Add time:07/11/2019         Source:sciencedirect.com

Three alternating (X–DADAD)n-type copolymers bearing different building blocks (X) in combination with benzoxadiazole (A) and thiophene (D) units were synthesized and studied as photoactive materials in organic solar cells. Superior short circuit currents and power conversion efficiencies (up to 4.4%) were reached when thiophene rather than fluorene or benzodithiophene was used as an X unit.

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