DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoo, Seung-Hwa | ko |
dc.contributor.author | Kum, Jong-Min | ko |
dc.contributor.author | Cho, Sung-Oh | ko |
dc.date.accessioned | 2013-03-09T08:47:11Z | - |
dc.date.available | 2013-03-09T08:47:11Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011-10 | - |
dc.identifier.citation | NANOSCALE RESEARCH LETTERS, v.6 | - |
dc.identifier.issn | 1931-7573 | - |
dc.identifier.uri | http://hdl.handle.net/10203/95908 | - |
dc.description.abstract | Tuning the electronic band structures such as band-edge position and bandgap of organic semiconductors is crucial to maximize the performance of organic photovoltaic devices. We present a simple yet effective electron irradiation approach to tune the band structure of [6, 6]-phenyl-C61-butyric acid methyl ester (PCBM) that is the most widely used organic acceptor material. We have found that the lowest unoccupied molecular orbital (LUMO) level of PCBM up-shifts toward the vacuum energy level, while the highest occupied molecular orbital (HOMO) level down-shifts when PCBM is electron-irradiated. The shift of the HOMO and the LUMO levels increases as the irradiated electron fluence increases. Accordingly, the band-edge position and the bandgap of PCBM can be controlled by adjusting the electron fluence. Characterization of electron-irradiated PCBM reveals that the variation of the band structure is attributed to the molecular structural change of PCBM by electron irradiation. | - |
dc.language | English | - |
dc.publisher | SPRINGER | - |
dc.subject | POLYMER SOLAR-CELLS | - |
dc.subject | BEAM-INDUCED FRAGMENTATION | - |
dc.subject | FIELD-EFFECT TRANSISTORS | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | OPEN-CIRCUIT VOLTAGE | - |
dc.subject | RADIATION CHEMISTRY | - |
dc.subject | OPTICAL-PROPERTIES | - |
dc.subject | C-60 FULLERENE | - |
dc.subject | LUMO LEVEL | - |
dc.subject | FILMS | - |
dc.title | Tuning the electronic band structure of PCBM by electron irradiation | - |
dc.type | Article | - |
dc.identifier.wosid | 000296647300006 | - |
dc.identifier.scopusid | 2-s2.0-84856056161 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.publicationname | NANOSCALE RESEARCH LETTERS | - |
dc.contributor.localauthor | Cho, Sung-Oh | - |
dc.contributor.nonIdAuthor | Kum, Jong-Min | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | tunable band structure | - |
dc.subject.keywordAuthor | HOMO | - |
dc.subject.keywordAuthor | LUMO | - |
dc.subject.keywordAuthor | organic semiconductor | - |
dc.subject.keywordAuthor | PCBM | - |
dc.subject.keywordAuthor | electron irradiation | - |
dc.subject.keywordPlus | POLYMER SOLAR-CELLS | - |
dc.subject.keywordPlus | BEAM-INDUCED FRAGMENTATION | - |
dc.subject.keywordPlus | FIELD-EFFECT TRANSISTORS | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | OPEN-CIRCUIT VOLTAGE | - |
dc.subject.keywordPlus | RADIATION CHEMISTRY | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | C-60 FULLERENE | - |
dc.subject.keywordPlus | LUMO LEVEL | - |
dc.subject.keywordPlus | FILMS | - |
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