Structural and optical properties of ZnO microrods as fast and efficient UV scintillator materials

Authors

  • Hernanie T. Salazar ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Alexandra Santos Putungan ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Arnel A. Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Melvin John F. Empizo ⋅ JP Institute of Laser Engineering, Osaka University
  • Kohei Yamanoi ⋅ JP Institute of Laser Engineering, Osaka University
  • Ren Arita ⋅ JP Institute of Laser Engineering, Osaka University
  • Toshihiko Shimizu ⋅ JP Institute of Laser Engineering, Osaka University
  • Nobuhiko Sarukura ⋅ JP Institute of Laser Engineering, Osaka University

Abstract

Aqueous chemical grown zinc oxide (ZnO) microrods are found to be crystalline, uniform and well-faceted in terms of structure and morphology. From photoluminescence spectroscopy, these microrods interestingly exhibit ultraviolet (UV) near-band-edge emission at 392 nm (3.16 eV) without any visible or defect-related emission. The UV emission also intensifies with increasing excitation energy. Spectral narrowing is not observed indicating the non-existence of lasing nor stimulated emission from these structures. Having fast luminescence lifetimes less than 100 ps, these ZnO microrods then hold a promise as potential candidates for fast and efficient scintillator materials.

Proceedings 2015 SPP Cover

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Published

2015-06-03

Issue

2015: Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress

Section

Condensed Matter Physics and Materials Science

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How to Cite

[1]
HT Salazar, AS Putungan, AA Salvador, RV Sarmago, MJF Empizo, K Yamanoi, R Arita, T Shimizu, and N Sarukura, Structural and optical properties of ZnO microrods as fast and efficient UV scintillator materials, in Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress (Philippines, 2015), SPP-2015-5B-07. URL: https://proceedings.spp-online.org/article/view/1109
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