Special Section on Nanophotonics in Japan

Observation of dissipated optical energy transfer between CdSe quantum dots

[+] Author Affiliations
Wataru Nomura

University of Tokyo

Takashi Yatsui

Japan Science and Technology Agency

Tadashi Kawazoe, Motoichi Ohtsu

University of Tokyo

J. Nanophoton. 1(1), 011591 (November 5, 2007). doi:10.1117/1.2817657
History: Received August 6, 2007; Revised September 20, 2007; Accepted October 1, 2007; November 5, 2007; Online November 05, 2007
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Abstract

Exciton energy transfer between quantum dots via an optical near-field and subsequent dissipation was observed. Two sizes of CdSe/ZnS quantum dots with resonant energy levels were mixed to confirm the energy transfer and dissipation using time-resolved photoluminescence spectroscopy. It was estimated that the energy transfer time was 135 ps, which is shorter than the exciton lifetime of 2.10 ns. This indicates that CdSe quantum dots are promising material for nanophotonic devices.

© 2007 Society of Photo-Optical Instrumentation Engineers

Citation

Wataru Nomura ; Takashi Yatsui ; Tadashi Kawazoe and Motoichi Ohtsu
"Observation of dissipated optical energy transfer between CdSe quantum dots", J. Nanophoton. 1(1), 011591 (November 5, 2007). ; http://dx.doi.org/10.1117/1.2817657


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