Essays about: "6H-SiC"

Found 5 essays containing the word 6H-SiC.

  1. 1. Graphene growth on SiC under Arambient and H-intercalation

    University essay from KTH/Rymd- och plasmafysik

    Author : Kevin Mead; [2015]
    Keywords : ;

    Abstract : We grow epitaxial graphene on 6H-SiC (0001) substrates in Ar background and intercalatehydrogen to reform the carbon bu↵er layer into single and multilayered graphene. We willanalyze the graphene using a combination of techniques including optical microscopy,micro-Raman spectroscopy, Atomic Force Microscopy (AFM), and reflectance mappingand contactless measurements of sheet carrier density and charge carrier mobility. READ MORE

  3. 2. Characterization of epitaxial graphene grown on silicon carbide

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik

    Author : Anton Jansson; [2014]
    Keywords : Graphene; epitaxial graphene; silicon carbide; SiC; 4H-SiC; 6H-SiC; sublimation; graphene manufacturing; AFM; atomic force microscopy; tapping mode; surface study; stepheight; charactarization;

    Abstract : In this thesis work several manufacturing methods for graphene is discussed followed by an indepth study of graphene grown by a high temperature sublimation method (sublimation of siliconcarbide). The graphene surfaces studied have been grown by Graphensic AB, both graphenegrown on the Si-face and the C-face of the silicon carbide were studied. READ MORE

  4. 3. Fabrication and Characterization of Micro and Nano Scale SiC UV Photodetectors

    University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Author : Ludwig Östlund; [2011]
    Keywords : ;

    Abstract : The focus of this master thesis work is on the fabrication of micro- and nano-scale metalsemiconductor-metal silicon carbide (SiC) UV photodetectors and subsequent electrical and optical evaluation of the fabricated devices. The UV photodetectors have significant potential to address the needs of many applications such as detection of corona discharge and flames, industrial machine viewing, and bacteria in water or paper mills. READ MORE

  5. 4. Studies of Light Emission from N-B doped 6H-SiC

    University essay from Halvledarmaterial

    Author : Petra Reimers; [2010]
    Keywords : Light; emitted; excitation; wavelength; doped; SiC; 6H-SiC; irradiance; LED; monochromator; UV;

    Abstract : The purpose of this thesis work was to find a way to measure basic light emission properties of nitrogen-and-boron-doped 6H-SiC, which are fabricated with a growth method developed at Linköping University. The research is in its initial phase and the light properties as well as optical measurement techniques are important. READ MORE

  6. 5. Investigation of the Symmetries of the Phonons in 4H and 6H-SiC by Infrared Absorption and Raman Spectroscopy

    University essay from Institutionen för fysik, kemi och biologi

    Author : Hina Ashraf; [2005]
    Keywords : Raman spectroscopy; Silicon Carbide SiC ; IR absorption Spectroscopy; Phonon displacements; Lattice dynamic model LDM ; 4h-SiC; 6H-SiC; Polar modes in SiC;

    Abstract : The goal of the project work has been to study the symmetry of the phonons in 4H and 6H-SiC for different measuring geometries by using two experimental techniques, Raman and infrared absorption (IR) spectroscopy, and a theoretical model. The Raman spectra were measured in different scattering configurations in order to obtain experimental data for detailed investigation of the phonon symmetries. READ MORE