Journal Article organic solar cells efficiency solid additive all-polymer solar cells charge recombination fill factor organic electronics power conversion efficiency sequential deposition Oxides Research Support, Non-U.S. Gov't binary devices binary organic solar cells blade-coating blend morphology bulk-heterojunctions burn‐in loss carbon nanotubes charge-transport layers clusteroluminescence configurable organic field‐effect transistors conjugated/insulating polymer blends coplanar transistors device stability dimer acceptor dual-slot-die coating enhanced multiwavelength light response enhancement-mode thin-film transistors flexible organic transistors