DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Young Keun | ko |
dc.contributor.author | Choi, Hongkyw | ko |
dc.contributor.author | Lee, Hyunsoo | ko |
dc.contributor.author | Lee, Changhwan | ko |
dc.contributor.author | Choi, Jin Sik | ko |
dc.contributor.author | Choi, Choon-Gi | ko |
dc.contributor.author | Hwang, Euyheon | ko |
dc.contributor.author | Park, Jeong Young | ko |
dc.date.accessioned | 2016-07-07T07:00:26Z | - |
dc.date.available | 2016-07-07T07:00:26Z | - |
dc.date.created | 2016-07-04 | - |
dc.date.created | 2016-07-04 | - |
dc.date.issued | 2016-06 | - |
dc.identifier.citation | SCIENTIFIC REPORTS, v.6 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/10203/210177 | - |
dc.description.abstract | Carrier multiplication (i.e. generation of multiple electron-hole pairs from a single high-energy electron, CM) in graphene has been extensively studied both theoretically and experimentally, but direct application of hot carrier multiplication in graphene has not been reported. Here, taking advantage of efficient CM in graphene, we fabricated graphene/TiO2 Schottky nanodiodes and found CM-driven enhancement of quantum efficiency. The unusual photocurrent behavior was observed and directly compared with Fowler's law for photoemission on metals. The Fowler's law exponent for the graphene-based nanodiode is almost twice that of a thin gold film based diode; the graphene-based nanodiode also has a weak dependence on light intensity-both are significant evidence for CM in graphene. Furthermore, doping in graphene significantly modifies the quantum efficiency by changing the Schottky barrier. The CM phenomenon observed on the graphene/TiO2 nanodiodes can lead to intriguing applications of viable graphene-based light harvesting | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.subject | TANDEM SOLAR-CELL | - |
dc.subject | ELECTRON FLOW | - |
dc.subject | INTERNAL PHOTOEMISSION | - |
dc.subject | LAYER GRAPHENE | - |
dc.subject | DIRAC POINT | - |
dc.subject | INTERFACE | - |
dc.subject | ENERGY | - |
dc.subject | EFFICIENCY | - |
dc.subject | SCATTERING | - |
dc.subject | CONVERSION | - |
dc.title | Hot carrier multiplication on graphene/TiO2 Schottky nanodiodes | - |
dc.type | Article | - |
dc.identifier.wosid | 000377478100002 | - |
dc.identifier.scopusid | 2-s2.0-84976514177 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.publicationname | SCIENTIFIC REPORTS | - |
dc.identifier.doi | 10.1038/srep27549 | - |
dc.contributor.localauthor | Park, Jeong Young | - |
dc.contributor.nonIdAuthor | Choi, Hongkyw | - |
dc.contributor.nonIdAuthor | Choi, Jin Sik | - |
dc.contributor.nonIdAuthor | Choi, Choon-Gi | - |
dc.contributor.nonIdAuthor | Hwang, Euyheon | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | TANDEM SOLAR-CELL | - |
dc.subject.keywordPlus | ELECTRON FLOW | - |
dc.subject.keywordPlus | INTERNAL PHOTOEMISSION | - |
dc.subject.keywordPlus | LAYER GRAPHENE | - |
dc.subject.keywordPlus | DIRAC POINT | - |
dc.subject.keywordPlus | INTERFACE | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | SCATTERING | - |
dc.subject.keywordPlus | CONVERSION | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.