Dibenzo[b,def]chrysene Derivatives: Solution-Processable Small Molecules that Deliver High Power-Conversion Efficiencies in Bulk Heterojunction Solar

Table 1. BHJ Solar Cell Parameters for Optimized Thickness and DBC:PCBM Ratios

	device
	a	b	c	d
donor material	3	3	3	2
DBC: PCBM (mg: mg)	10:10	10:10	20:20	10:10
solvent (1 mL)	PhCl	CHCl3	CHCl3	CHCl3
optimum spin speed (rpm)	3000	4000	8500	4500
optimum thickness (nm)	150	90	85	75
VOC (V)	0.26	0.78	0.83	0.91
JSC (mA/cm2)	0.003	4.73	6.55	5.19
fill factor	0.28	0.41	0.41	0.47
optimized efficiency, η (%)	0.005	1.51	2.25	2.22

10.1021/cm9028337