Investigation on the effect of substrate heat treatment on the optical properties of MBE-grown GaAs on silicon substrates

Authors

Gerald Angelo Catindig ⋅ PH National Institute of Physics, University of the Philippines Diliman
Rhenish Simon ⋅ PH National Institute of Physics, University of the Philippines Diliman
Karl Cedric Gonzales ⋅ PH National Institute of Physics, University of the Philippines Diliman
Cyril Sadia ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elizabeth Ann Prieto ⋅ PH National Institute of Physics, University of the Philippines Diliman
John Daniel Vasquez ⋅ PH National Institute of Physics, University of the Philippines Diliman
Sheryl Ann Vizcara ⋅ PH National Institute of Physics, University of the Philippines Diliman
Crizia Alcantara ⋅ PH National Institute of Physics, University of the Philippines Diliman
Horace Andrew Husay ⋅ 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

GaAs films on Si substrates were grown via Molecular Beam Epitaxy (MBE). The effect of pre-growth heat treatment of the Si substrate on the grown GaAs layer was investigated. Photoluminescence (PL) at T = 11K shows that the GaAs/Si band edge emission was redshifted by 23 meV as compared to as-grown GaAs indicating that the films are strained. The PL intensity of the GaAs/Si sample substrate treated at 720°C showed a remarkably higher PL intensity compared to the sample substrate treated at 610°C, indicating that heat treatment at higher temperature yields a GaAs thin film with better optical qualities.

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Issue

2015: Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2015-PB-17

Section

Poster Session PB

Published

2015-06-03

How to Cite

[1]

GA Catindig, R Simon, KC Gonzales, C Sadia, EA Prieto, JD Vasquez, SA Vizcara, C Alcantara, HA Husay, E Estacio, A Somintac, and A Salvador, Investigation on the effect of substrate heat treatment on the optical properties of MBE-grown GaAs on silicon substrates, Proceedings of the Samahang Pisika ng Pilipinas 33, SPP-2015-PB-17 (2015). URL: https://proceedings.spp-online.org/article/view/1223.