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Journal of Nanomaterials
Volume 2013, Article ID 841436, 5 pages
Research Article

Enhancement and Quenching of Fluorescence by Silver Nanoparticles in Organic Light-Emitting Diodes

1Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
2Department of Electronic Engineering, Fortune Institute of Technology, Kaohsiung 83160, Taiwan
3Department of Electronic Engineering, National Formosa University, Hu-Wei, Yunlin 63201, Taiwan
4Department of Applied Physics, National University of Kaohsiung, Kaohsiung 81148, Taiwan

Received 8 November 2013; Accepted 14 November 2013

Academic Editor: Liang-Wen Ji

Copyright © 2013 Ying-Chung Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The influence of silver nanoparticles (SNPs) on the performance of organic light-emitting diodes (OLEDs) is investigated in this study. The SNPs are introduced between the electron-transport layers by means of thermal evaporation. SNPs are found to have the surface plasmon resonance at wavelength 525 nm when the mean particle size of SNPs is 34 nm. The optimized OLED, in terms of the spacing between the emitting layer and SNPs, is found to have the maximum luminance 2.4 times higher than that in the OLED without SNPs. The energy transfer between exciton and surface plasmons with the different spacing distances has been studied.