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dc.contributor.authorLudwigs, Sabine
dc.date.accessioned2015-07-01T10:02:22Z
dc.date.available2015-07-01T10:02:22Z
dc.date.created2015
dc.date.issued2015-07-01
dc.identifier.urihttp://hdl.handle.net/10630/9995
dc.descriptionConferencia Invitada Departamento Química-Físicaes_ES
dc.description.abstractThis talk will give an overview over current activities of my research team on the manipulation of semiconducting polymers based on thiophene units on the molecular and mesoscopic scale. On the molecular scale, we have recently managed to synthesize branched thiophene polymers by different chemical routes and by electropolymerization.[1,2] Relationships between the molecular architecture and functional properties such as absorption behavior and energy levels will be discussed and highlighted. On the mesoscopic scale our latest results on controlled crystallization of semiconducting polymer thin films will be presented. While our first studies had focused on the work-horse of the solar cell community poly(3-hexylthiophene)[3], we have recently started to work on two donor-acceptor copolymers: the p-type low bandgap (poly{[4,4-bis(2-ethylhexyl)-cyclopenta-(2,1-b:3,4-b’)dithiophene]-2,6-diyl-alt-(2,1,3-benzo-thiadiazol)-4,7-diyl}) (PCPDTBT)[4] and the n-type poly{[N,N’-bis(2-octyldodecyl)-1,4,5,8-naphthalene-dicarboximide-2,6-diyl]-alt-5,5’-(2,2’-bithiophene)} (PNDI2OD-T2)[5]. While PNDI2OD-T2 is known to be highly crystalline, PCPDTBT has long been regarded as marginally crystalline or even ‘amorphous’. We show that methods such as solvent-vapor crystallization or shear alignment allow us to induce and control crystalline order over large areas in thin films of both polymers. We find that changes in morphology are closely related to changes in absorption spectra. Furthermore the impact of differently crystallized films on charge transport and solar cell performance is discussed.es_ES
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.es_ES
dc.language.isospaes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectSemiconductores orgánicoses_ES
dc.subject.otherOrganic semiconductorses_ES
dc.subject.otherConjugated polymerses_ES
dc.subject.otherMorphologyes_ES
dc.subject.otherStructural orderes_ES
dc.subject.otherMacroscopic arrangementes_ES
dc.titleManipulation of functional polymers on the molecular and mesoscopic scalees_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.centroFacultad de Cienciases_ES
dc.relation.eventtitleConferencia invitadaes_ES
dc.relation.eventplaceMálaga, Españaes_ES
dc.relation.eventdateDepartamento Química Físicaes_ES
dc.cclicenseby-nc-ndes_ES


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