Data on the effect of improved TiO/FTO interface and Ni(OH) cocatalyst on the photoelectrochemical performances and stability of CdS cased ZnInS/TiO heterojunction.

This data article presents the experimental evidences of the effect of TiO-fluorine doped tin oxide interface annealing and Ni(OH) cocatalysts on the photoelectrochemical, structural, morphological and optical properties of Ni(OH)/CdS/ZnInS/TiO heterojunction. The Raman spectroscopy exhibits the sharp features of the rutile phase of TiO and in agreement with the X-ray diffraction data. The band gap energy of the 500 °C sample was found to be 3.12 eV, further it was increased to 3.20, 3.22 eV for samples annealed at 600 and 700 °C respectively. The decrease in the band gap energy at 500 °C related to the oxygen vacancies and was analysed by photoluminescence spectroscopy analysis. The synthesis, characterization methods and other experimental details of TiO based heterostructure are also provided. The presence of CdS and ZnInS coating on surface of TiO electrodes providing a high surface area, extended visible absorption and helps to improve the change separation. This data article contains data related to the research article entitled "Highly efficient and stable 3D Ni(OH)/CdS/ZnInS/TiO heterojunction under solar light: Effect of an improved TiO/FTO interface and cocatalyst" (Mahadik et al., 2017) [1].