Kinetic model for molecular beam epitaxy growth of InAsSbBi alloys

نویسندگان

چکیده

The growth of Bi-containing III-V alloys requires careful control over temperature and group-V fluxes due to the low equilibrium solubility Bi its tendency surface segregate into Bi-rich droplet features. A model for molecular beam epitaxy based on kinetics atomic desorption, incorporation, accumulation, formation is applied bismide alloy InAsSbBi grown GaSb substrates. steady-state solution derived Bi, Sb, As mole fractions layer coverages fluxes. nonlinear least-squares algorithm used fit parameters experimentally measured in bulk quantum well samples at 400 °C 420 °C. fraction ranges from 0.12% 1.86% among 17 examined. results indicate that as increases, rate incorporation decreases self-desorption increases. strong interaction observed between plays a role desorption excess surface, thus reducing likelihood when an flux present. Significantly, predicts limited 1.43% 0.30% lattice-matched

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ژورنال

عنوان ژورنال: Journal of Applied Physics

سال: 2021

ISSN: ['1089-7550', '0021-8979', '1520-8850']

DOI: https://doi.org/10.1063/5.0035193