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UV Emission from Patterned Growth of ZnO Nanowires

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Abstract:

Patterned and high-density ZnO nanowires were fabricated on a large area P type silicon (100) through Vapor–Liquid–Solid approach. An aluminium mask was used for the patterned deposition of gold catalyst. ZnO nanowires grown with the aid of gold catalyst were well aligned and had dimensions of 30–80 nm diameter and 0.5–2 m length. The perfect crystallinity and orientation [0002] of the nanowires were confirmed by high-resolution transmission electron microscopy (HR-TEM). Low-temperature photoluminescence spectrum exhibits an intensive UV emission at ∼380 nm and a weak broad green band at ∼530 nm which is detected under an optical excitation of 325 nm wavelength of He-Cd laser. These arrays of ZnO nanowires could have myriad applications in nano-lasers, optoelectronic devices and optical interconnects.

Keywords: HRTEM; PL; UV EMISSION; ZNO

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.1453

Publication date: April 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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