Effect of Solvent, Dye-Loading Time, and Dye Choice on the Performance of Dye-Sensitized Solar Cells

Figure 3

Current-voltage curves for DSSC devices prepared with 3, 5, 7, and 10 μm thick titania films impregnated with (a) N-719 and (c) N-749 dyes at optimum impregnation times. Quantum efficiency curves for DSSC devices prepared with 3, 5, 7, and 10 μm thick titania films impregnated with (b) N-719 dye and (d) N-749 at optimum impregnation times. The vertical axes on (a) and (c) show increased current for increased thickness for both dyes. The vertical axes on (b) show drop in quantum efficiency as films are made thicker for N-719 dye but they show increase in quantum efficiency for N-749 dye (d).

(a)

(b)

(c)

(d)