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Scanning Capacitance Microscopy
germană
258 b
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In this PhD-thesis, Scanning Capacitance Microscopy§(SCM) and §Scanning Capacitance Spectroscopy (SCS) was applied§to investigate §various silicon samples. SCM is used to investigate§the electrical §behaviour of samples with a lateral resolution below§100 nm. The §work is divided into 3 major experimental parts: (1)§the properties of §metal organic chemical vapour deposited zirconium§dioxide as §dielectric material for SCM was explored. Usage of§zirconium §dioxide leads to reduced leakage currents and§improved signal §quality. (2) focussed ion beam induced damage in§silicon was §investigated with SCM. The beam shape and the range§of ion §damage inside the sample was investigated. The SCM§data were §compared with transmission electron microscopy data.§(3) a setup §for quantitative Scanning Capacitance Spectroscopy§with an external §capacitance bridge connected to an atomic force§microscope was §designed. This setup is sensitive enough to resolve§the energetic §distribution of interface trapped charges and to§quantitatively §measure the local oxide charge density distribution§of zirconium §dioxide layers.
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germană
