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dc.contributor.authorLiu, Qian
dc.contributor.authorWang, Yang
dc.contributor.authorKohara, Akihiro
dc.contributor.authorMatsumoto, Hidetoshi
dc.contributor.authorManzhos, Sergei
dc.contributor.authorFeron, Krishna
dc.contributor.authorBottle, Steven E
dc.contributor.authorBell, John
dc.contributor.authorMichinobu, Tsuyoshi
dc.contributor.authorSonar, Prashant
dc.date.accessioned2020-04-30T04:17:43Z
dc.date.available2020-04-30T04:17:43Z
dc.date.issued2019
dc.identifier.issn1616-301X
dc.identifier.doi10.1002/adfm.201907452
dc.identifier.urihttp://hdl.handle.net/10072/393241
dc.description.abstractFine‐tuning of the charge carrier polarity in organic transistors is an important step toward high‐performance organic complementary circuits and related devices. Here, three new semiconducting polymers, namely, pDPF‐DTF2, pDPSe‐DTF2, and pDPPy‐DTF2, are designed and synthesized using furan, selenophene, and pyridine flanking group‐based diketopyrrolopyrrole cores, respectively. Upon evaluating their electrical properties in transistor devices, the best performance has been achieved for pDPSe‐DTF2 with the highest and average hole mobility of 1.51 and 1.22 cm2 V−1 s−1, respectively. Most intriguingly, a clear charge‐carrier‐polarity change is observed when the devices are measured under vacuum. The pDPF‐DTF2 polymer exhibits a balanced ambipolar performance with the µh/µe ratio of 1.9, whereas pDPSe‐DTF2 exhibits p‐type dominated charge carrier transport properties with the µh/µe ratio of 26.7. Such a charge carrier transport change is due to the strong electron‐donating nature of the selenophene. Furthermore, pDPPy‐DTF2 with electron‐withdrawing pyridine flanking units demonstrates unipolar n‐type charge transport properties with an electron mobility as high as 0.20 cm2 V−1 s−1. Overall, this study demonstrates a simple yet effective approach to switch the charge carrier polarity in transistors by varying the electron affinity of flanking groups of the diketopyrrolopyrrole unit.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofissue7
dc.relation.ispartofjournalAdvanced Functional Materials
dc.relation.ispartofvolume30
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.subject.fieldofresearchcode09
dc.subject.keywordsScience & Technology
dc.subject.keywordsTechnology
dc.subject.keywordsChemistry, Multidisciplinary
dc.subject.keywordsChemistry, Physical
dc.titleTuning the Charge Carrier Polarity of Organic Transistors by Varying the Electron Affinity of the Flanked Units in Diketopyrrolopyrrole-Based Copolymers
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLiu, Q; Wang, Y; Kohara, A; Matsumoto, H; Manzhos, S; Feron, K; Bottle, SE; Bell, J; Michinobu, T; Sonar, P, Tuning the Charge Carrier Polarity of Organic Transistors by Varying the Electron Affinity of the Flanked Units in Diketopyrrolopyrrole-Based Copolymers, Advanced Functional Materials, 2019, 30 (7)
dc.date.updated2020-04-20T02:10:01Z
gro.hasfulltextNo Full Text
gro.griffith.authorSonar, Prashant


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