摘要:
The present invention relates to a gallium nitride/sapphire thin film, wherein a curvature radius thereof is positioned on the right side of a curve plotted from the following functional formula (I): Y=Y0+A·e−(x1−1)/T1+B·(1−e−x2/T2) (I) wherein Y is the curvature radius (m) of a gallium nitride/sapphire thin film, x1 is the thickness (μm) of a gallium nitride layer, x2 is the thickness (mm) of a sapphire substrate, Y0 is −107±2.5, A is 24.13±0.50, B is 141±4.5, T1 is 0.56±0.04, and T2 is 0.265±0.5.
摘要:
A nitride semiconductor template having nano-voids at an interface between a substrate having one embossed surface and a nitride semiconductor layer can be rapidly prepared by hydride vapor phase epitaxy (HVPE) growth of the nitride semiconductor layer on the embossed surface of the substrate.