Characterization and Investigation of NLO Properties of some Selected Electrodeposited Polythiophenes

In this work we study the electronic properties of ClO− doped polythiophenes and discuss the nonlinear optical properties of these organic 4 compounds galvanostatically electrodeposited on ITO glasses. The investigation on the electronic properties (band gap, flat band potential) was performed by means of a non-destructive optical technique, photocurrent spectroscopy (PCS). The investigation on the nonlinear optical response was carried out by means of second and third harmonic generation (SHG and THG) measurements. In particular, the effect of the oxidation state of the polymeric films was studied by comparing the NLO response of oxidized and reduced polythiophenes. Reduced poly- meric films …

Steady State Fluorescence Studies on Electrodeposited ZnO-Based Heterojunctions

Structural, Superficial and Optical Properties of Nanostructured Polycrystalline ZnO:X (Cu, Ag) Films

Influence of Ag, Cu dopants on the second and third optical harmonic generation of ZnO films

Electrochemical growth and physico-chemical characterization in organic medium of Nb2O5 thin films

Investigations about the energetics and the electrical properties of niobium thin film, electrochemically grown, were performed in an organic solution of acetonitrile and lithium perchlorate. The study of the energetics of the Nb O /organic solution interface was performed by means of a non-destructive optical technique, photocurrent 2 5 spectroscopy. By means of this technique, it was possible estimating the value of the flat band potential and locating conduction and valence band. A more cathodic value of flat band potential in respect with acidic solution was found in organic medium. From impedance spectra, the electrical circuit that gives best fitting values is constituted by two resis…