Controlling the energy transfer between near-field optically coupled ZnO quantum dots
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- Yatsui, T., Jeong, H. & Ohtsu, M. Appl. Phys. B (2008) 93: 199. doi:10.1007/s00340-008-3154-8
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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.