Electrochemical Deposition of Hybrid Material Based on Polyindole and CdTe/CdS
The results of the influence of electrochemical deposition conditions on the properties of hybrid material are presented. The polyindole was electrodeposited into the membranes to form well-oriented polymer matrix. The size of nanowires and their packing were varied by monomer concentration and time. The CdTe films were obtained electrochemically and chemically into and on the top of PIN nanowires. Initially, the polyindole properties such as electrochemical behavior in different solutions, wires morphology and structure were investigated by various techniques. After that, CdTe modification of the hybrid was studied by different techniques as well. The morphology was explored by Scanning Electron Microscopy, the chemical composition was investigated by Raman and IR spectroscopy. The UV-vis spectrometry was used to estimate the band gap energy of hybrid. It was found that size and packing of PIN nanowires determines the morphology of CdTe into and on the top wires. The chemical composition and doping type depends on the deposition parameters such as bath composition and ions concentration, deposition time and potential. The photoelectrochemical measurements carried out in polysulphide solution showed that application of polyindole layer improved the photostability of CdTe and increased the value of photocurrent.