Optical properties of undoped and Al-doped ZnO thin films deposited via spray pyrolysis technique

Authors

Erick John Carlo De Guzman Solibet ⋅ PH National Institute of Physics, University of the Philippines Diliman
Raymund Curioso Veloz ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Horace Andrew Fernandez Husay ⋅ PH National Institute of Physics, University of the Philippines Diliman
Melvin John F. Empizo ⋅ JP Institute of Laser Engineering, Osaka University
Keisuke Kawano ⋅ JP Institute of Laser Engineering, Osaka University
Kohei Yamanoi ⋅ JP Institute of Laser Engineering, Osaka University
Nobuhiko Sarukura ⋅ JP Institute of Laser Engineering, Osaka University
Elmer Surat Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel Angud Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando Soriano Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We report the optical properties of undoped and aluminum (Al)-doped zinc oxide (ZnO) thin films to realize their potential scintillator applications. Hexagonal wurtzite ZnO thin films with varying Al-doping concentrations were successfully fabricated using spray pyrolysis technique on seeded glass substrates. Both undoped and Al-doped thin films exhibit up to 75% transmittances in the visible region and 20 to 30 ps emissions around 381 nm. Increasing the Al-doping, however, results in a slight reduction of the films' visible transmittances by 3 to 15% and an increase of the green emissions by one order of magnitude. At the moment, these observed effects of Al-doping on the optical properties of ZnO thin films are attributed to the presence of Al-related impurities. Nevertheless, our results provide vital insights on the suitability of Al-doped ZnO films as fast ultraviolet (UV) scintillators for molecular dynamics (MD) investigations.

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Issue

2018: Proceedings of the 36th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2018-PA-32

Section

Poster Session A (Materials Science, Instrumentation, and Photonics)

Published

2018-05-28

How to Cite

[1]

EJCDG Solibet, RC Veloz, HAF Husay, MJF Empizo, K Kawano, K Yamanoi, N Sarukura, ES Estacio, AA Salvador, and AS Somintac, Optical properties of undoped and Al-doped ZnO thin films deposited via spray pyrolysis technique, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-PA-32 (2018). URL: https://proceedings.spp-online.org/article/view/SPP-2018-PA-32.