Abstract
This paper reports an alternative method for the growth of GaN epitaxial layer on (0001) Al2O3 substrate by hot-wall vapor phase epitaxy technique. Tris (N,N-dimethyldithiocarbamato)-gallium (III), Ga(mDTC)3 was introduced as a precursor material for the seed layer formation in the growth of GaN. Optimal growth conditions with seed layers formed by the Ga(mDTC)3 concentration of 0.047 mol/L were identified: Growth temperature was found to be 850 °C, and optimal distance between the reactant outlet and substrate was determined to be 12.5 cm. Characterization results showed that this growth method produce high-crystallinity GaN epitaxial layers at a relatively lower growth temperature compared to the existing growth techniques and simplify the growth process.
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Kim, D.H., Farva, U., Jung, W.S. et al. Epitaxial growth of GaN on (0001) Al2O3 via solution-cast seed layer formation process using Ga(mDTC)3 . Korean J. Chem. Eng. 25, 1184–1189 (2008). https://doi.org/10.1007/s11814-008-0195-y
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DOI: https://doi.org/10.1007/s11814-008-0195-y