Mg-composition induced effects on the physical behavior of sprayed Zn1-xMgxO films

Kotte Ramakrishna Reddy, Pathi Prathap, Naidu Revathi, A. S. N. Reddy, Robert Miles

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    20 Citations (Scopus)

    Abstract

    Thin films of Zn 1- x Mg x O, with Mg compositions in the range, 0 <x <0.4, have been deposited onto soda-lime glass substrates using chemical spray pyrolysis. The effects of altering the alloy composition on the chemical and physical properties of the layers were investigated using X-ray photoelectron spectroscopy, atomic force microscopy, Raman, optical and electrical measurements. The data shows systematic shifts in the properties of the layers with Mg-content. In particular, the optical absorption data showed that the influence of Mg-content on the energy gap of Zn 1- x Mg x O films is significant. Layers with x = 0.24 had an optical energy band gap, E g = 3.87 eV. The best layers produced had properties appropriate for application as Cd-free buffer layers in copper indium gallium selenide (CIGS) solar cells.
    Original languageEnglish
    Pages (from-to)1275-1278
    JournalThin Solid Films
    Volume518
    Issue number4
    DOIs
    Publication statusPublished - 2009

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