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Diketopyrrolopyrrol...
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Negash, AsfawAddis Ababa University,Universiteit Hasselt
(author)
Diketopyrrolopyrrole-based terpolymers with tunable broad band absorption for fullerene and fullerene-free polymer solar cells
- Article/chapterEnglish2019
Publisher, publication year, extent ...
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2019
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Royal Society of Chemistry (RSC),2019
Numbers
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LIBRIS-ID:oai:research.chalmers.se:57b26005-bdbc-4b08-ba1d-469f141b3376
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https://doi.org/10.1039/c8tc06407eDOI
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https://research.chalmers.se/publication/509337URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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A series of random terpolymers with donor-acceptor-donor-acceptor molecular configuration, comprising fluorinated benzotriazole (FTAZ) and thienothiophene-capped diketopyrrolopyrrole (TTDPP) as the first and second electron-accepting moieties and thienyl-substituted benzodithiophene (BDTT) as the electron-donating unit, are designed for polymer solar cells. By tuning the ratio of TTDPP and FTAZ, the optoelectronic properties of the terpolymers are systematically varied. All materials exhibit a broad absorption window spanning from 300 to 900 nm, illustrating the success of the terpolymer approach. Fullerene-based polymer solar cells fabricated from the terpolymer with the highest content of TTDPP afford a power conversion efficiency of 5.7%, with a short-circuit current density of 15.2 mA cm -2 . On the other hand, solar cell devices composed of the terpolymer with the lowest content of TTDPP and the narrow gap non-fullerene acceptor IEICO-4F exhibit a higher efficiency of 6.3%, with an enhanced short-circuit current density of 17.5 mA cm -2 , as a result of a better complementarity in the absorption of the donor and acceptor materials and well-balanced charge carrier mobilities. This efficiency represents the best value for fullerene-free polymer solar cells based on DPP-containing polymers to date.
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Genene, Zewdneh,1983Addis Ababa University,Ambo University(Swepub:cth)zewdneh
(author)
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Thiruvallur Eachambadi, RaghavendranUniversiteit Hasselt
(author)
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Kesters, JurgenUniversiteit Hasselt
(author)
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Van Den Brande, NikoVrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB)
(author)
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D'haen, JanUniversiteit Hasselt
(author)
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Penxten, HuguetteUniversiteit Hasselt
(author)
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Abdulahi, Birhan A.Addis Ababa University
(author)
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Wang, Ergang,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ergang
(author)
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Vandewal, K.Universiteit Hasselt
(author)
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Maes, WouterUniversiteit Hasselt
(author)
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Mammo, W.Addis Ababa University
(author)
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Manca, JeanUniversiteit Hasselt
(author)
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Admassie, ShimelisAddis Ababa University
(author)
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Addis Ababa UniversityUniversiteit Hasselt
(creator_code:org_t)
Related titles
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In:Journal of Materials Chemistry C: Royal Society of Chemistry (RSC)7:11, s. 3375-33842050-75342050-7526
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Negash, Asfaw
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Chalmers University of Technology