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A Simple Route to Growth of Silicon Nanowires

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Abstract:

Silicon nanowires (SiNWs) have been produced by a simple thermal heating method with gold as a catalyst. The grown silicon nanowires were highly crystalline with little impurities such as amorphous Si and silicon oxides. Photoluminescence (PL) study has indicated that the Si band gap increases from 1.1 eV of bulk Si to 1.59 eV for the as-grown SiNWs due to quantum confinement effect. A strong PL peak around 540 nm (2.28 eV) is attributed to the relaxation of photon-induced self-trapped state in the form of surface Si–Si dimmers, while the blue light emission around 390 nm is attributed to the silicon oxide impurity on the SiNWs surface.

Keywords: PHOTOLUMINESCENCE; SILICON NANOWIRE; THERMAL HEATING

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.217

Publication date: November 1, 2008

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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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