Synthesis of the (X-DADAD)n-type conjugated polymers with 2,1,3-benzoxadiazole acceptor blocks and their application in organic solar cells |
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| Authors: | Alexander V. Akkuratov Fedor A. Prudnov Liana N. Inasaridze Pavel A. Troshin |
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| Affiliation: | 1. The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Academician Semenov Avenue 1, Chernogolovka, Moscow Region 142432, Russian Federation;2. Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow 143025, Russian Federation |
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| Abstract: | Two polymers with benzoxadiazole acceptor units were synthesized and investigated as electron donor materials in organic solar cells. Variation of the alkyl substituents was shown to significantly affect the optoelectronic properties of the polymers. In particular, the polymer HOMO energy level was lowered by 0.1 eV, while maintaining the same band gap, by replacement of the 2-ethylhexyl side-chains with the 2-hexyldecyl group. This modification also resulted in a higher open circuit voltage of the solar cells. |
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| Keywords: | Benzoxadiazole Thiophene Conjugated polymers Organic solar cells |
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