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- 1. J. Appl. Phys. 101, 023516 (2007) , “Effect of screw dislocation density on optical properties in n-type wurtzite GaN”, Jeong Ho You and H. T. JohnsonThe effect of open-core screw dislocations on photoluminescence in n-doped wurtzite GaN epilayer is studied computationally and compared with experimental data. A k•p Hamiltonian calculation domain is set up to contain a dipole of open-core screw dislocations, and its size... (Read more)
- 2. Appl. Phys. Lett. 89, 112106 (2006) , “Effects of edge dislocations and intentional Si doping on the electron mobility of n-type GaN films”, D. G. Zhao, Hui Yang, J. J. Zhu, D. S. Jiang, Z. S. Liu, S. M. Zhang, Y. T. Wang, and J. W. LiangThe effects of dislocations and Si doping on the electrical properties of n-type GaN grown by metal organic chemical vapor deposition (MOCVD) are investigated. It is found that both electron mobility and carrier concentration are strongly influenced by edge dislocations. A moderate Si doping... (Read more)
- 3. Appl. Phys. Lett. 88, 252109 (2006) , “Origin of the n-type conductivity of InN: The role of positively charged dislocations”, L. F. J. Piper, T. D. Veal, C. F. McConville, Hai Lu, and W. J. SchaffAs-grown InN is known to exhibit high unintentional n-type conductivity. Hall measurements from a range of high-quality single-crystalline epitaxially grown InN films reveal a dramatic reduction in the electron density (from low 1019 to low 1017 cm3)... (Read more)
- 4. J. Appl. Phys. 100, 023709 (2006) , “Effect of threading dislocation density on Ni/n-GaN Schottky diode I-V characteristics”, A. R. Arehart, B. Moran, J. S. Speck, U. K. Mishra, S. P. DenBaars, and S. A. RingelThe impact of threading dislocation density on Ni/n-GaN Schottky barrier diode characteristics is investigated using forward biased current-voltage-temperature (I-V-T) and internal photoemission (IPE) measurements. Nominally, identical metal-organic chemical vapor... (Read more)
- 5. 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)
- 6. Phys. Rev. Lett. 92, 175504 (2004) , “Driving Force of Stacking-Fault Formation in SiC p–i–n Diodes”, S. Ha, M. Skowronski, J. J. Sumakeris, M. J. Paisley, M. K. DasThe driving force of stacking-fault expansion in SiC pin diodes was investigated using optical emission microscopy and transmission electron microscopy. The stacking-fault expansion and properties of the partial dislocations were inconsistent with any stress as the... (Read more)
- 7. Phys. Rev. B 64, 115308 (2001) , “Experimental Investigation of Band Structure Modification in Silicon Nanocrystals”, B. J. Pawlak, T. Gregorkiewicz, C. A. J. Ammerlaan, W. Takkenberg, F. D. Tichelaar, P. F. A. Alkemade.Experimental studies of size-related effects in silicon nanocrystals are reported. We present investigations carried out on nanocrystals prepared from single-crystal Si:P wafer by ball milling. The average final grain dimension varied depending on the way of preparation in the range between 70 and... (Read more)
- 8. Phys. Rev. B 32, 6571 (1985) , “Electrical Properties of Dislocations and Point Defects in Plastically Deformed Silicon”, P. Omling, E. R. Weber, L. Montelius, H. Alexander, J. Michel.Energy levels of defect states introduced by plastic deformation of n-type silicon have been studied by capacitance transient spectroscopy. From the observed properties of the defects, it is concluded that two different types of defects are produced. The first type is interpreted as point defects... (Read more)
- 9. phys. stat. sol. (a) 72, 701-713 (1982) , “On the Energy Spectrum of Dislocations in Silicon”, V. V. Kveder, Yu. A. Osipyan, W. Schrter, G. Zoth.Using deep level transient spectroscopy (DLTS) the defects introduced into silicon by plastic deformation are investigated with respect to their capture and emission characteristics. In agreement with what has been found by electron spin resonance (EPR), kind and density of the detected localized... (Read more)
- 10. Sov. Phys. JETP 31, 677-679 (1970) , “Electron Paramagnetic Resonance in Plastically Deformed Silicon”, V. A. Grazhulis, Yu. A. Osipyan.Lightly doped silicon crystals were investigated experimentally by the electron paramagnetic resonance method. Paramagnetic centers, generated during plastic deformation of these crystals, were detected. The concentration of these centers increased monotonically with increasing degree of deformation. The EPR spectrum of these centers was anisotropic and had a partially resolved fine structure. The centers werestrongly annealed only at temperature T ≧ 600ºC and the activation energy of the annealing process was ~2 eV. It was concluded that these centers were due to electrons of broken bonds in the cores of dislocations with edge components.
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