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Towards a highly efficient organic photovoltaic, new donoracceptor‐type copolymers are proposed by S. Seki and co‐workers. The copolymers comprise benzobisthiazole as a weak donor rather than an acceptor. The molecular design and device tuning of BBTz‐based copolymers coupled with thienopyrroledione and benzothiadiazole are reported on page 28, by means of a device‐less evaluation of laser and Xe‐flash...
New donor–acceptor‐type copolymers comprised of benzobisthiazole (BBTz) as a weak donor rather than acceptor are proposed. This approach can simultaneously lead to deepening the HOMO and LUMO of the polymers with moderate energy offset against fullerene derivatives in bulk heterojunction organic photovoltaics. As a proof‐of‐concept, BBTz‐based random copolymers conjugated with typical electron acceptors:...
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