An electron acceptor featuring a B-N covalent bond and small singlet-triplet gap for organic solar cells

摘要

BNTT2F, an electron acceptor featuring a B-N covalent bond and singlet-triplet gap as low as 0.20 eV via the multiple resonance effect, is developed for organic solar cells. The optimized device based on BNTT2F offered an efficiency of 8.3%, suggesting the great prospect of B-N covalent bond-containing pi-conjugated molecules for photovoltaics.

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