Alumina and Hafnia ALD Layers for a Niobium-Doped Titanium Oxide Photoanode

Table 1

The DSC performance parameters for alumina and hafnia ALD Nb : TiO₂ photoanode coated with different cycles.

	𝐽sc		𝑉oc		𝜂		FF		Dyeloading×10^−7
	(mA/cm^2)		(<±0.01 Volt)		(%)		(<±0.01)		(mol/cm^2)
	Al2O3	HfO	Al2O3	HfO	Al2O3	HfO	Al2O3	HfO	Al2O3	HfO
0 cycles	14.25 ± 0.15	14.25 ± 0.11	547	547	2.93 ± 0.04	2.93 ± 0.04	0.38	0.38	2.20	2.20
5 cycles	15.1 ± 0.17	16.43 ± 0.08	600	698	3.06 ± 0.05	4.16 ± 0.03	0.34	0.36	2.29	2.35
10 cycles	17.3 ± 0.14	15.9 ± 0.15	616	663	3.5 ± 0.07	5.12 ± 0.06	0.33	0.45	2.26	2.27
15 cycles	18.53 ± 0.16	14.4 ± 0.11	610	675	3.55 ± 0.03	3.72 ± 0.04	0.31	0.38	2.16	1.77
20 cycles	14.4 ± 0.2	—	623	—	3.1 ± 0.06	—	0.35	—	1.89	—