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A series of donor–acceptor (D–A) alternating copolymers (P1, P2 and P3) with thiophene–benzothiadiazole–thiophene–triphenylamine main chain have been synthesized by Suzuki polycondensation. P1, P2, and P3 possess medium optical band gaps of 1.99, 1.97 and 1.93eV, respectively. Bulk heterojunction polymer solar cells (BHJ PSCs) with these polymers as donor and PC 71 BM as acceptor showed power...
High performance solar cells fabricated from an easily synthesized donor‐acceptor polymer show maximum power point up to 6.0 mW cm−2, with an open‐circuit voltage of 0.89 V, short‐circuit current density of 10.5 mA cm−2 and fill factor of 0.64, making this polymer a particularly promising candidate for high‐efficiency low‐cost polymer solar cells.
We have explored new organic materials and fabrication methods to fabricate organic photodiodes and light emitting diodes. Grafting of a fullerene derivative to a polythiophene backbone yielded an integrated acceptor-donor polymer that we used as the active material in organic photodiodes. Using a method of soft lithography, soft embossing, we fabricated submicron structures to be used as organic...
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