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

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1021/ma2013496
Author	Search for: Gendron, D.; Search for: Morin, P.-O.; Search for: Berrouard, P.; Search for: Allard, N.; Search for: Aïch, B.R.¹; Search for: Garon, C.N.; Search for: Tao, Y.¹; Search for: Leclerc, M.
Affiliation	National Research Council of Canada
Format	Text, Article
Subject	Benzothiadiazoles; 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
Abstract	A 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	2011
In	Macromolecules 44, no. 18 (2011): 7188–7193.
Language	English
Peer reviewed	Yes
NPARC number	21271633
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Record identifier	20cbd2e5-f015-491d-a4b2-a0f71f8bae62
Record created	2014-03-24
Record modified	2020-04-21

Date modified:: 2024-07-28