Sökning: "GaAs Si GaAs"

Visar resultat 1 - 5 av 42 avhandlingar innehållade orden GaAs Si GaAs.

  1. 1. Silicon δ-doping and GaAs/Si/GaAs heterostructures

    Författare :Jan Thordson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; GaAs Si GaAs; GaAs; delta-doping; heterostructures; MBE; silicon;

    Sammanfattning : .... LÄS MER

  3. 2. Silicon δ-doping and Isoelectronic Doping in GaAs ans GaN Layers Grown by MBE

    Författare :Jan Thordson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MBE; doping; GaN; III-V; delta-doping; heterostructures; GaAs;

    Sammanfattning : This work concerns MBE-grown material, particularly physical effects due to controlled impurities of Si and N in arsenides, and the growth of nitrides and studies of Al- and As-impurities in them. Apart from interesting physical phenomena there are important device applications. The first part is devoted to studies of Si .delta. LÄS MER

  4. 3. Nanostructured Semiconductor Materials for Light Manipulation Functions

    Författare :Dennis Visser; Srinivasan Anand; Alvaro Blanco; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; semiconductor materials; c-Si; a-Si; GaInP; TiO2; ZnO; nanostructuring; light manipulation functions; top-down fabrication; embossing; FDTD simulations; nanowires; nanopillars; nanodisks; microcones; optical response; reflectance; transmittance; absorbance; spectrophotometry; photoluminescence; Mie resonators; mode coupling; broadband anti-reflection; light extraction enhancement; optical sensing; optical color filters; color conversion; Optik och fotonik; Optics and Photonics;

    Sammanfattning : Structuring of semiconductor materials is utilized in many optoelectronic devices, e.g, in order to make them more efficient, cost-effective, and/or to obtain specific wavelength-engineered responses. Semiconductor materials are widely used in optoelectronic devices due to their favorable optical and electric properties. LÄS MER

  5. 4. Gallium arsenide based buried heterostructure laser diodes with aluminium-free semi-insulating materials regrowth

    Författare :Carlos Angulo Barrios; KTH; []
    Nyckelord :semiconductor lasers; in-plane lasers; VCSELs; GaAs; GaInP; semi-insulating materials; hydride vapour phase epitaxy; regrowth; buried heterostructure; leakage current; simulation;

    Sammanfattning : Semiconductor lasers based on gallium arsenide and relatedmaterials are widely used in applications such as opticalcommunication systems, sensing, compact disc players, distancemeasurement, etc. The performance of these lasers can beimproved using a buried heterostructure offering lateralcarrier and optical confinement. LÄS MER

  7. 5. Composite Nanostructured Materials for Renewable Energy Applications

    Författare :Elfatih Mohammed Mustafa; Omer Nur; Magnus Willander; Malik Maaza; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar energy; Photocatalysis; Solar cells; Nanostructured materials; ZnO; CuO; Ta2O5; GaAs;

    Sammanfattning : Diverse sources of energy are becoming increasingly significant in today's world. The most common source of energy today is fossil fuels, such as coal, oil, and gas. While this energy source has many advantages, it also comes with many problems. LÄS MER