No abstract

No abstract

Polyvinyl alcohol(PVA)‐titanium dioxide(TiO2) polymer composite films are synthesized by well‐recognized and low cost method of solvent casting. The prepared composite films are characterized by FTIR, XRD, and FESEM. The real electric modulus (M’) spectra show large increment with frequency for 5wt% of TiO2 as compared to other compositions. The appearance of peaks for each concentration of TiO2 in M” spectra specifies that strong coupling in the movement of polymer motion and ions. The impedance plots of real impedance (Z’) versus imaginary impedance (Z”) shows semicircles, which diameter and thereby bulk resistance (Rb) is decreased with the loading of TiO2. AC conductivity (σAC) obeys the universal power law. The prepared PVA/TiO2 films can be used in a direct methanol fuel cell, and in optoelectronic devices.

No abstract

In the present investigation, we are discussing the results on photoelectrochemical cell performance of iron doped zinc selenide thin films by Electrodeposition. Thin films were deposited by Galvanostatically as well as potentiostatically at an aqueous solution onto stainless steel substrate as well as ITO (indium tin oxide). Precursor of zinc selenide is zinc sulphate (ZnSO4), selenium dioxide (SeO2) and ferrous sulphate (FeSO4). The deposited films were characterized by different physicochemical characterization such as, for structural study X-ray diffraction study was used, Scanning electron microscopy (SEM) for surface morphology, optical absorption study made by UV spectrometer and it showed that the semiconductor nature of the electrodeposited zinc selenide thin films with band gap 2.6 eV and PEC performance shows that Isc is 360 mA and Voc is 135 mV.