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Effect of Pulsed Laser Annealing on the optoelectronic properties of ZnO thin films

ORAL

Abstract

ZnO thin films have attracted great attention recently due to their unique electronic and optical properties. Though these wide bandgap semiconductors are inherently n-type due to oxygen vacancies, both n-type and p-type ZnO is required for their effective implementation in electronic devices. This research aims to achieve p-type semiconductor through pulsed laser annealing (PLA) and controlling other electronic and optical properties necessary for optoelectronic applications. Thin films of ZnO have been grown on different substrates using pulsed laser deposition and spin coating. Then PLA of the film is done by changing laser parameters (Energy, Frequency, pulse width, number of shots) in different environments. Structural quality of the annealed films is investigated using X-ray diffraction, Electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Optoelectronic properties of the PLA films are investigated using UV-VIS and photoluminescence spectroscopy and Electrical transport measurement. Structural properties are also investigated from MD simulation and DFT calculation for both bulk and thin film of ZnO to validate the experimental data. The detailed analysis of experimental data and simulation results will be discussed in this presentation.

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Presenters

  • Md Abu Zobair

    Department of Physics, Astronomy and Material Science, MIssouri State University, 921 S John Q Hammons Pkwy, Springfield, MO 65897, USA

Authors

  • Md Abu Zobair

    Department of Physics, Astronomy and Material Science, MIssouri State University, 921 S John Q Hammons Pkwy, Springfield, MO 65897, USA

  • Bishwajite Karmakar

    Physics, Astronomy and Materials Science, Missouri State University, Department of Physics, Astronomy and Material Science, MIssouri State University, 921 S John Q Hammons Pkwy, Springfield, MO 65897, USA, Missouri State Univ

  • M.F.N. Taufique

    Pacific Northwest National Laboratory, Pacific Northwest National Laboratory, 902 Battelle Blvd, P.O.Box 999, Richland, Washington, 99352, United States

  • Ariful Haque

    Materials, Science and Engineering, North Carolina State University, Department of Electrical & Computer Engineering and Department of Material Science and Engineering, North Carolina State University, Department of Materials Science and Engineering, North Carolina State University, Department of Electrical & Computer Engineering And Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA

  • Kartik Ghosh

    Physics, Astronomy and Materials Science, Missouri State University, Department of Physics, Astronomy and Material Science, MIssouri State University, 921 S John Q Hammons Pkwy, Springfield, MO 65897, USA, Missouri State Univ