Size controlled synthesis of silicon nanocrystals using cationic surfactant templates

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dc.contributor.author Linehan, Keith
dc.contributor.author Doyle, Hugh
dc.date.accessioned 2016-05-06T10:41:42Z
dc.date.available 2016-05-06T10:41:42Z
dc.date.issued 2013-09-11
dc.identifier.citation LINEHAN, K. & DOYLE, H. 2014. Size Controlled Synthesis of Silicon Nanocrystals Using Cationic Surfactant Templates. Small, 10, pp. 584-590. doi: 10.1002/smll.201301189 en
dc.identifier.volume 10 en
dc.identifier.startpage 584 en
dc.identifier.endpage 590 en
dc.identifier.issn 1613-6829
dc.identifier.uri http://hdl.handle.net/10468/2514
dc.identifier.doi 10.1002/smll.201301189
dc.description.abstract Alkyl-terminated silicon nanocrystals (Si NCs) are synthesized at room temperature by hydride reduction of silicon tetrachloride (SiCl4) within inverse micelles. Highly monodisperse Si nanocrystals with average diameters ranging from 2 to 6 nm are produced by variation of the cationic quaternary ammonium salts used to form the inverse micelles. Transmission electron microscopy imaging shows that the NCs are highly crystalline, while FTIR spectra confirm that the NCs are passivated by covalent attachment of alkanes, with minimal surface oxidation. UV-vis absorbance and photoluminescence spectroscopy show significant quantum confinement effects, with moderate absorption in the UV spectral range, and a strong blue emission with a marked dependency on excitation wavelength. The photoluminescence quantum yield (Φ) of the Si NCs exhibits an inverse relationship with the mean NC diameter, with a maximum of 12% recorded for 2 nm NCs. en
dc.description.sponsorship European Commission (FP7 Projects: SNAPSUN, grant agreement no. 246310; CommonSense, grant agreement no. 261809) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher John Wiley & Sons, Inc en
dc.rights © 2013, John Wiley & Sons, Inc. This is the peer reviewed version of the following article: LINEHAN, K. & DOYLE, H. 2014. Size Controlled Synthesis of Silicon Nanocrystals Using Cationic Surfactant Templates. Small, 10, pp. 584-590, which has been published in final form at http://dx.doi.org/10.1002/smll.201301189. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. http://olabout.wiley.com/WileyCDA/Section/id-820227.html#terms en
dc.subject Silicon nanocrystals en
dc.subject Synthesis en
dc.subject Inverse micelle en
dc.subject Photoluminescence en
dc.subject Quantum yield en
dc.title Size controlled synthesis of silicon nanocrystals using cationic surfactant templates en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Hugh Doyle, Micro-Nanoelectronics Centre, Tyndall National Institute, Cork, Ireland. +353-21-490-4310 Email: hugh.doyle@tyndall.ie en
dc.internal.availability Full text available en
dc.date.updated 2016-04-10T17:49:46Z
dc.description.version Accepted Version en
dc.internal.rssid 227590786
dc.contributor.funder European Commission
dc.description.status Peer reviewed en
dc.identifier.journaltitle Small en
dc.internal.copyrightchecked Yes. !!CORA!! AV permitted by publisher after 12 month embargo: "The accepted version may be placed on the author's company/institutional repository or archive. Self-archiving of the accepted version is subject to an embargo period of 12-24 months. The embargo period is 12 months for scientific, technical, and medical (STM) journals and 24 months for social science and humanities (SSH) journals following publication of the final article." http://olabout.wiley.com/WileyCDA/Section/id-828039.html en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress hugh.doyle@tyndall.ie en


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