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

Authors

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

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

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.