Abstract
Plasma-assisted molecular beam epitaxy has been used to grow the highest quality β-Ga2O3 thin films and has shown potential to realize various efficient device structures. Growth of β-Ga2O3 is defined by the suboxide desorption that limits growth rates at high temperatures and Ga fluxes. Growth in various orientations has been demonstrated with the (010) b-plane in particular showing promise for homoepitaxy due to high realized growth rates and materials quality. N-type doping with Sn, Ge, and Si has allowed for device structures that utilize electron conduction in this materials system. Heterostructures with β-(AlxGa1-x)2O3 have been used for modulation doped field effect transistors; however, thermodynamic limitations of maximum achievable Al content have limited device performance. Expanding the growth regime through metal-oxide catalyzed epitaxy using In could help improve heterostructure growth for future devices.
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Mauze, A., Speck, J. (2020). Plasma-Assisted Molecular Beam Epitaxy 1. In: Higashiwaki, M., Fujita, S. (eds) Gallium Oxide. Springer Series in Materials Science, vol 293. Springer, Cham. https://doi.org/10.1007/978-3-030-37153-1_5
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