Improving the exciton dissociation of polymer/fullerene interfaces with a minimal loading amount of energy cascading molecular dopant

In this work, a novel star-shaped conjugated small molecule, 2,2′,2′′-((benzo[1,2- b :3,4- b ′:5,6- b ′′]trithiophene-2,5,8-triyltris(3-(2-ethylhexyl)thiophene-5,2-diyl))tris(methanylylidene))trimalono-nitrile (BTTCN), with a benzotrithiophene donor unit as the core structure and the electron-withdr...

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