Figure 8. (a-f) The film-forming process of different cosolvents. Reproduced from [41]. (g, h) Analysis of in situ GIWAXS results of 0% DIO and 0.3% DIO systems. Reproduced from [117]. In situ reflection and absorbance UV-vis of P(T3-TPD):PC71BM films cast with (i) w/o and DIO (j) DIO. Reproduced from [118].