New triphenylamine organic dyes containing dithieno[3,2-b:2′,3′-d]pyrrole (DTP) units for iodine-free dye-sensitized solar cells†
Abstract
Three dithieno[3,2-b:2′,3′-d]pyrrole (DTP) units with different hexyloxyphenyl (HOP) substituents have been developed for