文档介绍：ARTICLE IN PRESS
Journal of Crystal Growth 283 (2005) 141–146
ate/jcrysgro
Nucleation and growth behavior of well-aligned ZnO nanorods
anic substrates in aqueous solutions
Chin-ChingLin a, San-Yuan Chena,Ã, Syh-Yuh Chengb
aDepartment of Materials Science and Engineering, National Chiao Tung University, 1001 Ta-hsueh Rd., Hsinchu, Taiwan
bMaterials Research Laboratories, Industrial Technology Research Institution, Chutung. Taiwan
Received 1 October 2004; received in revised form 13 May 2005; accepted 20 May 2005
Available online 21 July 2005
Communicted by . Redwing
Abstract
A low-temperature synthetic route was used to prepare well-aligned arrays of oriented ZnO nanorods anic
substrates coated with polystyrene beads (PS) in an aqueous solution. The correspondinggrowthbehavior and
photoluminescence properties of ZnO nanorods were analyzed. It was found that the ZnO nanorods are initially
nucleated from the ZnO monolayer under the concave regions of the PS layers and preferentially grown along [0 0 0 1]
direction. High-resolution transmission electron microscopy (HRTEM) observation reveals that the ZnO nanorods
tend to coalesce together with other adjacent nanorods to form a larger ZnO crystal in the later growth stage. The
room-temperature photoluminescence spectra demonstrate that a stronger ultraviolet (UV) emission with a broad
yellow emission