Synthesis and photovoltaic properties of poly(dithieno[3,2-b:2′, 3′-d ]germole) derivatives

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DOIResolve DOI: http://doi.org/10.1021/ma2013496
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TypeArticle
Journal titleMacromolecules
ISSN0024-9297
Volume44
Issue18
Pages71887193; # of pages: 6
SubjectBenzothiadiazoles; Comonomers; Low bandgap polymers; Optical and electronic properties; Photovoltaic applications; Photovoltaic property; Power conversion efficiencies; Stille coupling; UV-Vis absorption spectroscopy; Conversion efficiency; Cyclic voltammetry; Electronic properties; Photovoltaic effects; Size exclusion chromatography; Thermoanalysis; Ultraviolet spectroscopy; Polymers
AbstractA series of new dithieno[3,2-b:2′,3′-d]germole copolymers have been synthesized and characterized. The dithienogermole unit has been polymerized with different aromatic comonomers such as the benzothiadiazole (PGe1-C8 and PGe1-EH) and thieno[3,4-c]pyrrole-4,6-dione (PGe2). Suzuki and Stille coupling polymerizations under various conditions have been utilized. The polymers were then characterized by size-exclusion chromatography and thermal analyses (TGA, DSC), and their optical and electronic properties were investigated by UV-vis absorption spectroscopy and cyclic voltammetry. These low bandgap polymers (1.3-1.7 eV) have also been tested for photovoltaic applications; the best result was achieved with polymer PGe2, which shows a power conversion efficiency of 4.1%. © 2011 American Chemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271633
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Record identifier20cbd2e5-f015-491d-a4b2-a0f71f8bae62
Record created2014-03-24
Record modified2016-05-09
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