Format

Send to

Choose Destination
Sci Rep. 2015 Jun 3;5:10715. doi: 10.1038/srep10715.

Cu mesh for flexible transparent conductive electrodes.

Author information

1
Department of Cogno-Mechatronics Engineering, Pusan National University, Miryang, 627-706 (Republic of Korea).
2
Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742 (United States).
3
Department of Nanofusion Engineering, Pusan National University, Busan, 609-735 (Republic of Korea).
4
1] Department of Cogno-Mechatronics Engineering, Pusan National University, Miryang, 627-706 (Republic of Korea) [2] Department of Nanofusion Engineering, Pusan National University, Busan, 609-735 (Republic of Korea).
5
Busan Center, Korea Basic Science Institute, Busan, 618-230 (Republic of Korea).
6
KAIST Analysis Center for Research Advancement, Daejeon, 305-701 (Republic of Korea).
7
Division of General Studies, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798 (Republic of Korea).
8
Frontier in Extreme Physics, Korea Research Institute of Standards and Science, Daejeon, 305-340, (Republic of Korea).

Abstract

Copper electrodes with a micromesh/nanomesh structure were fabricated on a polyimide substrate using UV lithography and wet etching to produce flexible transparent conducting electrodes (TCEs). Well-defined mesh electrodes were realized through the use of high-quality Cu thin films. The films were fabricated using radio-frequency (RF) sputtering with a single-crystal Cu target--a simple but innovative approach that overcame the low oxidation resistance of ordinary Cu. Hybrid Cu mesh electrodes were fabricated by adding a capping layer of either ZnO or Al-doped ZnO. The sheet resistance and the transmittance of the electrode with an Al-doped ZnO capping layer were 6.197 ohm/sq and 90.657%, respectively, and the figure of merit was 60.502 × 10(-3)/ohm, which remained relatively unchanged after thermal annealing at 200 °C and 1,000 cycles of bending. This fabrication technique enables the mass production of large-area flexible TCEs, and the stability and high performance of Cu mesh hybrid electrodes in harsh environments suggests they have strong potential for application in smart displays and solar cells.

Supplemental Content

Full text links

Icon for Nature Publishing Group Icon for PubMed Central
Loading ...
Support Center