Carrier Transport Enhancement in Conjugated Polymers through Interfacial Self-Assembly of Solution-State Aggregates

Handle URI:
http://hdl.handle.net/10754/617235
Title:
Carrier Transport Enhancement in Conjugated Polymers through Interfacial Self-Assembly of Solution-State Aggregates
Authors:
Zhao, Kui ( 0000-0001-9348-7943 ) ; Khan, Hadayat Ullah; Li, Ruipeng; Hu, Hanlin; Amassian, Aram ( 0000-0002-5734-1194 )
Abstract:
We demonstrate that local and long range orders of poly(3-hexylthiophene) (P3HT) semicrystalline films can be synergistically improved by combining chemical functionalization of the dielectric surface with solution-state disentanglement and pre-aggregation of P3HT in a theta solvent, leading to a very significant enhancement of the field effect carrier mobility. The pre-aggregation and surface functionalization effects combine to enhance the carrier mobility nearly 100-fold as compared with standard film preparation by spin-coating, and nearly 10-fold increase over the benefits of pre-aggregation alone. In situ quartz crystal microbalance with dissipation (QCM-D) experiments reveal enhanced deposition of pre-aggregates on surfaces modified with an alkyl-terminated self-assembled monolayer (SAM) in comparison to un-aggregated polymer chains. Additional investigations reveal the combined pre-aggregation and surface functionalization significantly enhances local order of the conjugated polymer through planarization and extension of the conjugated backbone of the polymer which clearly translate to significant improvements of carrier transport at the semiconductor-dielectric interface in organic thin film transistors. This study points to opportunities in combining complementary routes, such as well-known pre-aggregation with substrate chemical functionalization, to enhance the polymer self-assembly and improve its interfacial order with benefits for transport properties.
KAUST Department:
Solar and Photovoltaic Engineering Research Center (SPERC); Physical Sciences and Engineering (PSE) Division
Citation:
Carrier Transport Enhancement in Conjugated Polymers through Interfacial Self-Assembly of Solution-State Aggregates 2016 ACS Applied Materials & Interfaces
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
13-Jul-2016
DOI:
10.1021/acsami.6b04508
Type:
Article
ISSN:
1944-8244; 1944-8252
Sponsors:
Part of this work was supported by the King Abdullah University of Science and Technology (KAUST). CHESS is supported by NSF & NIH/NIGMS via NSF award DMR-1332208. AA is grateful to SABIC for the Career Development SABIC Chair.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acsami.6b04508
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorZhao, Kuien
dc.contributor.authorKhan, Hadayat Ullahen
dc.contributor.authorLi, Ruipengen
dc.contributor.authorHu, Hanlinen
dc.contributor.authorAmassian, Aramen
dc.date.accessioned2016-07-19T09:55:09Z-
dc.date.available2016-07-19T09:55:09Z-
dc.date.issued2016-07-13-
dc.identifier.citationCarrier Transport Enhancement in Conjugated Polymers through Interfacial Self-Assembly of Solution-State Aggregates 2016 ACS Applied Materials & Interfacesen
dc.identifier.issn1944-8244-
dc.identifier.issn1944-8252-
dc.identifier.doi10.1021/acsami.6b04508-
dc.identifier.urihttp://hdl.handle.net/10754/617235-
dc.description.abstractWe demonstrate that local and long range orders of poly(3-hexylthiophene) (P3HT) semicrystalline films can be synergistically improved by combining chemical functionalization of the dielectric surface with solution-state disentanglement and pre-aggregation of P3HT in a theta solvent, leading to a very significant enhancement of the field effect carrier mobility. The pre-aggregation and surface functionalization effects combine to enhance the carrier mobility nearly 100-fold as compared with standard film preparation by spin-coating, and nearly 10-fold increase over the benefits of pre-aggregation alone. In situ quartz crystal microbalance with dissipation (QCM-D) experiments reveal enhanced deposition of pre-aggregates on surfaces modified with an alkyl-terminated self-assembled monolayer (SAM) in comparison to un-aggregated polymer chains. Additional investigations reveal the combined pre-aggregation and surface functionalization significantly enhances local order of the conjugated polymer through planarization and extension of the conjugated backbone of the polymer which clearly translate to significant improvements of carrier transport at the semiconductor-dielectric interface in organic thin film transistors. This study points to opportunities in combining complementary routes, such as well-known pre-aggregation with substrate chemical functionalization, to enhance the polymer self-assembly and improve its interfacial order with benefits for transport properties.en
dc.description.sponsorshipPart of this work was supported by the King Abdullah University of Science and Technology (KAUST). CHESS is supported by NSF & NIH/NIGMS via NSF award DMR-1332208. AA is grateful to SABIC for the Career Development SABIC Chair.en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acsami.6b04508en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsami.6b04508.en
dc.titleCarrier Transport Enhancement in Conjugated Polymers through Interfacial Self-Assembly of Solution-State Aggregatesen
dc.typeArticleen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.eprint.versionPost-printen
dc.contributor.institutionSchool of Materials Science and Engineering, Shaanxi Normal University, Xian 710119, People’s Republic of Chinaen
dc.contributor.institutionThin Film Electronics AB, Westmansgatan 27, 58216 Linkoping, Swedenen
dc.contributor.institutionCornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14850, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorZhao, Kuien
kaust.authorKhan, Hadayat Ullahen
kaust.authorLi, Ruipengen
kaust.authorHu, Hanlinen
kaust.authorAmassian, Aramen
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