Title of article
Photoluminescence quenching and enhancement of CdSe/PMMA composite on Au colloids
Author/Authors
Lu، نويسنده , , Liu and Chen، نويسنده , , Daifen and Sun، نويسنده , , Fangwen and Ren، نويسنده , , Xifeng and Han، نويسنده , , Zhengfu and Guo، نويسنده , , Guangcan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
6
From page
71
To page
76
Abstract
The effects of metallic nanoparticles (NPs) size, excitation wavelength, and fluorescence wavelength on surface plasmon enhanced photoluminescence (PL) have been investigated. The PL of CdSe nanocrystals on Au colloids changes from quenching to enhancement as the size of Au NPs increases from 25 to 45 nm. For the Au NPs larger than 45 nm, the PL enhancement occurs and the enhancement factor is found to be dependent on Au NPs size and excitation wavelength. Besides Au NPs size, the fluorescence wavelength of CdSe nanocrystals is also observed to affect the competition between PL quenching and enhancement.
Journal title
Chemical Physics Letters
Serial Year
2010
Journal title
Chemical Physics Letters
Record number
1929135
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