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- 1. Phys. Rev. B 75, 085301 (2007) , “Electron backscatter diffraction and electron channeling contrast imaging of tilt and dislocations in nitride thin films”, C. Trager-Cowan, F. Sweeney, P. W. Trimby, A. P. Day, A. Gholinia, N.-H. Schmidt, P. J. Parbrook, A. J. Wilkinson, and I. M. WatsonIn this paper we describe the use of electron backscatter diffraction (EBSD) mapping and electron channeling contrast imaging—in the scanning electron microscope—to study tilt, atomic steps and dislocations in epitaxial GaN thin films. We show results from a series of GaN thin films of... (Read more)
- 2. J. Appl. Phys. 99, 011101 (2006) , “Degradation of hexagonal silicon-carbide-based bipolar devices”, M. Skowronski and S. HaOnly a few years ago, an account of degradation of silicon carbide high-voltage p-i-n diodes was presented at the European Conference on Silicon Carbide and Related Compounds (Kloster Banz, Germany, 2000). This report was followed by the intense effort of multiple groups... (Read more)
- 3. J. Appl. Phys. 92, 889-894 (2002) , “Ramification of micropipes in SiC crystals”, M. Yu. Gutkin, A. G. Sheinerman, T. S. Argunova, J. H. Je, H. S. Kang, Y. Hwu, W.-L. TsaiThe ramification of micropipes is observed using scanning electron microscopy, optical microscopy, and synchrotron x-ray radiography. The conditions for the ramification of dislocated micropipes are determined theoretically within a model when the angles between dislocation lines are small. It is... (Read more)
- 4. J. Appl. Phys. 89, 4625-4630 (2001) , “Hexagonal voids and the formation of micropipes during SiC sublimation growth”, Thomas A. Kuhr, Edward K. Sanchez, Marek Skowronski, William M. Vetter, Michael DudleyHexagonal voids observed in sublimation grown SiC boules were examined using optical microscopy, atomic force microscopy (AFM), scanning electron microscopy, KOH etching, and synchrotron white-beam x-ray topography. Voids formed at imperfections in the attachment layer between the seed and crucible... (Read more)
- 5. J. Appl. Phys. 88, 1407 (2000) , “Structural improvement in sublimation epitaxy of 4H–SiC”, M. Syväjärvi, R. Yakimova, H. Jacobsson, and E. JanzénThe sublimation epitaxy growth process has been studied. The structural quality of the grown layers improves compared with the substrate mainly due to a diminished domain structure misorientation. Optical microscopy shows that the as-grown surfaces are free of typical defects appearing in silicon... (Read more)
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