Applied Physics B

, Volume 93, Issue 1, pp 199–202

Controlling the energy transfer between near-field optically coupled ZnO quantum dots

Article

Abstract

We performed time-resolved spectroscopy of ZnO quantum dots (QD), and observed exciton energy transfer and dissipation between QD via an optical near-field interaction. Two different sizes of ZnO QD with resonant energy levels were mixed to test the energy transfer and dissipation using time-resolved photoluminescence spectroscopy. The estimated energy transfer time was 144 ps. Furthermore, we demonstrated that the ratio of energy transfer between the resonant energy states could be controlled.

PACS

78.67.Hc 81.07.Ta 

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.Graduate School of EngineeringThe University of TokyoTokyoJapan
  2. 2.Solution-Oriented Research for Science and Technology (SORST)Japan Science and Technology AgencyTokyoJapan

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