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Hybrid metal grid-polymer-carbon nanotubes electrodes for high luminance organic light emitting diodes

Sam, FLM, Dabera, GDMR, Lai, KT, Mills, CA, Rozanski, LJ and Silva, SRP (2014) Hybrid metal grid-polymer-carbon nanotubes electrodes for high luminance organic light emitting diodes Nanotechnology, 25 (34), 345202.

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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 transparent conducting electrode (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/m2 at 9 V; the same as the reference indium tin oxide (ITO) OLED. The gold grid/rrP3HT-SWCNT OLEDs have a lower luminance of 8,260 cd/m2 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 (OPVs). 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: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Authors :
AuthorsEmailORCID
Sam, FLMUNSPECIFIEDUNSPECIFIED
Dabera, GDMRUNSPECIFIEDUNSPECIFIED
Lai, KTUNSPECIFIEDUNSPECIFIED
Mills, CAUNSPECIFIEDUNSPECIFIED
Rozanski, LJUNSPECIFIEDUNSPECIFIED
Silva, SRPUNSPECIFIEDUNSPECIFIED
Date : 30 June 2014
Identification Number : 10.1088/0957-4484/25/34/345202
Uncontrolled Keywords : carbon nanotube, hybrid, organic light emitting diode, metal grid
Related URLs :
Additional Information : Copyright 2014 Institute of Physics. This is the author's accepted manuscript.
Depositing User : Symplectic Elements
Date Deposited : 20 Aug 2014 14:33
Last Modified : 06 Aug 2015 01:08
URI: http://epubs.surrey.ac.uk/id/eprint/805779

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