Nano Archive

Growth of aligned ZnO nanorods and nanopencils on ZnO/Si in aqueous solution: growth mechanism and structural and optical properties

Ahsanulhaq, Q and Umar, A and Hahn, Y. B. (2007) Growth of aligned ZnO nanorods and nanopencils on ZnO/Si in aqueous solution: growth mechanism and structural and optical properties. Nanotechnology, 18 (11). 115603 (7pp).

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Official URL: http://stacks.iop.org/0957-4484/18/115603

Abstract

Well-aligned ZnO nanorod and nanopencil arrays were synthesized in a high density on ZnO/Si substrate by a low-temperature aqueous solution technique. Detailed structural characterizations revealed that the as-synthesized nanorods and nanopencils were single crystalline, with a hexagonal phase, and with growth along the [0001] direction. The room-temperature photoluminescence spectra showed a strong ultraviolet emission at 381~nm, a weak blue band at 460~nm, and a broad green emission at 580~nm. A detailed growth mechanism has been proposed for the formation of nanorods and nanopencils based on the different crystallographic habits of wurtzite hexagonal ZnO.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
ID Code:288
Deposited By:Lesley Tobin
Deposited On:27 Nov 2008 15:47
Last Modified:26 Mar 2009 17:40

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