Optical properties of ZnO:TM (TM = Cr, Mn and Co) layers obtained by pulsed laser deposition technique

Abstract

We study the optical properties of zinc-chromium (ZnCrO), zincmanganese (ZnMnO) and zinc-cobalt (ZnCoO) oxide layers grown on sapphire substrates, using a pulsed laser deposition technique. The influence of target composition and post-growth annealing on the optical transmission of the films and their bandgap energy are analyzed.