Search for dissertations about: "GaAs introduction"

Showing result 1 - 5 of 10 swedish dissertations containing the words GaAs introduction.

  2. 1. Growth and optical properties of III-V semiconductor nanowires: : Studies relevant for solar cells

    Author : Vilgaile Dagyte; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nanowire; semiconductor; Photovoltaics; Epitaxy; Optoelectronics; GaAs; GaInP; Fysicumarkivet A:2018:Dagyté;

    Abstract : This thesis deals with epitaxial growth and optical properties of semiconductor nanowires with implications and insights about materials for solar cells. The chapters leading up to the papers give a broader background and an introduction to the field and include nanowires and their synthesis, semiconductor properties, solar cell operational principles, light interaction with a nanowire array, and optical characterization of such arrays. READ MORE

  4. 2. Integrated Oscillators in InGaP/GaAs HBT Technology

    Author : Szhau Lai; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The thesis presents two major concerns in the design of low phase-noise MMIC VCOs; the active device model and the simulation tool. Besides, several design techniques to improve VCO tuning range and phase noise are investigated. The VCOs designed in this work are implemented in InGaP/GaAs HBT technology. READ MORE

  5. 3. Development of 1.3-μm GaAs-based vertical-cavity surface-emitting lasers

    Author : Petrus Sundgren; Mattias Hammar; Harri Lipsanen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik;

    Abstract : Long-wavelength vertical-cavity surface-emitting lasers (VCSELs) are desirable as low-cost sources for optical metropolitan-area and access networks. In the development of 1.3-µm VCSELs, most attention today is given to monolithic GaAs-based solutions, although no established active material exists in this wavelength region. READ MORE

  6. 4. Optical characterization of dilute nitride semiconductors and related quantum structures

    Author : Morteza Izadifard; G. Yu. Rudko; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dilute nitrides; optoelectronics; photonics; Optical physics; Optisk fysik;

    Abstract : Dilute nitrides (i.e. READ MORE

  7. 5. Long-wavelength vertical-cavity lasers based on InP/GaInAsp bragg reflectors

    Author : Stefan Rapp; KTH; []
    Keywords : ;

    Abstract : Vertical-cavity surface-emitting lasers (VCSELs) operatingat long wavelength (1.3-1.55µm) are of great interest asinexpensive, high-performance light sources for opticalcommunication systems. READ MORE