Optical characterization of epitaxially lifted-off gallium arsenide thin film on acetate

Authors

Anselmo Jose Ledesma National Institute of Physics, University of the Philippines Diliman
Anthony Montecillo Materials Science and Engineering Program, University of the Philippines Diliman
Gerald Angelo Catindig National Institute of Physics, University of the Philippines Diliman
Horace Andrew Husay National Institute of Physics, University of the Philippines Diliman
John Daniel Vasquez Materials Science and Engineering Program, University of the Philippines Diliman
Arnel Salvador 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

Abstract

A gallium arsenide (GaAs) thin film with a thickness of 780nm was epitaxially lifted-off (ELO) and transferred onto an acetate. Characterization using photoluminescence (PL) and Raman spectroscopies were then performed to the sample. The PL data indicates that the ELO GaAs/acetate sample has the same peak as that of the as-grown GaAs thin film. Additionally, there is a degradation of the optical quality of the film as seen by a broadening of its registered PL peak. On the other hand, fluence dependent Raman spectroscopy shows that there occurs a Raman shift at higher laser intensities for the as-grown sample, indicating a strain in the sample. However, further research is needed to confirm the exact cause of this phenomenon. Furthermore, no peak shifts were observed for the ELO GaAs/acetate sample at all laser intensities. We can conclude that the ELO technique is a capable and viable option to fabricate GaAs thin films on plastic.

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Issue

2019: Proceedings of the 37th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2019-PA-34

Section

Poster Session PA

Published

2019-05-23

How to Cite

[1]

AJ Ledesma, A Montecillo, GA Catindig, HA Husay, JD Vasquez, A Salvador, E Estacio, and A Somintac, Optical characterization of epitaxially lifted-off gallium arsenide thin film on acetate, Proceedings of the Samahang Pisika ng Pilipinas 37, SPP-2019-PA-34 (2019). URL: https://proceedings.spp-online.org/article/view/SPP-2019-PA-34.