Search for dissertations about: "semiconductor heterostructures"

Showing result 1 - 5 of 62 swedish dissertations containing the words semiconductor heterostructures.

  2. 1. Semiconductor Hetero- and Nanostructures

    Author : Jonas Ohlsson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Heterostructures; Nanowhiskers; Semiconductory physics; Chemical Beam Epitaxy; Nanostructures; Halvledarfysik; Fysicumarkivet A:2001:Ohlsson;

    Abstract : In this thesis, chemical beam epitaxy was used to fabricate nm-sized crystalline structures. Most of the systems were based on heterostructures, i.e., combinations of different kinds of crystalline materials. READ MORE

  4. 2. Properties of Fe/ZnSe Heterostructures : A Step Towards Semiconductor Spintronics

    Author : Fredrik Gustavsson; Poul Erik Lindelof; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; semiconductor spintronics Fe ZnSe heterostructures spin injection interface magnetism magnetic tunnel junctions; Fysik; Physics; Fysik; Fysik; Physics;

    Abstract : In the present thesis, the properties at ferromagnet/semiconductor interfaces, relevant for semiconductor spintronics applications, are addressed. Semiconductor spintronics refers to the possibility of storing information using the electron spin, additional to the electron charge, for enhanced flexibility in nanoscale semiconductor devices. READ MORE

  5. 3. Epitaxial growth of semiconductor nanowires

    Author : Ann Persson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; materialteknik; nanowires; nanostructures; growth mechanism; Materiallära; Material technology; Halvledarfysik; Semiconductory physics; nanoelectronics; Au; VSS; VLS; surface diffusion; band gap engineering; InP; ternary system; GaAs; heterostructures; InAs; CBE; epitaxy;

    Abstract : This thesis describes the results obtained from investigations carried out on epitaxially grown III-V semiconductor nanowires aimed at improving our understanding of and knowledge on the growth mechanism of nanowires. This is important to be able to control their growth, in order to make future applications possible. READ MORE

  6. 4. Electron Transport in Semiconductor Nanowires

    Author : Mikael Björk; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; heterostructures; single electron transistors; resonant tunneling; quantum dots; weak antilocalization; Halvledarfysik; field effect transistors; Semiconductory physics; Fysicumarkivet A:2004:Björk; Low-dimensional structures; nanowires; chemical beam epitaxy;

    Abstract : In this thesis, semiconductor nanowires are studied from the point of view of growth and electrical properties. The growth of nanowires is done by chemical beam epitaxy (CBE), an ultra-high vacuum technique allowing a precise control of precursor deposition and low growth rates. READ MORE

  7. 5. Metamorphic Heterostructures and Lasers on GaAs

    Author : Ivar Tångring; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; metamorphic heterostructures; InGaAs quantum well; graded buffer layer; Semiconductor laser; GaAs; molecular beam epitaxy; telecom laser;

    Abstract : The objective of this thesis is to demonstrate the metamorphic growth of heterostructure lasers on GaAs substrates. Many heterostructure devices have their performance limited by the need to grow on lattice-matched substrates. READ MORE