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DC Field | Value | Language |
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dc.citation.endPage | 247 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 241 | - |
dc.citation.title | ADVANCED OPTICAL MATERIALS | - |
dc.citation.volume | 3 | - |
dc.contributor.author | Yu, Hojeong | - |
dc.contributor.author | Joo, Piljae | - |
dc.contributor.author | Lee, Dajeong | - |
dc.contributor.author | Kim, Byeong-Su | - |
dc.contributor.author | Oh, Joon Hak | - |
dc.date.accessioned | 2023-12-22T01:40:03Z | - |
dc.date.available | 2023-12-22T01:40:03Z | - |
dc.date.created | 2015-03-20 | - |
dc.date.issued | 2015-02 | - |
dc.description.abstract | The tailored fabrication of multicomponent nanostructures that can exhibit superior or unique optoelectronic properties compared with those of the single-component system is highly desirable for fundamental studies of charge transport mechanisms and novel applications with advanced functions. To achieve efficient charge transport and high photoresponsivity, core/shell p-n heterojunction nanowires (NWs) are fabricated using N,N′-bis(2-phenylethyl)-perylene-3,4:9,10-tetracarboxylic diimide (BPE-PTCDI) and reduced graphene oxide (rGO) in solution phase. BPE-PTCDI/rGO core/shell NWs exhibit significantly enhanced photocurrent and faster charge compensation rate under irradiation, compared with pure BPE-PTCDI NWs. BPE-PTCDI NW core mainly acts as a light absorption layer, whereas rGO shell functions as a charge transport channel and contributes to a large electrical conductivity. Accordingly, the outstanding light-detecting performance of BPE-PTCDI/rGO NWs results from the synergistic combination of the favorable optical and electrical properties of each of the constituent materials. Intriguingly, BPE-PTCDI/rGO NW organic phototransistors (OPTs) show charge compensation behaviors opposite to those of pure BPE-PTCDI NW-OPTs, which is interpreted with a model concerning charge trapping energy levels. The results obtained herein demonstrate great promise for use of carbon-based multicomponent core/shell nanomaterials in photodetectors, and the developed methodology provides insights into the quantitative analysis of the photogenerated charge-carrier dynamics of multicomponent semiconducting systems. Multicomponent phototransistors prepared using perylene diimide/reduced graphene oxide core/shell p-n heterojunction nanowires exhibit ambipolar charge transport, high photoresponsivity, and photocurrent multiplication, due to the synergistic interplay of the core and shell materials. The photoinduced charge-carrier dynamics are investigated by analyzing charge compensation rates and external quantum efficiencies, which are superior to those of the single-component system | - |
dc.identifier.bibliographicCitation | ADVANCED OPTICAL MATERIALS, v.3, no.2, pp.241 - 247 | - |
dc.identifier.doi | 10.1002/adom.201400346 | - |
dc.identifier.issn | 2195-1071 | - |
dc.identifier.scopusid | 2-s2.0-84923171506 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/10944 | - |
dc.identifier.url | http://onlinelibrary.wiley.com/doi/10.1002/adom.201400346/full | - |
dc.identifier.wosid | 000349961400013 | - |
dc.language | 영어 | - |
dc.publisher | John Wiley and Sons Inc. | - |
dc.title | Photoinduced charge-carrier dynamics of phototransistors based on perylene diimide/reduced graphene oxide core/shell p-n junction nanowires | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary; Optics | - |
dc.relation.journalResearchArea | Materials Science; Optics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Charge-carrier dynamics | - |
dc.subject.keywordAuthor | Core/shell nanowires | - |
dc.subject.keywordAuthor | Nanowires, perylene diimides | - |
dc.subject.keywordAuthor | Phototransistors | - |
dc.subject.keywordAuthor | Reduced graphene oxide | - |
dc.subject.keywordPlus | FIELD-EFFECT TRANSISTORS | - |
dc.subject.keywordPlus | PHOTOCONDUCTIVITY | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | PHOTODETECTORS | - |
dc.subject.keywordPlus | NANORIBBONS | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | SHEETS | - |
dc.subject.keywordPlus | GAN | - |
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