Eur. Phys. J. Appl. Phys.
Volume 42, Number 2, May 2008
|Page(s)||109 - 112|
|Section||Nanomaterials and Nanotechnologies|
|Published online||28 March 2008|
Enhanced radiative emission rate of CdSe/ZnS quantum dots on semi-continuous gold films
Department of Physics, Wuhan University, Wuhan 430072, P.R. China
2 Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P.R. China
Corresponding author: email@example.com
Revised: 7 December 2007
Accepted: 21 January 2008
Published online: 28 March 2008
We have studied the enhancement of radiative emission rate of CdSe/ZnS core-shell quantum dots on semi-continuous gold films which have been prepared by using sputtering technique. The photoluminescence intensity and the decay rate of CdSe/ZnS quantum dots are affected by the semi-continuous gold films. Both the photoluminescence intensity and the decay rate of the quantum dots are greatly enhanced by the semi-continuous gold films near the conductive percolation threshold and that are caused by the enhanced local electric field due to the surface plasmon resonance on the semi-continuous gold films.
PACS: 78.55.-m – Photoluminescence, properties and materials / 78.67.Hc – Quantum dots
© EDP Sciences, 2008
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