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- W2563622951 abstract "Abstract AlN thin films, grown on (0001) sapphire substrates by molecular beam epitaxy (MBE), were annealed at high temperature (up to 1650 °C) in flowing N 2 . X-ray diffraction (XRD) studies, combined with Williamson-Hall and Srikant plots, have shown that annealing leads to a strong reduction of both edge and mixed threading dislocation densities, as confirmed by transmission electron microscopy (TEM) images, up to 75%. Moreover, it is found that annealing at high temperatures allows the relaxation of the tensile strain in the AlN film due to the growth process. In addition, the morphological properties of the films were determined by atomic force microscopy (AFM) and show that the annealing conditions have a strong impact on the surface morphology and roughness. Finally, an annealing at 1550 °C for 20 min appears as an ideal tradeoff to enhance the structural properties while preserving the initial AlN surface morphology." @default.
- W2563622951 created "2017-01-06" @default.
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- W2563622951 date "2017-03-01" @default.
- W2563622951 modified "2023-09-29" @default.
- W2563622951 title "Dislocation densities reduction in MBE-grown AlN thin films by high-temperature annealing" @default.
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- W2563622951 doi "https://doi.org/10.1016/j.jcrysgro.2016.12.089" @default.
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