Exciton Luminescence Dynamics in ZnO Crystal Observed under One- and Two-Photon Excitation

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概要

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• Free-exciton luminescence dynamics at the surface and deep inside of a ZnO single crystal are investigated by one- and two-photon excitation mothods. The free-exciton lifetime is carefully evaluated at each position by considering the excitonic diffusion effect and the trapping process inside the sample. The obtained temperature dependence of the lifetime indicates that the photon recycling effect dominates the exciton lifetime inside the sample while the K-selection rule determines the lifetime at the surface.

• 2010-12-25

著者

• Yamamoto Sekika

  Department Of Physics College Of General Education Osaka University

• Sakuma Hikari

  Department of Physics, Graduate School of Science, Hokkaido University, N10W8, Sapporo 060-0810, Japan

• Yamamoto Sekika

  Department of Physics, Graduate School of Science, Hokkaido University, N10W8, Sapporo 060-0810, Japan

• Mishina Tomobumi

  Department of Physics, Graduate School of Science, Hokkaido University, N10W8, Sapporo 060-0810, Japan

関連論文

• Exciton Luminescence Dynamics in ZnO Crystal Observed under One- and Two-Photon Excitation
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