Homocoupling defects in a conjugated polymer limit exciton diffusion

Martin Streiter, Daniel Beer, Fabian Meier +5

Copolymers such as PCDTBT (poly(N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl- 2',1',3'-benzothiadiazole))) are commonly employed as donor material in bulk heterojunc…