Morphological characterization and space radiation effect simulations of epitaxially grown GaAs/GaSb heterostructures

Authors

  • Frederick C. Hila Department of Mining, Metallurgical and Materials Engineering, University of the Philippines Diliman and Philippine Nuclear Research Institute
  • Andrew C. Doño Department of Mining, Metallurgical and Materials Engineering, University of the Philippines Diliman
  • Salvador C. Buenviaje, Jr. Materials Science and Engineering Program, University of the Philippines Diliman
  • Elmer S. Estacio National Institute of Physics, University of the Philippines Diliman
  • Armando S. Somintac National Institute of Physics, University of the Philippines Diliman
  • Arnel A. Salvador National Institute of Physics, University of the Philippines Diliman
  • Cyril S. Salang Materials Science and Engineering Program, University of the Philippines Diliman

Abstract

We evaluate the morphology and simulate the effects of space radiation on epitaxially grown GaAs/ GaSb heterostructures. Scanning electron microscopy was used to study the semiconductor's surface microstructures. Monte Carlo-based SRIM/TRIM software was used to evaluate ion implantations, ionizations, and displacement vacancies produced by proton (H+ ion) irradiation at different impact angles. Results of SEM surface morphology showed formation of pits of threading dislocations. Meanwhile, space radiation’s simulated effects found favorable results for thinner films, which on average suffered less ion implantations, ionizations, and vacancies near heterojunctions. Thin-film GaAs/GaSb solar cell materials potentially have higher intrinsic resilience to space radiation damage.

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Published

2022-09-10

Issue

2022: Proceedings of the 40th Samahang Pisika ng Pilipinas Physics Conference

Section

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

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How to Cite

[1]
“Morphological characterization and space radiation effect simulations of epitaxially grown GaAs/GaSb heterostructures”, Proc. SPP, vol. 40, no. 1, p. SPP-2022-PA-01, Sep. 2022, Accessed: Mar. 24, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2022-PA-01