Otical and electrical prpoprities of MgO thin films

Abstract

In this work, Magnesium Oxide (MgO) thin films were deposited on galas substrate (350°C) by pneumatic technique. The effects of concentration molarity in the rang (0.05; 0.1; 0.15 and 0.2M) were successfully investigated. The high optical transmission was found in the deposited MgO thin film with lowest molarity it is 60%. The transmittance of MgO thin films decreases rapidly as the wavelength increases in the range of (300-400) nm, and then increases slowly at higher wavelengths. The band gap of MgO thin films decreases as the molarity increases and the band gap values range between 4.8-4.3 eV. The Urbach energy values range between 375-519 meV. The electrical resistance of our films in the order 2*107Ω.