Microstructure and thermal stability of rf-plasma-nitridated α-(AlGa)2O3 grown by mist CVD.

Autor: Buma, A., Masuda, N., Araki, T., Nanishi, Y., Oda, M., Hitora, T.
Předmět:
Zdroj: Physica Status Solidi (B); Aug2017, Vol. 254 Issue 8, pn/a-N.PAG, 5p
Abstrakt: A new lattice-matching substrate material for the growth of AlGaN is proposed. This substrate is prepared by the rf-radical beam-based nitridation of α-(AlGa)2O3, which is grown by mist chemical vapor deposition (CVD). We consider the effect of the nitridation process using reflection high-energy electron diffraction (RHEED), transmission electron microscopy (TEM), scanning transmission electron microscopy-electron energy loss spectroscopy (STEM-EELS) and X-ray photoelectron spectroscopy (XPS). Surface of α-(AlGa)2O3 changed from corundum structure to wurtzite structure of AlGaN by nitridation using rf-radical beam was observed. In addition, we discuss the thermal stability of α-(AlGa)2O3. X-ray diffraction ω-2θ profile to characterize the phase transition was performed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index