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Low-temperature Synthesis of One-dimensional ZnO Nanostructures on Screen-printed Carbon Nanotube Films
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- Authors
- Seung-Sik Park, Jin-Moo Lee, Seung-Il Yoon, Dong-Gu Lee, Sung-Jin Kim, Sang-Hyeob Kim, Sung Lyul Maeng, Sang-Woo Kim
- Issue Date
- 2008-05
- Citation
- Physica E : Low-dimensional Systems and Nanostructures, v.40, no.7, pp.2526-2530
- ISSN
- 1386-9477
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Project Code
- 06MB4700, IT-BT-NT Convergent Core Technology for advanced Optoelectronic Devices and Smart Bio/Chemical Sensors, Maeng Sunglyul
- Abstract
- One-dimensional (1D) ZnO nanostructures including nanowires, nanobelts, and nanorods were synthesized on screen-printed multi-walled carbon nanotube (MW-CNT) films in a thermal chemical vapor deposition process by gold (Au) nanoparticle-catalyst and self-catalyst driving at low temperatures of 400 and 500 °C. ZnO nanowires and nanobelts by introducing Au nanoparticles were grown via the vapor-liquid-solid (VLS) mechanism, while ZnO nanorods were realized via a self-catalytic VLS process. It was found that the diameter of ZnO nanowires strongly depends on that of Au nanoparticles, indicating the typical metal catalyst-driving VLS process. On the other hand, ZnO nanorods without Au-alloyed tips are comprised of hexagonal facets, suggesting self-catalytic VLS formation of the ZnO nanorods on the MW-CNT films. Room temperature photoluminescence spectra of the 1D ZnO nanostructures exhibit an ultraviolet emission band around 378 nm and deep-level emission band centered around 505 nm. © 2007 Elsevier B.V. All rights reserved.
- KSP Keywords
- 1D ZnO, 5 nm, Au nanoparticles(Au-NPs), CNT films, Carbon nano-tube(CNT), Carbon nanotube films, Chemical vapor deposition process, Chemical vapour deposition(CVD), Deep-level emission, Emission band, Low temperature(LT)