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Hybrid metal grid-polymer-carbon nanotube electrodes for high luminance organic light emitting diodes
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Sam, F Laurent M., Dabera, Dinesha, Lai, Khue T., Mills, Christopher A., Rozanski, Lynn J. and Silva, S Ravi P. (2014) Hybrid metal grid-polymer-carbon nanotube electrodes for high luminance organic light emitting diodes. Nanotechnology, 25 (34). 345202. doi:10.1088/0957-4484/25/34/345202 ISSN 0957-4484.
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Official URL: http://dx.doi.org/10.1088/0957-4484/25/34/345202
Abstract
Organic light emitting diodes (OLEDs) incorporating grid transparent conducting electrodes (TCEs) with wide grid line spacing suffer from an inability to transfer charge carriers across the gaps in the grids to promote light emission in these areas. High luminance OLEDs fabricated using a hybrid TCE composed of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS PH1000) or regioregular poly(3-hexylthiophene)-wrapped semiconducting single-walled carbon nanotubes (rrP3HT-SWCNT) in combination with a nanometre thin gold grid are reported here. OLEDs fabricated using the hybrid gold grid/PH1000 TCE have a luminance of 18 000 cd m−2 at 9 V; the same as the reference indium tin oxide (ITO) OLED. The gold grid/rrP3HT-SWCNT OLEDs have a lower luminance of 8260 cd m−2 at 9 V, which is likely due to a rougher rrP3HT-SWCNT surface. These results demonstrate that the hybrid gold grid/PH1000 TCE is a promising replacement for ITO in future plastic electronics applications including OLEDs and organic photovoltaics. For applications where surface roughness is not critical, e.g. electrochromic devices or discharge of static electricity, the gold grid/rrP3HT-SWCNT hybrid TCE can be employed.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||
| Journal or Publication Title: | Nanotechnology | ||||||
| Publisher: | Institute of Physics Publishing Ltd. | ||||||
| ISSN: | 0957-4484 | ||||||
| Official Date: | 6 August 2014 | ||||||
| Dates: |
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| Volume: | 25 | ||||||
| Number: | 34 | ||||||
| Article Number: | 345202 | ||||||
| DOI: | 10.1088/0957-4484/25/34/345202 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access |
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