Surface Modification of Porous Photoelectrode Using Etching Process for Efficiency Enhancement of ZnO Dye-Sensitized Solar Cells

Table 3

Electrochemical impedance parameters of ZnO DSSC fabricated on etched films.

Sensitizer	Etching time (min)	()	()	()	(Hz)	(ms)
EY	0	16.8	22.3	169.6	8	19.9
	1	18.1	21.8	178.7	10	15.9
	2	17.8	32.2	179.9	8	19.9
	3	18.3	20.1	185.9	10	15.9
N719	0	20.1	10.7	243.6	8	19.9
	1	21.7	7.3	267.5	10	15.9
	2	20.5	8.0	256.3	12	13.3
	3	21.2	9.5	287.7	12	13.3