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Synthesis and Cathodoluminescence Study of Well-Aligned Planar-Tip and Tapered-Tip ZnO Nanorods

Journal Advances in Science and Technology (Volume 51)
Volume Disclosing Materials at the Nanoscale
Edited by P. VINCENZINI and G. MARLETTA
Pages 38-41
DOI 10.4028/www.scientific.net/AST.51.38
Citation J.H. He et al., 2006, Advances in Science and Technology, 51, 38
Online since October, 2006
Authors J.H. He, C.W. Wang, K.F. Liao, Lih Juann Chen
Keywords Cathodoluminescence, Nanorod, Zinc Oxide ZnO
Abstract

Vertically aligned ZnO nanorods have been synthesized on a-plane sapphire via a metal catalyzed vapor phase transport and condensation process in a two-zone vacuum furnace. Planar-tip ZnO nanorods were synthesized using commercial ZnO and graphite powder as the source of Zn vapor controlled by a simple vapor-liquid-solid (VLS) process. On the other hand, tapered-tip ZnO nanorods were synthesized from pure ZnO powder governed by both VLS and vapor-solid processes. From room temperature cathodoluminescence measurements, planar-tip ZnO nanorods are applicable for room temperature UV nanolasers.

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