“…[6][7][8] Green solvents are environmentally friendly solvents which pose low environmental impact in both production and use, and can include bio-solvents. 9 The transition to green solvent processing and green synthetic techniques has been reported in various fields, including catalyst development, 10,11 synthesis of inorganic semiconductors for solar cell applications, 12 medicinal chemistry, 13,14 and analytical chemistry. 15 Shifting from halogenated solvents (such as chloroform, chlorobenzene and o-dichlorobenzene) to green solvents requires substantial film microstructure optimisation, 16,17 due to the vast effect that the casting solvent has on self-assembly of the complex donor-acceptor film morphology for these systems.…”