Search for dissertations about: "Halvledarfysik"

Showing result 6 - 10 of 50 swedish dissertations containing the word Halvledarfysik.

  2. 6. High performance materials and processing technology for uncooled 1.3 μm laser diodes

    Author : Roberta Campi; Gunnar Landgren; Abdallah Ougazzaden; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MOCVD; InGaAsP; AlGaInAsP; AlGaInAs; In-situ etching; TBCI; Semiconductor physics; Halvledarfysik;

    Abstract : This thesis investigates different material systems and processing technology for high temperature compatible laser diodes used in volume applications within the 1.3-μm telecom wavelength window. READ MORE

  4. 7. MOVPE Growth and Characterization of Low-Dimensional III-V Semiconductor Structures

    Author : Niclas Carlsson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semiconductory physics; low-dimensional structures; metalorganic vapour phase epitaxy; quantum wells; self-assembled dots; quantum dots; Fysicumarkivet A:1998:Carlsson; Halvledarfysik;

    Abstract : Metalorganic vapour phase epitaxy is used for growth of low-dimensional III-V semiconductor structures. The roughness of heterointerfaces in GaAs/GaInP quantum well structures is studied by photoluminescence emission from extremely narrow quantum wells. READ MORE

  5. 8. Magneto-optical studies of dilute nitrides and II-VI diluted magnetic semiconductor quantum structures

    Author : Daniel Dagnelund; Irina Buyanova; Weimin Chen; Marek Godlewski; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dilute nitrides; DMS; defect; ODMR; optically detected magnetic resonance; spin injection; PLE; photoluminescence excitation; post-growth hydrogenation; heterojunction; Semiconductor physics; Halvledarfysik;

    Abstract : This thesis work aims at a better understanding of magneto-optical properties of dilute nitrides and II-VI diluted magnetic semiconductor quantum structures. The thesis is divided into two parts. The first part gives an introduction of the research fields, together with a brief summary of the scientific results included in the thesis. READ MORE

  6. 9. Epitaxial Growth and Design of Nanowires and Complex Nanostructures

    Author : Kimberly Dick Thelander; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Natural science; III-V Semiconductor Materials; Fysik; Kondenserade materiens egenskaper:struktur; phase equilibria; crystallography; thermal and mechanical properties; Condensed matter:stucture; egenskaper termiska och mekaniska ; kristallografi; fasjämvikt; Naturvetenskap; Physics; Nanowires; Vapour Phase Epitaxy; Semiconductory physics; Halvledarfysik;

    Abstract : This thesis describes the epitaxial growth of III-V semiconductor nanowires using Au seed particles, and the design of more complex three-dimensional branched structures from these wires. Growth was performed by metallorganic vapour phase epitaxy, in which precursor molecules for the semiconductor material components are introduced in a low-pressure vapour. READ MORE

  7. 10. Transport Studies of Local-Gate Defined Quantum Dots in Nanowires

    Author : Carina Fasth; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semiconductory physics; Fysik; Physics; quantum devices; nanowire; quantum dot; Halvledarfysik;

    Abstract : This thesis focuses on electrical transport in semiconductor InAs nanowires grown by chemical beam epitaxy. Initially, transport length scales of homogeneous InAs n-type nanowires are characterized by low-temperature magnetoconductance measurements. The measurements show phase-coherent conductivity corrections. READ MORE