Table 3.

Photovoltaic parameters of CIGSSe solar cells under simulated AM 1.5 G, 100 mW cm⁻² illumination.

Solar cells’ Condition	V oc (V)	j sc (mA cm−2)	FF (%)	η (%)	R s (Ω cm2)	Rsh (Ωcm2)
0.0 M NaCl	0.505	27.26	60.73	8.36	3.16	217.54
0.1 M NaCl	0.504	29.02	58.05	8.49	2. 84	227.86
0.2 M NaCl	0.564	29.30	65.59	10.83	2.88	374.51
0.3 M NaCl	0.550	29.24	62.49	10.05	2.92	327.44
0.4 M NaCl	0.542	29.92	58.78	9.37	2.79	221.45
0.5 M NaCl	0.520	28.23	63.06	9.26	2.66	247.76