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2 results on '"Tsung-Shine Ko"'

1. Morphological and microstructural evolution in the two-step growth of nonpolar a-plane GaN on r-plane sapphire

Author

Qian Sun, Bo Hyun Kong, Yerino, Christopher D., Tsung-Shine Ko, Leung, Benjamin, Hyung Koun Cho, and Jung Han

Subjects
Gallium compounds -- Electric properties, Gallium compounds -- Structure, Microstructure -- Analysis, Sapphires -- Electric properties, Sapphires -- Structure, Transmission electron microscopes -- Usage, Physics
Abstract

The evolution of surface morphology and mcirosctructure of nonpolar a-plane GaN (a-GaN) through controlled growth interruptions is studied. The correlation between the morphological evolution and the microstructure development has helped in proposing a model that has explained the possible mechanisms for the great reduction in defect density during the two-step growth process.

Published
2009

2. Understanding nonpolar GaN growth through kinetic Wulff plots

Author

Qian Sun, Yerino, Christopher D., Tsung Shine Ko, Yong Suk Cho, In-Hwan Lee, Jung Han, and Coltrin, Michael E.

Subjects
Anisotropy -- Usage, Epitaxy -- Analysis, Gallium compounds -- Electric properties, Gallium compounds -- Structure, Physics
Abstract

The complex growth phenomenon of GaN heteroepitaxy on nonpolar orientations is explained by using the concept of kinetic Wulff plots (v-plots). 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.

Published
2008

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