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- 1. 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)
- 2. Nature 430, 1009 (2004) , “Ultrahigh-quality silicon carbide single crystals”, Daisuke Nakamura, Itaru Gunjishima, Satoshi Yamaguchi, Tadashi Ito, Atsuto Okamoto, Hiroyuki Kondo, Shoichi Onda, Kazumasa TakatoriSilicon carbide (SiC) has a range of useful physical, mechanical and electronic properties that make it a promising material for next-generation electronic devices1,2. Careful consideration of the thermal conditions3-6 in which SiC {0001} is grown has resulted in improvements in crystal diameter and quality: the quantity of macroscopic defects such as hollow core dislocations (micropipes)7-9, inclusions, small-angle boundaries and longrange lattice warp has been reduced10,11. But some macroscopic defects (about 1–10 cm-2) and a large density of elementary dislocations (,104 cm-2), such as edge, basal plane and screw dislocations, remain within the crystal, and have so far prevented the realization of high-efficiency, reliable electronic devices in SiC (refs 12–16). Here we report a method, inspired by the dislocation structure of SiC grown perpendicular to the c-axis (a-face growth)17, to reduce the number of dislocations in SiC single crystals by two to three orders of magnitude, rendering them virtually dislocation-free. These substrates will promote the development of high-power SiC devices and reduce energy losses of the resulting electrical systems. (Read more)
- 3. Appl. Phys. Lett. 81, 1128-1130 (2002) , “Electron spin resonance study of interface defects in atomic layer deposited hafnium oxide on Si”, A. Y. Kang, P. M. Lenahan, J. F. Conley Jr., R. SolankiWe report electron spin resonance (ESR) observation of interface defects at the HfO2/(111)Si boundary for HfO2 films deposited via atomic layer chemical vapor deposition using Hf(NO3)4 as a precursor. We observe several signals, dominated by one due to a... (Read more)
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Updated at 2010-07-20 16:50:39
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