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Updated: Mar 8, 2026
Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
Published on: June 18, 2013
A dual-scale metal nanowire network transparent conductor for highly efficient and flexible organic light emitting
Jinhwan Lee1, Kunsik An2, Phillip Won3
1Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, Gwanak-gu, Seoul, South Korea. maxko@snu.ac.kr and Department of Electrical Engineering and Computer Science, the University of Michigan, Ann Arbor, Michigan 48109, USA.
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.
