Metalorganic vapor-phase epitaxial growth of vertically well-aligned ZnO nanorods
Top Cited Papers
Open Access
- 3 June 2002
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 80 (22) , 4232-4234
- https://doi.org/10.1063/1.1482800
Abstract
We report metalorganic vapor-phase epitaxialgrowth and structural and photoluminescent characteristics of ZnOnanorods. The nanorods were grown on Al 2 O 3 (00⋅1) substrates at 400 °C without employing any metal catalysts usually needed in other methods. Electron microscopy revealed that nanorods with uniform distributions in their diameters, lengths, and densities were grown vertically from the substrates. The mean diameter of the nanorods is as narrow as 25 nm. In addition, x-ray diffraction measurements clearly show that ZnOnanorods were grown epitaxially with homogeneous in-plane alignment as well as a c-axis orientation. More importantly, from photoluminescencespectra of the nanorods strong and narrow excitonic emission and extremely weak deep level emission were observed, indicating that the nanorods are of high optical quality.Keywords
This publication has 18 references indexed in Scilit:
- Photoluminescent properties of ZnO thin films grown on SiO2/Si(100) by metal-organic chemical vapor depositionJournal of Electronic Materials, 2001
- Room-Temperature Ultraviolet Nanowire NanolasersScience, 2001
- Ultraviolet-emitting ZnO nanowires synthesized by a physical vapor deposition approachApplied Physics Letters, 2001
- Growth of large-scale GaN nanowires and tubes by direct reaction of Ga with NH3Applied Physics Letters, 2000
- Ordered semiconductor ZnO nanowire arrays and their photoluminescence propertiesApplied Physics Letters, 2000
- Self-Oriented Regular Arrays of Carbon Nanotubes and Their Field Emission PropertiesScience, 1999
- Excitonic ultraviolet laser emission at room temperature from naturally made cavity in ZnO nanocrytal thin filmsMaterials Science and Engineering: B, 1998
- Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin filmsApplied Physics Letters, 1998
- Effect of one monolayer of surface gold atoms on the epitaxial growth of InAs nanowhiskersApplied Physics Letters, 1992
- VAPOR-LIQUID-SOLID MECHANISM OF SINGLE CRYSTAL GROWTHApplied Physics Letters, 1964