Search for dissertations about: "pin diode"

Showing result 1 - 5 of 8 swedish dissertations containing the words pin diode.

2. 1. Ultrahigh-Voltage Silicon Carbide Device Performance, Requirements, and Limitations in High-Power Applications

   Author : Daniel Johannesson; Hans-Peter Nee; Staffan Norrga; Muhammad Nawaz; Alberto Castellazzi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 4H-SiC; Current Filamentation; Device Characterization; Dynamic Avalanche; JTE Structure; Junction Termination Extension Design; SiC BJT; SiC GTO Thyristor; SiC IGBT; SiC MOSFET; SiC PiN Diode; Silicon Carbide; TCAD Simulation; Wide bandgap device; Electrical Engineering; Elektro- och systemteknik;

   Abstract : The increased awareness of the on-going climate change accelerates the electric energy system transformation from fossil-fueled power sources towards systems with larger portions of renewable energy sources. Moreover, the grid infrastructure requires reinforcements to cope with increasing electrical energy demand. READ MORE

4. 2. InP/GaInP Nanowires for Tandem Junction Solar Cells : Growth, Processing, and Characterization

   Author : Xulu Zeng; Fasta tillståndets fysik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanowires; GaInP; InP; tandem; tunnel diode; solar cell;

   Abstract : Semiconductor nanowire solar cells have achieved comparable efficiency to their planar counterparts with substantial reduction of material consumption. Tandem geometry is a path towards even higher efficiency. However, extensive studies are needed to reach this goal. READ MORE

5. 3. Measurements of supersymmetry with the ATLAS experiment at the LHC

   Author : Jesper Söderqvist; KTH; []
   Keywords : ;

   Abstract : If supersymmetry exists at the electroweak scale, then it should be possible to discover it at CERN's next accelerator, the Large Hadron Collider (LHC). The phenomenology predicted by the supergravity inspired mimmal supersymmetric standard model (SUGRA) is examined in detail. READ MORE

6. 4. Surface guided radiotherapy

   Author : Malin Kügele; Lund Medicinsk strålningsfysik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surface guided radiotherapy; DIBH; SGRT; radiotherapy; patient positioning; intra-fraction motion; surface imaging; treatment planning; SGRT; surface guided radiotherapy; intra-fraction motion; DIBH; patient positioning; treatment planning; surface imaging;

   Abstract : Modern radiotherapy aims to treat the decease while minimizing the radiation dose to the adjacent normal tissue, to minimize acute and late effects of the treatment. The foremost technological approaches have been intensity modulated radiotherapy (IMRT) and intensity modulated proton therapy (IMPT) in combination with image guided radiotherapy (IGRT). READ MORE

7. 5. 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