Optically excited exciton transfer of spherical quantum dots via optical near-field ınteractions
American Physical Society March Meeting 2012
American Physical Society
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We study a system composed of a mixture of different-sized spherical quantum dots (QDs) involving optical near-field (ONF) interactions to induce effective optical excitation transfer. Here energy transfer was explained by resonant energy transfer via the optical near-field interaction between the first excited state of small QDs and the second excited state of large QDs. The energy transfer in a film of different-sized QDs made of CdTe and CdSe were experimentally demonstrated. An analysis between the optical near field transfer rate  and F¨orster type transfer rate was made. The proper understanding of the exciton transfer between these QDs is important for the design and implementation of near-field photonic devices employing them.  M. Ohtsu, et al., Principles of Nanophotonics, CRC Press (2008).
Published Version (Please cite this version)http://meetings.aps.org/link/BAPS.2012.MAR.A18.9
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