Search for dissertations about: "Schottky layer"
Showing result 6 - 10 of 37 swedish dissertations containing the words Schottky layer.
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6. Modelling and Characterisation of Terahertz Planar Schottky Diodes
Abstract : This thesis deals with the modelling and characterisation of THz planar Schottky diodes, focusing on analyses of geometry-dependent electrical parasitics and the thermal management of the diode chip. Moving towards higher operating frequencies, the diode performance degrades due to high frequency losses, parasitic couplings and self-heating effects. READ MORE
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7. Silicon Carbide Microwave Devices
Abstract : This work deals with silicon carbide (SiC) microwave devices. It treats two devices; the Schottky diode and the metal semiconductor field effect transistor (MESFET). Different MESFET materials, fabrication processes, theoretical models for physical simulation, and device models are presented. READ MORE
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8. Processing and characterization of silicon carbide (6H-SiC and 4H-SiC) contacts for high power and high temperature device applications
Abstract : Silicon carbide is a promising wide bandgap semiconductormaterial for high-temperature, high-power, and high-frequencydevice applications. However, there are still a number offactors that are limiting the device performance. READ MORE
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9. Modelling of cathode-plasma interaction in short high-intensity electric arc : Application to Gas Tungsten Arc Welding
Abstract : In arc welding the quality of the weld is strongly influenced by the thermal history of the workpiece which is itself governed by the electric arc heat source. The models for predicting weld properties thus need a good evaluation of the distribution of the heat input from thearc to the workpiece. READ MORE
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10. Silicon carbide field-effect devices studied as gas sensors for exhaust gas monitoring
Abstract : Metal-insulator-silicon carbide (MIS) structures have been studied as gas sensors. We have investigated how the sensors detect gases, how fast they do that, and how they could be used for exhaust gas monitoring.We have prepared simple field-effect devices, MIS-capacitors and Schottky diodes, on silicon carbide with platinum gates. READ MORE