In this work, we report highly uniform growth of template-assisted electrodeposited copper nanowires on a large area by lowering the deposition temperature down to subzero centigrade. Even with highly disordered commercial porous anodic aluminum oxide template and conventional potentiostatic electrodeposition, length uniformity over 95% can be achieved when the deposition temperature is lowered down to -2.4°C. Decreased diffusion coefficient and ion concentration gradient due to the lowered deposition temperature effectively reduces ion diffusion rate, thereby favors uniform nanowire growth. Moreover, by varying the deposition temperature, we show that also the pore nucleation and the crystallinity can be controlled.
Bibliographical noteFunding Information:
This study was supported by Mid-career Researcher Program through NRF grant funded by the MEST (No. 2011-0000252 and No. 2011-0017673). The authors greatly appreciate Ha-Yeong Kim for valuable effort on help with the XRD measurements.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics