American Journal of Optics and Photonics

Volume 4, Issue 4, August 2016

  • The Influence of Oxygen Pressure on the Photoluminescent Properties of Pulsed Laser Ablated SrAl 2O 4:Eu 2+ , Dy 3+ Thin Films

    P. D. Nsimama

    Issue: Volume 4, Issue 4, August 2016
    Pages: 25-31
    Received: Sep. 29, 2016
    Accepted: Oct. 09, 2016
    Published: Oct. 31, 2016
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    Abstract: SrAl2O4:Eu2+, Dy3+ thin films were prepared using the pulsed laser deposition (PLD) technique and the variation of morphological, photoluminescence and structural properties with the oxygen pressure were studied. The atomic force microscopy (AFM) and scanning electron microscopy (SEM) were employed in the films morphological measurements. The He-Cd... Show More
  • Configuration Dependent Electronic and Optical Properties of WZ-CuInS2

    Bo Gao, Fu-Ling Tang, Hong-Tao Xue, Fu-Zhen Zhang, Yu-Wen Cheng

    Issue: Volume 4, Issue 4, August 2016
    Pages: 32-39
    Received: Sep. 15, 2016
    Accepted: Oct. 13, 2016
    Published: Nov. 03, 2016
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    Abstract: We used the first-principles calculations based on density functional theory to calculate the electronic and optical properties of wurtzite CuInS2 (WZ-CuInS2) in which the copper and indium atoms share the same lattice site. It is found that WZ-CuInS2 is metallic for local aggregative indium and copper atomic configurations, or is a semiconductor f... Show More