Journal
MATERIALS LETTERS
Volume 350, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2023.134801
Keywords
Gallium nitride; Atomic layer deposition; Surface; Metallic substrate
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Gallium nitride (GaN) thin films were grown on stainless steel substrate with Al2O3 buffer using plasma-enhanced atomic layer deposition at low temperature (& LE;290 & DEG;C). The GaN films exhibited a polycrystalline structure with a strong (002) preferential orientation. The refractive index of the films was determined as 2.30 at 633 nm using Spectroscopic Ellipsometry. This study provides a new approach for achieving high-quality GaN on metal substrates, which is promising for future applications of GaN-based devices on metal substrates.
Gallium nitride (GaN) thin films were grown on stainless steel substrate with Al2O3 buffer by plasma-enhanced atomic layer deposition. The GaN and Al2O3 are all deposited at low temperature (& LE;290 & DEG;C). The morphology, structural and optical properties of the GaN were investigated. The grazing incidence X-ray diffraction result manifests the as-deposited GaN is polycrystalline with a strong (002) preferential orientation. Through Spec-troscopic Ellipsometry, the refractive index of the films is determined as 2.30 at 633 nm. The results indicate the high-quality GaN was grown on stainless steel. This study provides a new approach to achieve high-quality GaN grown on metal substrates, which is quite promising for future applications of GaN-based devices on metal substrates.
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