Chemosynthesis, characterization and PEC performance of CdZn(SSe)2 thin films by arrested precipitation technique (APT)

Abstract

In the present work, we have used simple, cost effective arrested precipitation technique (APT) to deposit CdZn(SSe) 2 thin films. Preparative conditions were optimized during the initial stage of experimentation to obtain good quality CdZn(SSe) 2 thin films. The as-deposited film was studied for its structural, morphological, optical, and compositional analysis by XRD, SEM, UV-Vis-NIR spectrophotometer and EDSanalysis techniques respectively. XRD analysis revealed that the film was polycrystalline in nature and exhibit hexagonal crystal structure. The SEM micrograph shows the formation of spherical surface morphology. EDS results confirm the presence of Cd, Zn, S and Se elements in the synthesized thin film. The band gap value of thin film was calculated from the absorption spectra which is found to be 1.8 eV. From J-V measurements, photo-conversion efficiency is found to be 0.07%.