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

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.

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Issue

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

Article ID

SPP-2017-PA-03

Section

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

Published

2017-06-07

How to Cite

[1]

AS Escaro, EJC Solibet, R Veloz, NI Cabello, M Bacaoco, L Lopez, MA Faustino, A De Los Reyes, A Cafe, E Estacio, A Somintac, and A Salvador, Enhancement of terahertz emission of semi-insulating gallium arsenide via zinc oxide thin film surface modification, Proceedings of the Samahang Pisika ng Pilipinas 35, SPP-2017-PA-03 (2017). URL: https://proceedings.spp-online.org/article/view/244.