کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1791139 | 1524460 | 2013 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Quasi-equilibrium crystal shapes and kinetic Wulff plots for gallium nitride grown by hydride vapor phase epitaxy Quasi-equilibrium crystal shapes and kinetic Wulff plots for gallium nitride grown by hydride vapor phase epitaxy](/preview/png/1791139.png)
In this paper we demonstrate work on developing the kinetic Wulff plots and quasi-equilibrium crystal shapes of GaN by hydride vapor phase epitaxy to understand the stable polar, semipolar, and nonpolar planes that emerge naturally from the GaN crystal. High quality bulk m-plane GaN substrates were masked with circular openings to perform selective area growth studies. Growths were performed by hydride vapor phase epitaxy over a range of temperatures, pressures and carrier gases. The quasi-equilibrium crystal shapes were shown to have clear m -plane {11¯00} facets and a sharp and flat (0001¯) N-face or c− face. The (0001) Ga-face or c+ face became faceted with {101¯1} planes emerging with reduced pressures and temperatures. Based on the stable facets, kinetic Wulff plots were constructed.
► Demonstrated SAG of GaN on high quality bulk GaN substrates by HVPE.
► Islands from these growths reveal the QECS of GaN under varying growth ranges.
► QECS of GaN is shown to have clear m -plane facets and flat N-face.
► Ga-face became faceted with {101¯1} planes with reduced pressures and temperatures.
► From this information the kinetic Wulff plots of GaN were constructed.
Journal: Journal of Crystal Growth - Volume 369, 15 April 2013, Pages 14–20