Optical tuning of phosphors by plasmonic gold nanoparticles for phosphor-converted white light emitting diodes

We report a localized surface plasmonic enhanced phosphor using Au nanoparticles. The method is simple and widely used for various phosphor materials. When the localized surface plasmon resonance of Au nanoparticles matches the emission wavelength of the phosphor materials, the efficiency of the pho...

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Bibliographic Details
Published in:Applied physics letters 2014-10, Vol.105 (14)
Main Authors: Kim, Myeongcheol, Lee, Seong Min, Choi, Kyung Cheol
Format: Article
Language:English
Subjects:
Applied physics
Dependence
Emission
Gold
Nanoparticles
Organic light emitting diodes
Phosphors
White light
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Summary:We report a localized surface plasmonic enhanced phosphor using Au nanoparticles. The method is simple and widely used for various phosphor materials. When the localized surface plasmon resonance of Au nanoparticles matches the emission wavelength of the phosphor materials, the efficiency of the phosphor is enhanced. The phosphor luminance intensity is enhanced with the application of an optimum concentration of Au nanoparticles. In order to check the wavelength-dependent effect of localized surface plasmon resonance, we experimented with different phosphor materials, having emission wavelength peaks at 520 nm, 560 nm, and 620 nm. We found the differences in plasmonic enhancement by the wavelength dependency.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4898041