Du Danxu, Srolovitz David J, Coltrin Michael E, Mitchell Christine C
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08540, USA.
Phys Rev Lett. 2005 Oct 7;95(15):155503. doi: 10.1103/PhysRevLett.95.155503. Epub 2005 Oct 5.
We develop a new, combined experimental and theoretical approach to make reliable predictions for the limiting case of surface reaction kinetics controlled growth. We solve the inverse problem of determining the growth velocity from observations of the evolution of the morphology of GaN islands grown by metalorganic chemical vapor deposition and make use of crystal symmetry and established theorems. We are able to predict the growth for both convex and concave surfaces, with faceted and curved features. We also give a general guideline for deducing growth velocities from experimental observations.
我们开发了一种新的、结合实验和理论的方法,以便对表面反应动力学控制生长的极限情况做出可靠预测。我们通过观察金属有机化学气相沉积生长的氮化镓岛的形态演变来解决确定生长速度的反问题,并利用晶体对称性和既定定理。我们能够预测具有刻面和弯曲特征的凸面和凹面的生长情况。我们还给出了从实验观察中推导生长速度的一般指导原则。