Synthesis and characterization of new poly(thieno[3,4-d ]thiazole) derivatives for photovoltaic applications

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DOIResolve DOI: http://doi.org/10.1021/ma201360r
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TypeArticle
Journal titleMacromolecules
ISSN0024-9297
Volume44
Issue18
Pages71847187; # of pages: 4
SubjectAlternating copolymer; Bulk heterojunction solar cells; HOMO energy levels; Optimization process; Photovoltaic applications; Power conversion efficiencies; Conjugated polymers; Conversion efficiency; Copolymers; Polycondensation; Solar power generation; Heterojunctions
AbstractWe report the synthesis of new push-pull conjugated polymers for bulk heterojunction solar cells based on benzo[1,2-b:4,5-b′]dithiophene (push) and thieno[3,4-d]thiazole (TTz) (pull) derivatives. Stille polycondensation between distannyl-BDT derivatives with 4,6-dibromo-2-octylthieno[3,4-d]thiazole led to two alternating copolymers, namely PBDTTTz-1 and PBDTTTz-2, which have a bandgap of 1.8 and 1.7 eV, respectively. Both copolymers are stable in air with HOMO energy level of -5.3 eV for PBDTTTz-1 and -5.4 eV for PBDTTTz-2. Both copolymers have been tested in bulk heterojunction solar cells, and preliminary results (without any optimization process) show promising power conversion efficiency of 1.4% for PBDTTTz-1 and 1.7% for PBDTTTz-2. © 2011 American Chemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271717
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Record identifiera51deff6-070a-4b9a-980b-1e6de71d0768
Record created2014-03-24
Record modified2016-05-09
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