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Microstructural characterisation of metallurgical grade porous silicon nanosponge particles

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Show simple item record Chadwick, Edward G. Belochapkine, Serguei Tanner, David A. 2014-03-04T09:46:28Z 2014-03-04T09:46:28Z 2012
dc.identifier.citation Chadwick, EG,Beloshapkin, S,Tanner, DA (2012) 'Microstructural characterisation of metallurgical grade porous silicon nanosponge particles'. Journal Of Materials Science, 47 :2396-2404. en_US
dc.description peer-reviewed en_US
dc.description.abstract Porous silicon finds numerous applications in the areas of bio-technology, drug delivery, energetic materials and catalysis. Recent studies by Vesta Sciences have led to the development of porous silicon nanosponge particles from metallurgical grade silicon powder through their own patented chemical etching process (Irish patent no. IE20060360). This discovery paves the way for a more economical production method for porous silicon. The study presented here studies the structural morphology of the porous silicon nanosponge particles using high resolution electron microscopy techniques combined with porisometry type measurements, where appropriate. The related surface pore structure is examined in detail using Scanning Electron Microscopy and Transmission Electron Microscopy techniques while the internal pore structure is explored using Focused Ion Beam milling and ultramicrotomed cross-sections. Three samples of the silicon particles were analysed for this study which include the starting metallurgical grade silicon powder and two samples that have been chemically etched. Analysis of the etched samples indicates a disordered pore structure with pore diameters ranging up to 15 nm on porous silicon particles ranging up to 5 mu m in size. Crystallographic orientation did not appear to affect the surface pore opening diameter. Internal pore data indicated pore depths of up to 1 mu m dependant on the particle size and etching conditions applied. en_US
dc.language.iso eng en_US
dc.publisher Springer en_US
dc.relation.ispartofseries Journal of Materials Science;47, pp. 2396-2404
dc.rights The original publication is available at en_US
dc.subject photoluminescence en_US
dc.subject layers en_US
dc.title Microstructural characterisation of metallurgical grade porous silicon nanosponge particles en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2013-11-29T16:46:58Z
dc.description.version accepted
dc.contributor.sponsor EI en_US
dc.relation.projectid EIIP2007 0380 VESTA/UL en_US
dc.relation.projectid PRTLI cycle(4) en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1387497
dc.internal.copyrightchecked Yes
dc.description.status peer-reviewed

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