Solution-Processed Squaraine Bulk Heterojunction Photovoltaic Cells

Table 1. Summary of Solar Cell Characteristics of Different SQ:PC₇₀BM Blend Ratios and a SQ/C₆₀ Planar Control Cell

SQ:PC70BM ratio	Voc (V)	JSC (mA/cm2)	FF	J0 (mA/cm2)	ηp (%) at P0 = 1 sun	ηp (%) (max)	P0 at max ηp (mW/cm2)
3:1	0.68(±0.03)	1.79(±0.19)	0.26(±0.01)	2.8×10−2	0.32(±0.01)	0.32(±0.01)	100
1:1	0.81(±0.01)	3.61(±0.03)	0.31(±0.01)	1.1×10−2	0.90(±0.01)	0.90(±0.01)	100
1:2	0.87(±0.01)	8.33(±0.50)	0.29(±0.01)	3.7×10−7	2.1 (±0.1)	4.1(±0.2)	2
1:3	0.84(±0.01)	8.83(±0.34)	0.33(±0.01)	8.7×10−6	2.4 (±0.1)	3.0(±0.1)	2
1:6	0.89(±0.01)	8.85(±0.22)	0.35(±0.01)	6.2×10−7	2.7 (±0.1)	3.3(±0.1)	20
1:6/BCP	0.84(±0.01)	9.33(±0.12)	0.36(±0.01)	2.7×10−7	2.9 (±0.2)	3.8(±0.2)	0.2
SQ:PC60BM 1:6	0.78(±0.01)	9.17(±0.25)	0.42(±0.01)	1.6×10−5	3.0 (±0.1)	3.6(±0.1)	2
SQ/C60	0.79(±0.01)	8.90(±0.25)	0.54(±0.02)	1.2×10−6	3.8 (±0.2)	4.1(±0.2)	100
SQ/C70	0.72(±0.01)	8.29(±0.25)	0.45(±0.02)	1.1×10−5	2.7 (±0.2)	3.1(±0.2)	20

ACS Nano, 2010, 4 (4), pp 1927–1934