DOI: 10.1063/1.1646440. Growth mechanism and properties of ZnO nanorods synthesized by plasma-enhanced chemical vapor deposition

Growth mechanism and properties of ZnO nanorods synthesized by plasma-enhanced chemical vapor deposition

10.1063/1.1646440

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Uniformly distributed ZnO nanorods have been grown by plasma-enhanced chemical vapor deposition using a two-step process. By controlling the oxygen content in the gas mixture during the nucleation and growth steps, no catalyst is required for the formation of ZnO nanorods. High-resolution transmission electron microscopy studies show that ZnO nanorods are single crystals and that they grow along the c axis of the crystal plane. Alignment of these nanorods with respect to the substrates depends on the lattice mismatch between ZnO and the substrate, the surface electric field, and the amount of defects in the starting nuclei. Room-temperature photoluminescence measurements of these ZnO nanorods have shown ultraviolet peaks at 380 nm with a full width at half-maximum of 106 meV, which are comparable to those found in high-quality ZnO films. Photoluminescence measurements of annealed ZnO nanorods in hydrogen and oxygen atmospheres indicate that the origins of green emission are oxygen vacancies and zinc interstitials, while oxygen interstitials are responsible for the orange-red emission. A mechanism for the nanorod growth is proposed.

Bibliography

Liu, X., Wu, X., Cao, H., & Chang, R. P. H. (2004). Growth mechanism and properties of ZnO nanorods synthesized by plasma-enhanced chemical vapor deposition. Journal of Applied Physics, 95(6), 3141â3147.

Authors 4

Xiang Liu (first)
Xiaohua Wu (additional)
Hui Cao (additional)
R. P. H. Chang (additional)

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Dates

Type	When
Created	21 years, 6 months ago (Feb. 26, 2004, 1:22 p.m.)
Deposited	1 year, 6 months ago (Feb. 7, 2024, 6:47 p.m.)
Indexed	21 hours, 25 minutes ago (Sept. 4, 2025, 9:18 a.m.)
Issued	21 years, 5 months ago (March 15, 2004)
Published	21 years, 5 months ago (March 15, 2004)
Published Print	21 years, 5 months ago (March 15, 2004)

Funders 0

None

BibTeX

@article{Liu_2004, title={Growth mechanism and properties of ZnO nanorods synthesized by plasma-enhanced chemical vapor deposition}, volume={95}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1646440}, DOI={10.1063/1.1646440}, number={6}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Liu, Xiang and Wu, Xiaohua and Cao, Hui and Chang, R. P. H.}, year={2004}, month=mar, pages={3141–3147} }

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