Share Email Print
cover

Proceedings Paper

Blinking suppression and anti-bunching of quantum dots as single-photon sources
Author(s): Pyng Yu; Chi-Tsu Yuan; Hsien-Chien Ko; Jane Huang; Jau Tang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We report here our study on suppression of fluorescence blinking of colloidal CdSe/ZnS quantum dots (QDs) for potential applications as high performance single-photon sources. Blinking is an interesting property for single QDs, but it is undesirable for their applications. We have demonstrated that by coupling these QDs to adjacent silver nanoprisms, we could not only completely suppress the blinking but also enhance the fluorescence quantum yield, and also increase the fluorescence decay rates. These single QDs also exhibit anti-bunching behavior which is a signature for a single-photon emitter. In addition, we have also achieved blinking suppression by embedded the QDs in agarose gel. The electrostatic environment around QDs due to negatively charged fibers of gel might strongly affect the extent of blinking suppression. The mechanisms of blinking suppression will be discussed in the frame work of diffusion-controlled electron transfer model.

Paper Details

Date Published: 23 January 2010
PDF: 9 pages
Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 76082I (23 January 2010); doi: 10.1117/12.840801
Show Author Affiliations
Pyng Yu, Research Ctr. for Applied Sciences, Academia Sinica (Taiwan)
National Chiao-Tung Univ. (Taiwan)
Chi-Tsu Yuan, Research Ctr. for Applied Sciences, Academia Sinica (Taiwan)
National Chiao-Tung Univ. (Taiwan)
Hsien-Chien Ko, Research Ctr. for Applied Sciences, Academia Sinica (Taiwan)
National Chiao-Tung Univ. (Taiwan)
Jane Huang, Research Ctr. for Applied Sciences, Academia Sinica (Taiwan)
National Chiao-Tung Univ. (Taiwan)
Jau Tang, Research Ctr. for Applied Sciences, Academia Sinica (Taiwan)
National Chiao-Tung Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7608:
Quantum Sensing and Nanophotonic Devices VII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

© SPIE. Terms of Use
Back to Top