Time dependence of charge transfer processes in diamond studied with positrons

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMäki, J.-M.
dc.contributor.authorTuomisto, F.
dc.contributor.authorVarpula, Matti
dc.contributor.authorFisher, D.
dc.contributor.authorKhan, R.U.A.
dc.contributor.authorMartineau, P.M.
dc.contributor.departmentDepartment of Applied Physics
dc.contributor.departmentDepartment of Micro and Nanosciences
dc.date.accessioned2018-05-22T14:42:51Z
dc.date.available2018-05-22T14:42:51Z
dc.date.issued2011-11
dc.description.abstractWe have developed a method called optical transient positron spectroscopy and apply it to study the optically induced carrier trapping and charge transfer processes in natural brown type IIa diamond. By measuring the positron lifetime with continuous and pulsed illumination, we present an estimate of the optical absorption cross section of the vacancy clusters causing the brown color. The vacancy clusters accept electrons from the valence band in the absorption process, giving rise to photoconductivity.en
dc.description.versionPeer revieweden
dc.format.extent5
dc.format.extent1-5
dc.format.mimetypeapplication/pdf
dc.identifier.citationMäki , J-M , Tuomisto , F , Varpula , M , Fisher , D , Khan , R U A & Martineau , P M 2011 , ' Time dependence of charge transfer processes in diamond studied with positrons ' , Physical Review Letters , vol. 107 , no. 21 , 217403 , pp. 1-5 . https://doi.org/10.1103/PhysRevLett.107.217403en
dc.identifier.doi10.1103/PhysRevLett.107.217403
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.otherPURE UUID: 959e1891-4478-405f-93e2-3b2c6feca602
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/959e1891-4478-405f-93e2-3b2c6feca602
dc.identifier.otherPURE LINK: http://link.aps.org/doi/10.1103/PhysRevLett.107.217403
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/13500189/PhysRevLett.107.217403.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/31051
dc.identifier.urnURN:NBN:fi:aalto-201805222491
dc.language.isoenen
dc.relation.ispartofseriesPHYSICAL REVIEW LETTERSen
dc.relation.ispartofseriesVolume 107, issue 21en
dc.rightsopenAccessen
dc.subject.keyworddiamond
dc.subject.keywordoptical
dc.subject.keywordpositron
dc.subject.keywordtransient
dc.titleTime dependence of charge transfer processes in diamond studied with positronsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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