Periodic Growth of ZnO Nanorod Arrays on Two-Dimensional SiNx Nanohole Templates by Electrochemical Deposition

J. Phys. Chem. C, 112 (11), 4129 -4133, 2008. 10.1021/jp7102947 S1932-7447(71)00294-2
Web Release Date: February 23, 2008

Periodic Growth of ZnO Nanorod Arrays on Two-Dimensional SiN_x Nanohole Templates by Electrochemical Deposition

Seong Kyong Park, Young Kwang Lee, Hyon Tae Kwak, Chan Ryang Park, Jeunghee Park, and Young Rag Do*

Department of Chemistry, Kookmin University, Seoul 136-702, Korea, and Department of Advanced Material Chemistry, Korea University, Jochiwon 339-700, Korea

Received: October 24, 2007

In Final Form: January 4, 2008

Abstract:

Precisely positioned and spatially separated ZnO nanorod arrays were fabricated on holographically predefined two-dimensional (2D) SiN_x nanohole-array-coated Pt/Si substrates using a simple electrochemical deposition process. The stems of the 2D nanohole-assisted ZnO nanorods had a single-crystal nature and a preferred (002) growth direction but polycrystalline contact with the Pt surface. This approach provides a facile large-scale method for fabricating periodic nanohole-supported ZnO nanorods at low growth temperatures (90 C). The enhanced UV emission from these nanorods was associated with a lower defect density in the nanohole-templated ZnO nanorods, which was achieved by electrochemical deposition on a 2D nanohole array at a potential of -1.0 V for 30 min.

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