Sökning: "Molecular Beam Epitaxy"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Molecular Beam Epitaxy.

  1. 1. Investigation of magnetic order in nickel-5d transition metal systems

    Master-uppsats, Uppsala universitet/Molekyl- och kondenserade materiens fysik

    Författare :Konstantinos Papadopoulos; [2019]
    Nyckelord :muSR; muons; skyrmions; magnetism; transition; spin; rotation; relaxation; resonance; thin; films; transition; metals; MBE; sputtering; XRR; reflectivity; molecular; beam; epitaxy; x; ray; TRIUMF; double; perovskite; longitudinal; transverse; nickel; Ni; asymmetry; positron; depolarization; chiral; lattice; helical; DM; interaction;

    Sammanfattning : Double perovskite materials exhibit alterations in magnetic order through manipulation oftheir crystal structure. Certain ultra thin metallic bilayers can create an exotic magnetic stateof confined spin textures called skyrmions. In both cases, new atomic arrangements leadto new electrical and magnetic properties. LÄS MER

  3. 2. Correlated Structure-Property Investigation of Ultrathin InAs Nanowires

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Linnea Suomenniemi; [2019]
    Nyckelord :Nanowires; InAs; epitaxy; MBE; Photo luminescence; Physics and Astronomy;

    Sammanfattning : III-V semiconductors are a profound part of the optoelectronics industry and new developments in alloy compositions and architectures are constantly emerging. Lowdimensional semiconductors, such as nanowires (NWs) have shown to have improved characteristics in certain areas such as enhanced light absorption and can furthermore be integrated on Silicon (Si) plattforms and are thus predicted to be a key component in future nanoelectronic and nanophotonic applications and devices. LÄS MER

  4. 3. Processing Technology for Si Based Tandem Solar Cells

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Nedim Aydinci; [2014]
    Nyckelord :;

    Sammanfattning : This project focuses on the investigation of Silicon based Tandem solar cell fabricated by using the Hydride Vapor Phase Epitaxy (HVPE). In the state-of-the-art multi-junction solar cell manufacturing epitaxial technologies are used for sub-cell formation, such as MOVPE (Metal Organic Vapour Phase Epitaxy) [1] or MBE (Molecular Beam Epitaxy) [2]. LÄS MER

  5. 4. STM Study of PTCDA on Pb/Si(111) 1×1

    Uppsats för yrkesexamina på avancerad nivå, Fakulteten för teknik- och naturvetenskap

    Författare :David Juteräng; [2012]
    Nyckelord :PTCDA; STM; Silicon; Lead;

    Sammanfattning : The interaction and orbital energy levels of 3,4,9,10-perylene-tetracarboxylic dianhydride (PTCDA) molecules on a Pb/Si(111) 1x1 substrate have been investigated. A Si(111) sample was annealed to form the 7x7 configuration. 1.5 monolayer of Pb was evaporated onto the surface, which was then annealed. LÄS MER

  7. 5. Characterization of InSb quantum dots in InAs matrix grown by molecular beam epitaxy for infrared photodetectors

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Laiq§ Hussain; [2011]
    Nyckelord :;

    Sammanfattning : Materials for the generation and detection of long wavelength IR radiation continue to be of considerable interest for many applications such as night vision, defense and security, rescue, life sciences, industrial processing etc. For this purpose photodetection based on InSb is a well known technology in mid wavelength (3-5 μm) range. LÄS MER