The Synthesis of NiO/TiO₂ Heterostructures and Their Valence Band Offset Determination

Figure 2

The XPS measurement for the calculation of valence-band offset of the developed heterojunction of p-type NiO/n-type TiO₂ nanostructures, (a) Ni 2p spectrum of pure NiO, (b) Ti 2p spectrum of pure TiO₂, (c) Ni 2p spectrum of heterostructures, and (d) Ti 2p spectrum of heterostructures.

(a)

(b)

(c)

(d)