Search for dissertations about: "semiconductor PHYSICS THESIS"

Showing result 1 - 5 of 272 swedish dissertations containing the words semiconductor PHYSICS THESIS.

  1. 1. Fabrication and Characterization of Composite TiO2/Carbon Nanofilms with Enhanced Photocatalytic Activity

    University dissertation from Chalmers University of Technology

    Author : Raja Sellappan; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Kemisk fysik; Chemical physics; Halvledarfysik; Semiconductor physics; Ytor och mellanytor; Surfaces and interfaces; Optik; Optics; Photocatalysis; TiO2; carbon; photoluminescence; photodegradation; recombination.;

    Abstract : The work presented in this thesis is dedicated to fabrication and characterization of an efficient thin film photocatalyst for environmental cleaning and solar fuel applications. Because of its simplicity and reproducible fabrication, the chosen combination of nanometer thin titania and carbon films serves also as a model system for a wider class of photoactive materials. READ MORE

  2. 2. Effects of the Spin-Orbit Interaction on Transport and Optical Properties of III-V Semiconductor Quantum Wells

    University dissertation from Division of Solid State Theory, Department of Physics, University of Lund, Sölvegatan 14A, SE-223 62 Lund

    Author : Vladimir Froltsov; Lunds universitet.; Lund University.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; spin-orbit interaction; quantum well; III-V; Raman scattering; magnetoresistance; weak localization; spin distribution; magnetic field; Fysik; Physics; Fysicumarkivet A:2000:Froltsov; Halvledarfysik; Semiconductory physics; semiconductor;

    Abstract : Effects of the intrinsic electron spin-orbit interaction on transport and optical properties of III-V semiconductor quantum wells have been studied theoretically. It is shown that due to crystal anisotropy of this interaction, the weak localization magnetoresistance in a magnetic field parallel to interfaces is very sensitive to the epitaxy growth direction and also to the orientation of the magnetic field with respect to the crystal axes. READ MORE

  3. 3. Electronic Structure of Some Zincblende Semiconductor Surfaces

    University dissertation from Chalmers University of Technology

    Author : Yousef Omar Khazmi; Chalmers tekniska högskola.; Chalmers University of Technology.; [1997]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; semiconductor; surface; photoemission; tight-binding; Green s function; electronic structure; InP; GaAs; CdTe; superlattice; valence band; core level; adsorbates;

    Abstract : The main aim of this thesis is to study and understand the surface electronic structure of compound semiconductors (ex. GaAs, InP, ..etc. READ MORE

  4. 4. Atomic and Electronic Structure of III-V Semiconductor Surfaces

    University dissertation from Chalmers University of Technology

    Author : Örjan Olsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1996]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; semiconductor; surface; reconstruction; valence band; core level; photoelectron; InAs; InSb; GaAs; scanning tunneling microscopy;

    Abstract : The atomic and electronic structure of clean and Cs-perturbed III-V semiconductors was studied by angle-resolved photoelectron spectroscopy (ARPES), surface core level spectroscopy (SCLS), and scanning tunneling microscopy (STM). The work can be divided into three parts, dealing with low-index sur-faces, high-index surfaces, and special features of InAs. READ MORE

  5. 5. Photoelectron Spectroscopy Studies of III-V Semiconductor Systems

    University dissertation from Chalmers University of Technology

    Author : Henric Åsklund; Chalmers tekniska högskola.; Chalmers University of Technology.; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; photoelectron spectroscopy; III-V semiconductor; surface; thin films; interface; diluted magnetic semiconductor; valence-band; core-level; core-exciton; MBE; MEE; low temperature MBE; InP 110 :As; InAs; GaAs; GaAs 111 A; InAs 111 A; GaMnAs;

    Abstract : Photoelectron spectroscopy has been used as a main tool to study a number of III-V semiconductor surfaces. This thesis includes studies of a surface reaction, As/InP(110), thin heteroepitaxial layers, InAs on GaAs(111)A and GaAs on AlAs(100), and a diluted magnetic semiconductor, Ga1-xMnxAs. READ MORE