Precise Control of Phase Separation Enables 12% Efficiency in All Small Molecule Solar Cells. - Bin, Haijun; Angunawela, Indunil; Qiu, Beibei; Colberts, Fallon J. M.; Li, Mengmeng; Dyson, Matthew J.; Wienk, Martijn M.; Ade, Harald; Li, Yongfang; Janssen, René A. J. (Advanced Energy Materials, 2020)