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DC Field | Value | Language |
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dc.citation.endPage | 639 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 629 | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 23 | - |
dc.contributor.author | Yu, Hojeong | - |
dc.contributor.author | Bao, Zhenan | - |
dc.contributor.author | Oh, Joon Hak | - |
dc.date.accessioned | 2023-12-22T04:13:27Z | - |
dc.date.available | 2023-12-22T04:13:27Z | - |
dc.date.created | 2013-06-19 | - |
dc.date.issued | 2013-02 | - |
dc.description.abstract | The photoelectronic characteristics of single-crystalline nanowire organic phototransistors (NW-OPTs) are studied using a high-performance n-channel organic semiconductor, N,N-bis(2-phenylethyl)-perylene-3,4:9,10-tetracarboxylic diimide (BPE-PTCDI), as the photoactive layer. The optoelectronic performances of the NW-OPTs are analyzed by way of their currentvoltage (IV) characteristics on irradiation at different wavelengths, and comparison with corresponding thin-film organic phototransistors (OPTs). Significant enhancement in the charge-carrier mobility of NW-OPTs is observed upon light irradiation as compared with when performed in the dark. A mobility enhancement is observed when the incident optical power density increases and the wavelength of the light source matches the light-absorption range of the photoactive material. The photoswitching ratio is strongly dependent upon the incident optical power density, whereas the photoresponsivity is more dependent on matching the light-source wavelength with the maximum absorption range of the photoactive material. BPE-PTCDI NW-OPTs exhibit much higher external quantum efficiency (EQE) values (approximate to 7900 times larger) than thin-film OPTs, with a maximum EQE of 263 000%. This is attributed to the intrinsically defect-free single-crystalline nature of the BPE-PTCDI NWs. In addition, an approach is devised to analyze the charge-transport behaviors using charge accumulation/release rates from deep traps under on/off switching of external light sources. | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.23, no.5, pp.629 - 639 | - |
dc.identifier.doi | 10.1002/adfm.201201848 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.scopusid | 2-s2.0-84873402384 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/3487 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84873402384 | - |
dc.identifier.wosid | 000314468600012 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | High-Performance Phototransistors Based on Single-Crystalline n-Channel Organic Nanowires and Photogenerated Charge-Carrier Behaviors | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | organic phototransistors | - |
dc.subject.keywordAuthor | nanowires | - |
dc.subject.keywordAuthor | thin-films | - |
dc.subject.keywordAuthor | organic single-crystals | - |
dc.subject.keywordAuthor | charge accumulation rates | - |
dc.subject.keywordAuthor | charge release rates | - |
dc.subject.keywordPlus | FIELD-EFFECT TRANSISTORS | - |
dc.subject.keywordPlus | PHOTOCURRENT MULTIPLICATION | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | FILM | - |
dc.subject.keywordPlus | PHOTOMULTIPLICATION | - |
dc.subject.keywordPlus | SEMICONDUCTOR | - |
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