Enhancement of the current efficiency of organic light-emitting devices due to the surface plasmonic resonance effect of dodecanethilol-functionalized Au nanoparticles |
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| Affiliation: | 1. Department of Green Energy & Semiconductor Engineering, Hoseo University, Asan, Republic of Korea;2. Center for Photovoltaic Materials, Korea University, Sejong, Republic of Korea;3. Department of Physics, Hong Kong Baptist University, Hong Kong, China;4. Department of Engineering Physics, McMaster University, Hamilton, Canada;1. Centre for Nanoscience and Nanotechnology, School of Physics, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620 024, India;2. Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan;1. Department of Green Energy & Semiconductor Engineering, Hoseo University, Asan, Republic of Korea;2. Center for Photovoltaic Materials, Korea University, Sejong, Republic of Korea;3. Department of Engineering Physics, McMaster University, Hamilton, Canada |
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| Abstract: | The photoluminescence intensity of the dodecanethilol-functionalized Au (DDT-Au) nanoparticle (NP) layer/4,4′-cyclohexylidenebisN,N-bis(4-methylphenyl)benzenamine] (TAPC)/4,4′-bis(N-carbazolyl)-1,1′-biphenyl:tris(2-phenylpyridine)iridium (III) (CPB:Ir(ppy)3) film was increased by about 1.15 times compared to that of the TAPC/CPB:Ir(ppy)3 film due to the effect of coupling between the excitons in the emitting layer and a localized surface plasmonic resonance (LSPR) in the DDT-Au NPs. The current efficiency of the organic light-emitting devices (OLEDs) with the DDT-Au NP layer at 100 cd/m2 was 14.9 cd/A larger than that without the DDT-Au NP layer, resulting in an enhancement of the out-coupling efficiency. The increase in the current efficiency of the OLEDs with a DDT-Au NP layer was attributed to the enhanced out-coupling efficiency due to the existence of the LSPR generated by the DDT-Au NPs. |
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| Keywords: | Localized surface plasmonic resonance Organic light-emitting devices Optical devices DDT-Au nanoparticles |
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