Compositional characterisation of metallurgical grade silicon and porous silicon nanosponge particles

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dc.contributor.authorChadwick, Edward G.
dc.contributor.authorMogili, N. V. V.
dc.contributor.authorO'Dwyer, Colm
dc.contributor.authorMoore, Jimmy D.
dc.contributor.authorFletcher, John S.
dc.contributor.authorLaffir, Fathima
dc.contributor.authorArmstrong, Gordon
dc.contributor.authorTanner, David A.
dc.contributor.funderEnterprise Irelanden
dc.contributor.funderHigher Education Authorityen
dc.contributor.funderVesta Sciences, Inc., United Statesen
dc.date.accessioned2018-05-16T15:53:13Z
dc.date.available2018-05-16T15:53:13Z
dc.date.issued2013-08-02
dc.date.updated2018-05-15T23:21:31Z
dc.description.abstractPorous silicon is generally achieved through electro-chemical etching or chemical etching of bulk silicon in hydrofluoric acid based solutions. The work presented here explores the effect of a chemical etching process on a metallurgical grade silicon powder. It is found that the metallurgical grade silicon particles contain surface bound impurities that induce a porous structure formation upon reaction with the chemical etchant applied. The correlation between the resultant porous structure formed due to the material composition is examined in detail. The elemental composition is determined using a combination of X-ray Photoelectron Spectroscopy and Time of Flight Secondary Ion Mass Spectroscopy. The porous structure is analysed using Transmission Electron Microscopy and Scanning Electron Microscopy. Three samples of the silicon particles analysed for this study include an un-etched bulk silicon powder sample and two samples of chemically etched powder. Pore formation within the particles is found to be dependent on the presence, dispersion, and local concentration of surface bound impurities within the starting powder.en
dc.description.sponsorshipEnterprise Ireland, Vesta Sciences (EI IP 2007 0380 Vesta/UL); Higher Education Authority (PRTLI cycle 4)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationChadwick, E. G., Mogili, N. V. V., O'Dwyer, C., Moore, J. D., Fletcher, J. S., Laffir, F., Armstrong, G. and Tanner, D. A. (2013) 'Compositional characterisation of metallurgical grade silicon and porous silicon nanosponge particles', RSC Advances, 3(42), pp. 19393-19402. doi: 10.1039/C3RA42205Den
dc.identifier.doi10.1039/C3RA42205D
dc.identifier.endpage19402en
dc.identifier.issn2046-2069
dc.identifier.journaltitleRSC Advancesen
dc.identifier.startpage19393en
dc.identifier.urihttps://hdl.handle.net/10468/6134
dc.identifier.volume3en
dc.language.isoenen
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urihttp://pubs.rsc.org/en/content/articlepdf/2013/ra/c3ra42205d
dc.rights© Royal Society of Chemistry 2013en
dc.subjectPorous siliconen
dc.subjectMetallurgical grade porous siliconen
dc.subjectNanospongeen
dc.titleCompositional characterisation of metallurgical grade silicon and porous silicon nanosponge particlesen
dc.typeArticle (peer-reviewed)en
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