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.

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Issue

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

Article ID

SPP-2015-5B-07

Section

Condensed Matter Physics and Materials Science

Published

2015-06-03

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, Proceedings of the Samahang Pisika ng Pilipinas 33, SPP-2015-5B-07 (2015). URL: https://proceedings.spp-online.org/article/view/1109.