Enhancement of terahertz emission of semi-insulating gallium arsenide via zinc oxide thin film surface modification

Authors

  • Archel Susvilla Escaro National Institute of Physics, University of the Philippines Diliman
  • Erick John Carlo Solibet National Institute of Physics, University of the Philippines Diliman
  • Raymund Veloz National Institute of Physics, University of the Philippines Diliman
  • Neil Irvin Cabello National Institute of Physics, University of the Philippines Diliman
  • Miguel Bacaoco National Institute of Physics, University of the Philippines Diliman
  • Lorenzo Lopez, Jr. National Institute of Physics, University of the Philippines Diliman
  • Maria Angela Faustino National Institute of Physics, University of the Philippines Diliman
  • Alexander De Los Reyes National Institute of Physics, University of the Philippines Diliman
  • Arven Cafe National Institute of Physics, University of the Philippines Diliman
  • Elmer Estacio National Institute of Physics, University of the Philippines Diliman
  • Armando Somintac National Institute of Physics, University of the Philippines Diliman
  • Arnel Salvador National Institute of Physics, University of the Philippines Diliman

Keywords:

Antireflection coatings 42.79.Wc, Ultrafast spectroscopy 78.47.J, Ultrafast processes 42.65.Re, Spray coating techniques 81.15.Rs

Abstract

This study reports on the Terahertz (THz) emission of semi-insulating Gallium Arsenide (GaAs) substrate coated with Zinc Oxide (ZnO) thin film via spray pyrolysis. Using a reflection-mode THZ time domain spectroscopy (TDS), it was shown  that enhancement in the THZ emission was observed with ZnO-coated SI-GaAs compared to the bare substrate. The enhancement is partly attributed to the decreased reflectivity due to the  modification of the surface by addition of a ZnO thin film on the GaAs substrate which translates to higher photon absorbance of the material. 

Proceedings SPP 2017 Cover

Downloads

Published

2017-06-07

Issue

2017: Proceedings of the 35th Samahang Pisika ng Pilipinas Physics Conference

Section

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

License

By submitting their manuscript to the Samahang Pisika ng Pilipinas (SPP) for consideration, the Authors warrant that their work is original, does not infringe on existing copyrights, and is not under active consideration for publication elsewhere.
Upon acceptance of their manuscript, the Authors further agree to grant SPP the non-exclusive, worldwide, and royalty-free rights to record, edit, copy, reproduce, publish, distribute, and use all or part of the manuscript for any purpose, in any media now existing or developed in the future, either individually or as part of a collection.
All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“Enhancement of terahertz emission of semi-insulating gallium arsenide via zinc oxide thin film surface modification”, Proc. SPP, vol. 35, no. 1, p. SPP-2017-PA-03, Jun. 2017, Accessed: Mar. 26, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/244