Enhanced current efficiency of organic light-emitting devices due to a broad localized surface plasmonic resonance of Au-ZnO nanocomposites
- Authors
- Lee, Yong Hun; Kim, Dae Hun; Kim, Tae Whan
- Issue Date
- Nov-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Localized surface plasmonic resonance; Au-ZnO nanocomposites; Organic light-emitting devices; Au nanoparticles
- Citation
- APPLIED SURFACE SCIENCE, v.355, pp.359 - 363
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 355
- Start Page
- 359
- End Page
- 363
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156031
- DOI
- 10.1016/j.apsusc.2015.07.099
- ISSN
- 0169-4332
- Abstract
- Organic light-emitting devices (OLEDs) were fabricated with Au-ZnO nanocomposites (NCs) synthesized by using a sol-gel process in order to enhance their current efficiency. Photoluminescence (PL) and time-resolved PL spectra showed an enhanced fluorescence emission due to the localized surface plasmonic resonance (LSPR) of the Au-ZnO NCs. The electroluminescence intensity of the OLEDs with Au-ZnO NCs at a wavelength of 523 nm was significantly increased by a factor of 0.84 in comparison with that of the OLEDs with ZnO nanoparticles (NPs). The current efficiency of the OLEDs with Au-ZnO NCs at 50 mA/cm(2) was 0.46 cd/A higher than that of the OLEDs with ZnO NPs. The enhanced current efficiency in the OLEDs with Au-ZnO NCs was dominantly attributed to the existence of the LSPR due to the presence of the Au NPs in the ZnO layer.
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