Search for dissertations about: "current-voltage"

Showing result 1 - 5 of 96 swedish dissertations containing the word current-voltage.

  2. 1. Processing and characterization of silicon carbide (6H-SiC and 4H-SiC) contacts for high power and high temperature device applications

    Author : Sang Kwon Lee; KTH; []
    Keywords : Silicon carbide; ohmic and schottky contacts; co-evaporation; current-voltage; powre devices; nano-particles; Schottky barrier height lowering; TLM structures;

    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

  4. 2. Electrical contacts, Ohmic and Schottky, to 4H-Silicon Carbide for device applications

    Author : Sang-Kwon Lee; KTH; []
    Keywords : silicon carbice; Ohmic; Schottky contacts; co-evaporation; current-voltage; capacitance-voltage measurement; power device; 4H-SiC; TLM;

    Abstract : .... READ MORE

  5. 3. Processing and characterization of GaN/SiC heterojunctions and SiC bipolar transistors

    Author : Erik Danielsson; KTH; []
    Keywords : silicon carbide; gallium nitride; device simulation; bipolar junction transistor; heterojunction; heterojunction bipolar transistor; current-voltage measurement; capacitance-voltage measurement; self-heating;

    Abstract : Silicon Carbide (SiC) and Gallium Nitride (GaN) are bothwide bandgap semiconductors that have been suggested for highpower, high voltage, and high temperature applications. Themost investigated SiC devices so far are the Schottky diode,PiN diode and the field effect transistor. READ MORE

  6. 4. Chloride Homeostasis in Central Neurons

    Author : Tushar Yelhekar; Staffan Johansson; Michael Druzin; Merab Kokaia; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chloride concentration; current-voltage relation; interpolation; voltage ramp; reversal potential; [Cl–]i recovery; KCC2; extracellular matrix; GABAA receptor; chloride leak conductance; neurosteroid; fysiologi; Physiology;

    Abstract : The overall aim of the present thesis is to clarify the control of intracellular chloride homeostasis in central neurons, because of the critical role of chloride ions (Cl–) for neuronal function. Normal function of the central nervous system (CNS) depends on a delicate balance between neuronal excitation and inhibition. READ MORE

  7. 5. On the Zero and Low Field Vortex Dynamics : An Experimental Study of Type-II Superconductors

    Author : Örjan Festin; Peter Svedlindh; Piero Martinoli; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; high temperature superconductors; thermal fluctuations; YBCO; MgB2; anisotropic superconductors; vortex dynamics; Kosterlitz-Thouless transition; current voltage characteristics; complex conductivity; Flux noise; Teknisk fysik; Engineering physics; Teknisk fysik;

    Abstract : Dynamic properties of type-II superconductors have been experimentally studied in zero and low magnetic fields using SQUID magnetometry and I–V measurements.In zero magnetic field close to the critical temperature, the physical properties of type-II superconductors are dominated by spontaneously created vortices. READ MORE