Synthesis and optical activity of KI-added ZnO microrods grown via hydrothermal method

  • Karen Nicole E. Mamucud National Institute of Physics, University of the Philippines Diliman
  • Kloudene A. Salazar National Institute of Physics, University of the Philippines Diliman
  • Verdad C. Agulto Institute of Laser Engineering, Osaka University
  • Melvin John F. Empizo Institute of Laser Engineering, Osaka University
  • Keito Shinohara Institute of Laser Engineering, Osaka University
  • Kohei Yamanoi Institute of Laser Engineering, Osaka University
  • Toshihiko Shimizu Institute of Laser Engineering, Osaka University
  • Nobuhiko Sarukura Institute of Laser Engineering, Osaka University
  • Roland V. Sarmago National Institute of Physics, University of the Philippines Diliman

Abstract

The effect of potassium iodide (KI) addition on the morphological, structural, and optical properties of zinc oxide (ZnO) was investigated. Modifications on the morphology of ZnO was observed as rods started to deteriorate as the concentration of KI was increased. No impurity peaks and phase shifts that correspond to a change in the crystal structure of ZnO was observed. The photoluminescence spectra of ZnO showed a UV and visible emission. For samples with KI, an intense visible emission, compared with that of the as-prepared ZnO, was observed which can be attributed to the introduction of defect states and impurities in the ZnO lattice. Thus, studying the effect of KI on the properties of ZnO, especially on the optical part, can help us understand specific defect emissions for us to broaden our knowledge in tuning the optical emissions of ZnO, which is still a controversial topic to discuss with.

Published
2020-09-12
How to Cite
[1]
K. N. Mamucud, K. Salazar, V. Agulto, M. J. Empizo, K. Shinohara, K. Yamanoi, T. Shimizu, N. Sarukura, and R. Sarmago. Synthesis and optical activity of KI-added ZnO microrods grown via hydrothermal method, Proceedings of the Samahang Pisika ng Pilipinas 38, SPP-2020-5G-02 (2020). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2020-5G-02.
Section
3A/4G/5G Condensed Matter and Materials Science (Short Presentations)