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dc.contributor.authorYue, Wan
dc.contributor.authorLi, Cheng
dc.contributor.authorTian, Xuelin
dc.contributor.authorLi, Weiwei
dc.contributor.authorNeophytou, Marios
dc.contributor.authorChen, Hu
dc.contributor.authorDu, Weiyuan
dc.contributor.authorJellett, Cameron
dc.contributor.authorChen, Hung-Yang
dc.contributor.authorOnwubiko, Ada
dc.contributor.authorMcCulloch, Iain
dc.date.accessioned2017-07-03T08:05:53Z
dc.date.available2017-07-03T08:05:53Z
dc.date.issued2017-06-10
dc.identifier.citationYue W, Li C, Tian X, Li W, Neophytou M, et al. (2017) Diazaisoindigo bithiophene and terthiophene copolymers for application in field-effect transistors and solar cells. Journal of Polymer Science Part A: Polymer Chemistry. Available: http://dx.doi.org/10.1002/pola.28676.
dc.identifier.issn0887-624X
dc.identifier.doi10.1002/pola.28676
dc.identifier.urihttp://hdl.handle.net/10754/625139
dc.description.abstractTwo donor–acceptor conjugated polymers with azaisoindigo as acceptor units and bithiophene and terthiophene as donor units have been synthesized by Stille polymerization. These two polymers have been successfully applied in field-effect transistors and polymer solar cells. By changing the donor component of the conjugated polymer backbone from bithiophene to terthiophene, the density of thiophene in the backbone is increased, manifesting as a decrease in both ionization potential and in electron affinity. Therefore, the charge transport in field-effect transistors switches from ambipolar to predominantly hole transport behavior. PAIIDTT exhibits hole mobility up to 0.40 cm2/Vs and electron mobility of 0.02 cm2/Vs, whereas PAIIDTTT exhibits hole mobility of 0.62 cm2/Vs. Polymer solar cells were fabricated based on these two polymers as donors with PC61BM and PC71BM as acceptor where PAIIDTT shows a modest efficiency of 2.57% with a very low energy loss of 0.55 eV, while PAIIDTTT shows a higher efficiency of 6.16% with a higher energy loss of 0.74 eV. Our results suggest that azaisoindgo is a useful building block for the development of efficient polymer solar cells with further improvement possibility by tuning the alternative units on the polymer backbone. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017
dc.description.sponsorshipThis work was supported by Marie Curie Intra-European Fellowship with the 7th European Community Framework Programme (FP7-PEOPLE-2013-IEF-622187). The authors thank EC FP7 Project SC2, EC FP7 Project ArtESun, EC FP7 Project PolyMed, EPSRC Project EP/M00514311 and EPSRC Project EP/G037515/1 for financial support.
dc.publisherWiley-Blackwell
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/pola.28676/full
dc.rightsThis is the peer reviewed version of the following article: Diazaisoindigo bithiophene and terthiophene copolymers for application in field-effect transistors and solar cells, which has been published in final form at http://doi.org/10.1002/pola.28676. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.subjectazaisoindigo
dc.subjectconjugated polymers
dc.subjectenergy loss
dc.subjectfunctionalization of polymers
dc.subjecthigh performance polymers
dc.subjectthin-film transistor
dc.subjectsolar cells
dc.titleDiazaisoindigo bithiophene and terthiophene copolymers for application in field-effect transistors and solar cells
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKing Abdullah University of Science and Technology (KAUST), KSC; Thuwal 23955-6900 Saudi Arabia
dc.identifier.journalJournal of Polymer Science Part A: Polymer Chemistry
dc.eprint.versionPost-print
dc.contributor.institutionKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Materials Science and Engineering; Sun Yat-sen University; Guangzhou 510275 China
dc.contributor.institutionDepartment of Chemistry and Centre for Plastic Electronics; Imperial College London; London SW7 2AZ United Kingdom
dc.contributor.institutionBeijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
dc.contributor.institutionChen, Hung-Yang
kaust.personNeophytou, Marios
kaust.personChen, Hu
kaust.personDu, Weiyuan
kaust.personMcCulloch, Iain
refterms.dateFOA2018-06-10T00:00:00Z


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