Understanding non-polar GaN growth through kinetic Wulff plots.
- Yale University, New Haven, CT
In this paper we provide explanations to the complex growth phenomena of GaN heteroepitaxy on nonpolar orientations using the concept of kinetic Wulff plots (or v-plots). Quantitative mapping of kinetic Wulff plots in polar, semipolar, and nonpolar angles are achieved using a differential measurement technique from selective area growth. An accurate knowledge of the topography of kinetic Wulff plots serves as an important stepping stone toward model-based control of nonpolar GaN growth. Examples are illustrated to correlate growth dynamics based on the kinetic Wulff plots with commonly observed features, including anisotropic nucleation islands, highly striated surfaces, and pentagonal or triangular pits.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 951550
- Report Number(s):
- SAND2008-6629J
- Journal Information:
- Proposed for publication in the Journal of Applied Physics., Journal Name: Proposed for publication in the Journal of Applied Physics.
- Country of Publication:
- United States
- Language:
- English
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