A comparative study of ZnO thin film and nanorod samples prepared by wet-chemical methods

Authors

Erick John Carlo D. Solibet ⋅ PH National Institute of Physics, University of the Philippines Diliman
Raymund C. Veloz ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Ma. Cecilia M. Angub ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Horace Andrew F. 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
Toshihiko Shimizu ⋅ JP Institute of Laser Engineering, Osaka University
Nobuhiko Sarukura ⋅ JP Institute of Laser Engineering, Osaka University
Arnel A. Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando S. Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We present a comparative study of the optical properties of zinc oxide (ZnO) thin film and nanorods prepared by wet-chemical methods. Crystalline thin film and nanorod samples were successfully fabricated on seeded substrates using spray pyrolysis technique and hydrothermal growth method, respectively. The thin film exhibits flake-like grains, while the nanorods exhibit well-defined hexagonal cross sections. Although both thin film and nanorods show similar optical band gaps of 3.26 eV, intense near-band-edge UV emissions at 380 nm, and broad and weak green emissions around 530 to 560 nm, the thin film exhibits higher visible transparency of 66 to 89% and faster ultraviolet (UV) emission lifetime of 30 ps. These results reveal important insights on selecting and designing ZnO-based optical sensors for future biological applications.

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Issue

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

Article ID

SPP-2018-PA-07

Section

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

Published

2018-05-24

How to Cite

[1]

EJCD Solibet, RC Veloz, MCM Angub, HAF Husay, MJF Empizo, K Kawano, T Shimizu, N Sarukura, AA Salvador, and AS Somintac, A comparative study of ZnO thin film and nanorod samples prepared by wet-chemical methods, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-PA-07 (2018). URL: https://proceedings.spp-online.org/article/view/SPP-2018-PA-07.