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dc.contributor.authorHirori, Hen
dc.contributor.authorShinokita, Ken
dc.contributor.authorShirai, Men
dc.contributor.authorTani, Sen
dc.contributor.authorKadoya, Yen
dc.contributor.authorTanaka, Ken
dc.contributor.alternative廣理, 英基ja
dc.date.accessioned2012-07-06T05:46:53Z-
dc.date.available2012-07-06T05:46:53Z-
dc.date.issued2011-12-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/2433/157960-
dc.description.abstractThe study of carrier multiplication has become an essential part of many-body physics and materials science as this multiplication directly affects nonlinear transport phenomena, and has a key role in designing efficient solar cells and electroluminescent emitters and highly sensitive photon detectors. Here we show that a 1-MVcm(-1) electric field of a terahertz pulse, unlike a DC bias, can generate a substantial number of electron-hole pairs, forming excitons that emit near-infrared luminescence. The bright luminescence associated with carrier multiplication suggests that carriers coherently driven by a strong electric field can efficiently gain enough kinetic energy to induce a series of impact ionizations that can increase the number of carriers by about three orders of magnitude on the picosecond time scale.en
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherNature Publishing Groupen
dc.rights© 2011 Nature Publishing Group, a division of Macmillan Publishers Limited.en
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/en
dc.subjectPhysical sciencesen
dc.subjectApplied physicsen
dc.subjectMaterials scienceen
dc.subjectNanotechnologyen
dc.subject.meshElectricityen
dc.subject.meshElectronics/instrumentationen
dc.subject.meshElectronics/methodsen
dc.subject.meshElectronsen
dc.subject.meshInfrared Raysen
dc.subject.meshLuminescenceen
dc.subject.meshOptical Devicesen
dc.subject.meshPhotonsen
dc.subject.meshTerahertz Radiationen
dc.subject.meshThermodynamicsen
dc.titleExtraordinary carrier multiplication gated by a picosecond electric field pulse.en
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.jtitleNature communicationsen
dc.identifier.volume2-
dc.relation.doi10.1038/ncomms1598-
dc.textversionpublisher-
dc.identifier.artnum594-
dc.identifier.pmid22186890-
dcterms.accessRightsopen access-
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