Table 2. Photovoltaic Parameters of the PSCs Made Using E-α-Fe₂O₃ ETLs with Different Molar Concentrations.

conc. (M)	scan direction	JSC (mA cm–2)	VOC (V)	FF (%)	PCE (%)	H.I.
0.1	reverse	17.56	1.06	60.88	11.33	0.11
	forward	16.56	0.95	64.16	10.09
0.2	reverse	19.21	1.05	64.48	13.01	0.04
	forward	18.37	1.05	64.99	12.54
0.5	reverse	13.91	0.8	67.05	7.46	0.17
	forward	11.83	0.78	66.71	6.16
1	reverse	11.78	0.72	58.81	4.99	0.19
	forward	10.61	0.64	59.42	4.03