Lonne, Quentin , ENDRINO ARMENTEROS, JOSÉ LUIS, Huang, Zhaorong
Si
Nanoscale Res. Lett.
Article
Científica
3.125
0.713
30/10/2017
000414325800001
2-s2.0-85032585010
Copper nanowires have the potential to reach and even exceed the indium tin oxide performances as flexible transparent conductive electrodes. However, for a large-scale production, they need to be fabricated in a high-speed, low-cost way, without degrading the flexible substrate. One of the major bottlenecks resides in the post-treatment used to remove organic residues from the surface of the nanowires after forming the transparent electrode, which is necessary to obtain high optoelectronic performances. Here, we propose an ultra-violet irradiation and a subsequent acetic acid bath as an easy, scalable, fast post-treatment. After only 2 min of ultra-violet treatment, followed by 10 min of acid bath, an Rs of 42 Omega sq(-1) and a T-550 (nm) of 87% were measured. Besides, copper nanowire electrodes maintained their high transparency in the range 750-2500 nm, which makes them good candidates for applications such as infrared solar cells.
Copper nanowires; Transparent conductive electrodes; Ultra-violet treatment