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Copper Nanowires as Fully Transparent Conductive Electrodes

2013; Nature Portfolio; Volume: 3; Issue: 1 Linguagem: Inglês

10.1038/srep02323

2045-2322

Huizhang Guo, Na Lin, Yuanzhi Chen, Zhenwei Wang, Qingshui Xie, Tongchang Zheng, Na Gao, Shuping Li, Junyong Kang, Duanjun Cai, Dong‐Liang Peng,

Nanowire Synthesis and Applications

In pondering of new promising transparent conductors to replace the cost rising tin-doped indium oxide (ITO), metal nanowires have been widely concerned. Herein, we demonstrate an approach for successful synthesis of long and fine Cu nanowires (NWs) through a novel catalytic scheme involving nickel ions. Such Cu NWs in high aspect ratio (diameter of 16.2 ± 2 nm and length up to 40 μm) provide long distance for electron transport and, meanwhile, large space for light transmission. Transparent electrodes fabricated using the Cu NW ink achieve a low sheet resistance of 1.4 Ohm/sq at 14% transmittance and a high transparency of 93.1% at 51.5 Ohm/sq. The flexibility and stability were tested with 100-timebending by 180°and no resistance change occurred. Ohmic contact was achieved to the p- and n-GaN on blue light emitting diode chip and bright electroluminescence from the front face confirmed the excellent transparency.