Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene

Table 1

Photovoltaic characteristics of DSi-6T : PCBM and DH-6T : PCBM blended cells.

Device name	𝑉oc (V)	𝐽sc (mA/cm^2)	FF	PCE (%)
DSi-6T : PCBM
1 : 4	0.61	1.26	0.39	0.30
1 : 5	0.60	1.29	0.42	0.32
1 : 6	0.57	0.88	0.37	0.18
DSi-6T : PCBM (with TiO2)
1 : 4	0.64	1.34	0.50	0.42
1 : 5	0.60	1.34	0.55	0.44
1 : 6	0.62	1.07	0.49	0.32
DH-6T : PCBM
1 : 4	0.52	0.62	0.33	0.11
1 : 6	0.63	0.60	0.44	0.17
DH-6T : PCBM (with TiO2)
1 : 4	0.51	0.61	0.42	0.13
1 : 6	0.65	0.57	0.56	0.21

aOpen circuit voltage (𝑉_oc), short circuit current density (𝐽_sc), fill factor (FF), and PCE at DSi-6T and DH-6T as electron donors: PCBM at weight ratio. The device performance was consistent and reproducible. The active area is 0.12 cm².