collections:	理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山本夕可

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