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

Authors

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