Sample

E_OCV V^#

η %

i_ph^* μA cm⁻²

E_FB ≈ E_CB V^# (eV)

E_VB V^# (eV)

E_B V^# (eV)

N_D m⁻³

TiO₂/Ti

−0.57

8.03

285

−0.59 (−4.01)

2.28 (6.88)

−0.99

1.3 ´ 10²⁷

Ta-TiO₂/Ti

−0.68

12.04

446

−0.72 (−3.88)

2.07 (6.67)

−1.12

2.4 ´ 10²⁷