Optical and Electrical Properties of TiO2 Doped Fe2O3 Thin Film Prepared by Spray Paralysis Technique

Abstract

In this work, iron oxide (Fe2O3) and titanium oxide (TiO2) doping (Fe2O3) thin films have been prepared by spray pyrolysis technique (SPT) on a glass substrate. We have studied the effects of various doping percentage of (TiO2) on (Fe2O3) optical and electrical properties. The optical parameters of the prepared films as absorbance, absorption coefficient, optical energy gap and refractive index have been calculated for all prepared films. D.C conductivity and Hall effect for all films are measured. The results showed that absorbance of prepared films decreases with increasing percentage of (TiO2) this lead to increase the energy gap and conductivity decreased with increasing of percentage of (TiO2) as well as the results showed throughout the study that all films have tow activation energy, its value increase with increasing of percentage of (TiO2). Hall effect measurement showed all films have n-type conductivity.

Determination of Optical Energy Gap for Copper oxide at Different Temperatures

“…Therefore, if a plot of hf versus forms a straight line, it can normally be inferred that there is a direct band gap, measurable by extrapolating the straight line to the = 0 axis. On the other hand, if a plot of hf versus∝ 1 2 forms a straight line, it can normally be inferred that there is an indirect band gap, measurable by extrapolating the straight line to the = 0 axis (assuming Ep≈ 0) we get [13].…”

Effect of Transition Metal Dopant on the Electrical Properties of ZnO-TiO2 Films Prepared by PLD Technique

“…It is observed from these figures the electrical conductivity of ZnO-TiO 2 films depends on the dopant metal oxide. The electrical conductivity has been measured as a function of temperature for films in the range (303-423) K. The change of electrical conductivity with temperature for most cases of intrinsic semiconductors is given by the following equation [17]:…”