Time Dependence of Charge Transfer Processes in Diamond Studied with Positrons

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMäki, J.-M.
dc.contributor.authorTuomisto, Filip
dc.contributor.authorVarpula, A.
dc.contributor.authorFisher, D.
dc.contributor.authorKhan, R. U. A.
dc.contributor.authorMartineau, P. M.
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-09-02T09:02:59Z
dc.date.available2015-09-02T09:02:59Z
dc.date.issued2011
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.extent217403/1-5
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMäki, J.-M. & Tuomisto, Filip & Varpula, A. & Fisher, D. & Khan, R. U. A. & Martineau, P. M. 2011. Time Dependence of Charge Transfer Processes in Diamond Studied with Positrons. Physical Review Letters. Volume 107, Issue 21. 217403/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.107.217403en
dc.identifier.doi10.1103/physrevlett.107.217403
dc.identifier.issn0031-9007 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/17573
dc.identifier.urnURN:NBN:fi:aalto-201509024191
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Lettersen
dc.relation.ispartofseriesVolume 107, Issue 21
dc.rights© 2011 American Physical Society (APS). This is the accepted version of the following article: Mäki, J.-M. & Tuomisto, Filip & Varpula, A. & Fisher, D. & Khan, R. U. A. & Martineau, P. M. 2011. Time Dependence of Charge Transfer Processes in Diamond Studied with Positrons. Physical Review Letters. Volume 107, Issue 21. 217403/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.107.217403, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.107.217403.en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keyworddiamonden
dc.subject.keywordpositronen
dc.subject.keywordopticalen
dc.subject.keywordtransienten
dc.subject.otherPhysicsen
dc.titleTime Dependence of Charge Transfer Processes in Diamond Studied with Positronsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen
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