Open AccessEfficiency enhancement of organic light-emitting devices due to a localized surface plasmonic resonance effect of poly(4-butylphenyl-diphenyl-amine):dodecanethiol functionalized Au nanocomposites
Author(s) -
Dae Hun Kim,
Tae Whan Kim
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.011211
Subject(s) - materials science , photoluminescence , oled , nanocomposite , surface plasmon resonance , layer (electronics) , optoelectronics , nanoparticle , resonance (particle physics) , green light , exciton , nanotechnology , blue light , physics , particle physics , quantum mechanics
Organic light-emitting devices (OLEDs) were fabricated utilizing a poly(4-butylphenyl-diphenyl-amine) (poly-TPD):dodecanethiol functionalized Au (DDT-Au) nanocomposite (NC) layer to enhance their current efficiency. The photoluminescence intensity of the poly-TPD:DDT-Au NC film at 514 nm was significantly increased, being about 1.3 times that of the poly-TPD film due to the coupling between the excitons in the emitting layer and the localized surface plasmonic resonance of the DDT-Au nanoparticles. The current efficiency of the green OLEDs with a poly-TPD:DDT-Au NC layer at 1000 cd/m2 was 3.1 cd/A larger than that with a poly-TPD layer, resulting in an enhanced out-coupling efficiency due to the coupling effect.