Table 2. Photovoltaic parameters of the DSSCs fabricated using TiO₂ photo-electrode films prepared without (the Normal films) and with different acetylene-black concentrations.

Acetylene-black (wt%)	Jsc (mA/cm2)	Voc (V)	FF	Efficiency(η) (%)
Normal	14.75	0.79	0.68	7.98
0.5	17.73	0.79	0.64	8.99
1.0	17.86	0.80	0.65	9.26
1.5	18.54	0.80	0.66	9.75
2.0	17.32	0.78	0.63	8.51
3.0	16.69	0.77	0.63	8.16