Lateral arrays of vertical ZnO nanowalls on a periodically polarity-inverted ZnO template.
Well aligned ZnO nanowall arrays with submicron pitch were grown on a periodically polarity-inverted ZnO template using a carbothermal reduction process. Under the conditions of a highly dense Au catalyst for increasing nucleation sites, ZnO nanowalls with a thickness of 126 +/- 10 nm, an average height of 3.4 microm, and a length of about 10 mm were formed on the template. The nanowalls were only grown on a Zn-polar surface due to a different growth mode with an O-polar surface. The results of x-ray diffraction and photoluminescence (PL) measurements revealed a single crystalline, vertical alignment on the template, and a large surface to volume ratio of the ZnO nanowalls.
Lee
Sang Hyun
SH
Center of Interdisciplinary Research, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan. shlee7579@gmail.com
Minegishi
Tsutomu
T
Ha
Jun-Seok
JS
Park
Jin-sub
JS
Lee
Hyo-Jong
HJ
Lee
Hyun Jung
HJ
Shiku
Hitoshi
H
Matsue
Tomokazu
T
Hong
Soon-Ku
SK
Jeon
Heonsu
H
Yao
Takafumi
T