Table 1.

Average and best device data based on PBDTTT‐C‐T:DC‐IDT2T or PBDTTT‐C‐T:PC₇₁BM films with different processing solvent and thermal annealing (the average data were calculated from 10 devices)

Active layer	Processing solvent	V OC [V]	J SC [mA cm−2]	Calculated J SC [mA cm−2]	FF [%]	PCE [%]
						Average	Best
PBDTTT‐C‐T:DC‐IDT2T	CF	0.8253	2.089	2.135	37.23	0.642	0.674
PBDTTT‐C‐T:DC‐IDT2T	o‐xylene	0.5075	0.502	0.525	27.44	0.070	0.075
PBDTTT‐C‐T:DC‐IDT2T	DCB	0.7836	1.598	1.624	31.78	0.398	0.427
PBDTTT‐C‐T: DC‐IDT2T	CB	0.7748	2.847	2.958	37.22	0.821	0.867
PBDTTT‐C‐T: DC‐IDT2T	CBa)	0.7983	3.086	3.204	40.11	0.988	1.019
PBDTTT‐C‐T: PC71BM	DCBb)	0.6292	7.026	7.118	43.59	1.927	2.088

^a)Annealing at 120 °C for 1 min;

^b)5% (v/v) 1,8‐diiodooctane (DIO).