Surface plasmon-waveguide hybrid polymer light-emitting devices using hexagonal Ag dots

We investigated surface plasmon-waveguide hybrid resonances for enhancement of light emission in polymer light-emitting diodes (PLEDs). Hybrid waveguide-plasmon resonances in the visible range for waveguide mode and near IR range for surface plasmons were observed by incorporation of hexagonal Ag do...

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Bibliographic Details
Published in:Optics letters 2012-03, Vol.37 (5), p.761-763
Main Authors: Cho, Kwan Hyun, Kim, Jin Yeong, Choi, Dae-Geun, Lee, Ki-Jung, Choi, Jun-Hyuk, Choi, Kyung Cheol
Format: Article
Language:English
Subjects:
Arrays
Electroluminescence
Lattice parameters
Lattice vibration
Plasmons
Silver
Waveguides
Wavelengths
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Summary:We investigated surface plasmon-waveguide hybrid resonances for enhancement of light emission in polymer light-emitting diodes (PLEDs). Hybrid waveguide-plasmon resonances in the visible range for waveguide mode and near IR range for surface plasmons were observed by incorporation of hexagonal Ag dot arrays. Considerable overlap between the emission wavelength of the PLEDs and the waveguide mode by an Ag dot array with a lattice constant of 500 nm was observed. Because of enhanced light extraction by Bragg scattering of waveguide modes, photoluminescence (PL) and electroluminescence (EL) were increased by 70% and 50%, respectively.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.37.000761