Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 김봉수 | - |
dc.date.accessioned | 2016-08-27T04:08:36Z | - |
dc.date.available | 2016-08-27T04:08:36Z | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 1566-1199 | - |
dc.identifier.issn | 1878-5530 | - |
dc.identifier.other | OAK-16089 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/217868 | - |
dc.description.abstract | We report high-performance organic thin-film transistors (OTFTs) with an ultrathin active layer of difluorobenzothiadiazole-dithienosilole copolymer (PDFDT) form by using the wire bar-coating process. The top-gate/bottom contact (TG/BC) OTFTs based on bar-coated PDFDT polymer as channel material and poly(methyl methacrylate) (PMMA) as gate dielectric show a hole mobility of up to 2.2 cm(2) V-1 s(-1) with a current ON/OFF ratio (I-on/I-off) of 10(4)-10(5), with the mobility being two times larger than that of the spincoated PDFDT based OTFTs. The higher mobility of the bar-coated PDFDT polymer films can be attributed to the well-organized fibril structures of the polymer chains. Importantly, two different molecular weight polymers (M-n = 23 and 34 kDa) were employed to conduct these experiments and both batches showed about the same performance, which mitigates the typical batch-to-batch variation in OTFT performance. Furthermore, we explored the operational stability of the bar-coated OTFTs in ambient air and nitrogen environments. The bias-stress and cycling tests between the ON/OFF states of the bar-coated devices showed high stability in both nitrogen and air. Conclusively, here we demonstrate that (i) a simple barcoating process is a better method to control and obtain good polymer morphology in comparison to spin-coating, and (ii) the PDFDT polymer has great potential to provide good reproducibility and stability in large-area OTFT devices. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | Organic thin-film transistors | - |
dc.subject | Bar-coating | - |
dc.subject | Conjugated polymers | - |
dc.subject | Benzothiadiazole | - |
dc.subject | Molecular weight | - |
dc.subject | Solution process | - |
dc.title | Bar-coated high-performance organic thin-film transistors based on ultrathin PDFDT polymer with molecular weight independence | - |
dc.type | Article | - |
dc.relation.volume | 29 | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 88 | - |
dc.relation.lastpage | 93 | - |
dc.relation.journaltitle | ORGANIC ELECTRONICS | - |
dc.identifier.doi | 10.1016/j.orgel.2015.11.033 | - |
dc.identifier.wosid | WOS:000368220100014 | - |
dc.identifier.scopusid | 2-s2.0-84949883425 | - |
dc.author.google | Nketia-Yawson, Benjamin | - |
dc.author.google | Lee, Hyo-Sang | - |
dc.author.google | Son, Hae Jung | - |
dc.author.google | Kim, BongSoo | - |
dc.author.google | Noh, Yong-Young | - |
dc.contributor.scopusid | 김봉수(55588476300) | - |
dc.date.modifydate | 20180827081001 | - |