title: Size control of ZnO nanorod arrays grown by metalorganic chemical vapour deposition.
abstract: The size control of vertically aligned ZnO nanorod arrays (NRAs) grown by catalyst-free metalorganic chemical vapour deposition is accomplished by changing the O/Zn precursor ratio. At a higher O/Zn precursor ratio, fat ZnO NRAs with excellent alignment are produced. In contrast, slim ZnO NRAs that are considerably less well aligned grow at a lower O/Zn precursor ratio. Irrespective of their different sizes and alignments, the individual ZnO nanorods are of a defect-free single-crystalline nature and of high optical quality, indicating that changing the precursor ratio is a promising way of fabricating size-controlled ZnO NRAs.
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, Korea.
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Park
authors.forename: Dong Ju
authors.initials: DJ
authors.lastname: Lee
authors.forename: Sang Sub
authors.initials: SS
authors.lastname: Kim