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

Table 1

Specific surface area and dye adsorption of etched ZnO films.

Etching time (min)	Specific surface area (m^2/g)	⁢Dye adsorption ⁢ (10^−9 mol/cm^2)
		EY	N719
0	2.52	9.33	43.67
1	5.71	9.65	44.85
2	5.30	11.04	53.03
3	4.29	10.19	43.10