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Issue 5, 2017
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A dual-scale metal nanowire network transparent conductor for highly efficient and flexible organic light emitting diodes

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Abstract

Although solution processed metal nanowire (NW) percolation networks are a strong candidate to replace commercial indium tin oxide, their performance is limited in thin film device applications due to reduced effective electrical areas arising from the dimple structure and percolative voids that single size metal NW percolation networks inevitably possess. Here, we present a transparent electrode based on a dual-scale silver nanowire (AgNW) percolation network embedded in a flexible substrate to demonstrate a significant enhancement in the effective electrical area by filling the large percolative voids present in a long/thick AgNW network with short/thin AgNWs. As a proof of concept, the performance enhancement of a flexible phosphorescent OLED is demonstrated with the dual-scale AgNW percolation network compared to the previous mono-scale AgNWs. Moreover, we report that mechanical and oxidative robustness, which are critical for flexible OLEDs, are greatly increased by embedding the dual-scale AgNW network in a resin layer.

Graphical abstract: A dual-scale metal nanowire network transparent conductor for highly efficient and flexible organic light emitting diodes

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Article information


Submitted
24 Dec 2016
Accepted
09 Jan 2017
First published
20 Jan 2017

Nanoscale, 2017,9, 1978-1985
Article type
Paper

A dual-scale metal nanowire network transparent conductor for highly efficient and flexible organic light emitting diodes

J. Lee, K. An, P. Won, Y. Ka, H. Hwang, H. Moon, Y. Kwon, S. Hong, C. Kim, C. Lee and S. H. Ko, Nanoscale, 2017, 9, 1978
DOI: 10.1039/C6NR09902E

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