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Fluorinated Conjugated Polymers for Organic Photovoltaics: Synthesis by Direct Arylation and Structure-Property Relationships

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dc.contributor.advisorE. Bryan Coughlin
dc.contributor.advisorKenneth Carter
dc.contributor.advisorS. Thayumanavan
dc.contributor.authorHomyak, Patrick D
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.date2023-09-23T15:10:16.000
dc.date.accessioned2024-04-26T16:13:48Z
dc.date.available2024-04-26T16:13:48Z
dc.date.submittedSeptember
dc.date.submitted2016
dc.description.abstractOrganic photovoltaics are a promising low-cost alternative to traditional monocrystalline silicon photovoltaics. The active layer materials are conjugated organic materials, typically polymers. We describe several new series of p-type (donor) conjugated polymers, which we have used to evaluate structure-property relationships in an effort to improve OPV efficiencies. Specifically, our interest was directed towards the effect of fluorination on various conjugated polymers, as this has recently become a valuable tool for modifying polymer electrochemical properties and improving performance. In an effort to reduce the synthetic complexity of such conjugated polymers, decrease cost, and to embrace more environmentally friendly protocols, we have synthesized our materials using newer Direct Arylation Polymerization (DArP) techniques. With DArP, we have synthesized poly(thieno[3,4-b]thiophene-co-benzodithiophene), poly(diketopyrrolopyrrole)s and P(3HT-co-3H4FT)s with high molecular weight, with low percentages of structural defects. Furthermore, we have demonstrated that these materials perform equally to those synthesized by mainstream coupling methods such as GRIM, Stille or Suzuki coupling.
dc.description.degreeDoctor of Philosophy (PhD)
dc.description.departmentPolymer Science and Engineering
dc.identifier.doihttps://doi.org/10.7275/8680533.0
dc.identifier.orcidN/A
dc.identifier.urihttps://hdl.handle.net/20.500.14394/19962
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1752&context=dissertations_2&unstamped=1
dc.source.statuspublished
dc.subjectorganic photovoltaic
dc.subjectconjugated polymer
dc.subjectfluorinated polymer
dc.subjectdirect arylation polymerization
dc.subjectsemiconducting polymer
dc.titleFluorinated Conjugated Polymers for Organic Photovoltaics: Synthesis by Direct Arylation and Structure-Property Relationships
dc.typeopenaccess
dc.typearticle
dc.typedissertation
digcom.contributor.authorisAuthorOfPublication|email:phomyak06@gmail.com|institution:University of Massachusetts Amherst|Homyak, Patrick D
digcom.identifierdissertations_2/718
digcom.identifier.contextkey8680533
digcom.identifier.submissionpathdissertations_2/718
dspace.entity.typePublication
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