4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells - Hermerschmidt,F; Kalogirou,AS; Min,J; Zissimou,GA; Tuladhar,SM; Ameri,T; Faber,H; Itskos,G; Choulis,SA; Anthopoulos,TD; Bradley,DDC; Nelson,J; et al. (JOURNAL OF MATERIALS CHEMISTRY C, 2015)