Behaviour of Nb2O5/PPy contacts: From Schottky barriers to p-n junctions

In this work, a study of the photoelectrochemical responses of Nb₂O₅/PPy contacts fabricated in both organic and aqueous solutions is performed. From the comparison between the experimental data of PPy photodeposited on Nb₂O₅ in organic and in aqueous solutions, it is evident that the medium used for the photodeposition influences the absorption coefficient, the band gap and flat band potential values.