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Characteristics of silicon nanocrystals for photovoltaic applications

Moore, D.; Krishnamurthy, S.; Chao, Y.; Wang, Q.; Brabazon, D. and McNally, P. J. (2011). Characteristics of silicon nanocrystals for photovoltaic applications. Physica Status Solidi (A) Applications and Materials Science, 208(3) pp. 604–607.

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Over the last decade the progress in amorphous and nanocrystalline silicon (nc-Si) for photovoltaic applications received significant interest in science and technology. Advances in the understanding of these novel materials and their properties are growing rapidly. In order to realise nc-Si in the solar cell, a thicker intrinsic layer is required. Due to the indirect band gap in the crystallites, the absorption coefficients of nc-Si are much lower. In this work we have used electrochemical etching techniques to produce silicon nanocrystals of the sizes 3-5 nm. Viable drop cast deposition of Si nanocrystals to increase the thickness without compromising the material properties was investigated by atomic force microscopy, optical microscopy, photoemission spectroscopy and optical absorption methods.

Item Type: Journal Item
Copyright Holders: 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN: 1862-6319
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetIrish Research Council for Science, Engineering and Technology
Not SetNot SetHigher Education Authority Program for Research in Third Level Institutions (2007–2011)
Keywords: absorption coefficients; amorphous and nanocrystalline silicon; drop-cast; electrochemical etching techniques; indirect band gap; intrinsic layer; material property; nanocrystalline; novel materials; optical absorption; photoemission spectroscopy; photovoltaic applications; photovoltaics; quantum dots; science and technology; Si nanocrystal; silicon nanocrystals, absorption; absorption spectroscopy; atomic force microscopy; atomic spectroscopy; emission spectroscopy; light absorption; materials properties; nanocrystalline silicon; nanocrystals; optical microscopy; optical waveguides; photovoltaic effects; semiconductor quantum dots; amorphous silicon
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 35406
Depositing User: Satheesh Krishnamurthy
Date Deposited: 16 Nov 2012 13:56
Last Modified: 07 Dec 2018 10:10
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