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- Title
A Very Low Band Gap Diketopyrrolopyrrole--Porphyrin Conjugated Polymer.
- Authors
Bucher, Léo; Tanguy, Loïc; Fortin, Daniel; Desbois, Nicolas; Harvey, Pierre D.; Sharma, Ganesh D.; Gros, Claude P.
- Abstract
A porphyrin--diketopyrrolopyrrole-containing polymer (poly(porphyrin--diketopyrrolopyrrole) (PPDPP)) shows impressive molar absorption coefficients from λ=300 to 1000 nm. The photophysical and structural properties ofPPDPP have been studied. With PPDPP as the electron donor and [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) as the electron acceptor, the bulk heterojunction polymer solar cell showed overall power conversion efficiencies of 4.18 and 6.44% for as-cast and two-step annealing processed PPDPP:PC71BM (1:2) active layers, respectively. These results are quite impressive for porphyrin-containing polymers, especially when directly included in the π-conjugated backbone, and offer interesting perspectives for the design of new materials based on this chromophore.
- Subjects
BAND gaps; PORPHYRINS; CONJUGATED polymers; HETEROJUNCTIONS; SOLAR cells
- Publication
ChemPlusChem, 2017, Vol 82, Issue 4, p625
- ISSN
2192-6506
- Publication type
Article
- DOI
10.1002/cplu.201700035