Table 2.

Structures of linkers in bisisoindigos 14 and 15 and the performance of OSCs based on these.

compound	linker	VOC, V	JSC, mA/cm2	FF, %	PCE, %
14a		0.82	5.32	49.2	2.16
14b		0.83	4.00	50.9	1.69
14c		0.78	6.59	46.9	2.40
14d		0.76	3.63	57.0	1.57
15a		0.74	9.25	43.6	3.00
15b		0.58	4.85	46.0	1.28