Electrochemical performance of the V2O5 and VO2 thin films synthesized by spray pyrolysis technique

In this study,we focus on the thin films growth based on vanadium oxide using the chemical reactive liquid spray technology (rcslp) deposited on glass substrates. the flow rate was set at 1.5 ml/min,the substrate temperature at 450°c,the deposition time at 10 min and then the solution concentration at different values (0.05m,0.025m and 0.015m). the influence of all these parameters on the structural and optical properties of thin films of v2o5 and vo2 was carefully studied. the decrease of the solution molar concentration from c=0.05m to c=0.015m was conducted to transform v2o5 to vo2(b) and then vo2(m). the transparency has increased from 14% to 70% while changing the concentration of solution from 0.05m to 0.015m. the electrochemical behavior was investigated in (0.5 m liclo4 propylene carbonate (pc)) solution using a three-electrode cell. the results of the xrd diagrams,the sem images,the electrical measurement and the spectral transmission show clearly the transformation of v2o5 to vo2(b) and then vo2(m). © 2017,university of mohammed 1er oujda morocco.