Large-Scale Synthesis of Vertically Aligned ZnO Hexagonal Nanotube-Rod Hybrids Using a Two-Step Growth Method
- Title
- Large-Scale Synthesis of Vertically Aligned ZnO Hexagonal Nanotube-Rod Hybrids Using a Two-Step Growth Method
- Author
- 박원일
- Keywords
- NANOROD ARRAYS; SURFACE POLARITY; NANOWIRE ARRAYS; NANOSTRUCTURES; CATHODOLUMINESCENCE; HETEROSTRUCTURES; NANOWALLS; GAN
- Issue Date
- 2013-08
- Publisher
- Blackwell Publishing Ltd.
- Citation
- Journal of the American Ceramic Society,v.96 ,no.11,2013년, pp.3500 - 3503
- Abstract
- Zn-polar (0001) surfaces are more chemically reactive than other surfaces of ZnO crystals and drive preferential anisotropic and asymmetric growth along the [0001] direction, which facilitates growth of c-axis oriented, one-dimensional ZnO nanostructures. Accordingly, capping the top (0001) surface of ZnO crystals can impede c-axis growth and thus serve to modulate growth habits. In this study, we generated vertically aligned ZnO hexagonal nanotube-rod (h-NTR) hybrids by modulating growth habits during a second-stage process. Electron microscopy studies revealed the formation of very thin (10-20nm) single-crystalline nanotube walls along the edges of underlying hexagonal rod tops capped with Si. In addition, spatially resolved investigation of ZnO h-NTR indicated an abrupt increase in the measured bandgap across rod-tube junctions, which was ascribed to a quantum confinement effect and Burstein-Moss effect of carriers within the very thin nanotube walls.
- URI
- https://onlinelibrary.wiley.com/doi/abs/10.1111/jace.12507http://hdl.handle.net/20.500.11754/53990
- ISSN
- 0002-7820; 1551-2916
- DOI
- 10.1111/jace.12507
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML