Search for dissertations about: "Si SiGe quantum well"

Showing result 1 - 5 of 10 swedish dissertations containing the words Si SiGe quantum well.

  1. 1. Near-infrared photodetectors based on Si/SiGe nanostructures

    University dissertation from Institutionen för fysik, kemi och biologi

    Author : Anders Elfving; Linköpings universitet.; Linköpings universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; SiGe; Ge dots; nanostructures; molecular beam epitaxy; photodetector; NATURAL SCIENCES Physics Condensed matter physics Semiconductor physics; NATURVETENSKAP Fysik Kondenserade materiens fysik Halvledarfysik;

    Abstract : Two types of photodetectors containing Ge/Si quantum dots have been fabricated based on materials grown by molecular beam epitaxy and characterized with several experimental techniques. The aim was to study new device architectures with the implementation of Ge nanostructures, in order to obtain high detection efficiency in the near infrared range at room temperature. READ MORE

  2. 2. Growth and Characterization of Strain-engineered Si/SiGe Heterostructures Prepared by Molecular Beam Epitaxy

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Ming Zhao; Linköpings universitet.; Linköpings universitet.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Si SiGe; Strain engineering; Molecular beam epitaxy; THz; Quantum cascade; Strain relaxation; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Abstract : The strain introduced by lattice mismatch is a built-in characteristic in Si/SiGe heterostructures, which has significant influences on various material properties. Proper design and precise control of strain within Si/SiGe heterostructures, i.e. READ MORE

  3. 3. Resonant states in modulation-doped heterostructures

    University dissertation from Anders Blom, Sölvegatan 14 A, S-223 62 Lund, Sweden

    Author : Anders Blom; Lund University.; Lunds universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematical and general theoretical physics; generation-recombination noise; THz laser; classical mechanics; relativity; quantum mechanics; statistisk fysik; gravitation; relativitet; kvantmekanik; klassisk mekanik; Matematisk och allmän teoretisk fysik; thermodynamics; termodynamik; statistical physics; donor energies; Si SiGe quantum well; central-cell effect; impurity absorption; Fysicumarkivet A:2003:Blom; Resonant states; impurity levels;

    Abstract : This thesis deals with the properties of donors placed inside or outside a heterostructure quantum well (QW). The focus of the investigation has been on the formation of resonant states, which are a hybridization of the discrete localized impurity levels and the continuous two-dimensional QW subbands. READ MORE

  4. 4. Application of SiGe(C) in high performance MOSFETs and infrared detectors

    University dissertation from Stockholm : Royal Institute of Technology

    Author : Mohammadreza Kolahdouz Esfahani; KTH.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Silicon Germanium Carbon SiGeC ; Reduced Pressure Chemical Vapor Deposition RPCVD ; Epitaxy; Pattern Dependency; MOSFET; Mobility; bolometer; Quantum Well; Infrared IR Detection; Ni Silicide; High Resolution X-ray Diffraction HRXRD ; High Resolution Scanning Electron Microscopy HRSEM ; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Abstract : Epitaxially grown SiGe(C) materials have a great importance for many device applications. In these applications, (strained or relaxed) SiGe(C) layers are grown either selectively on the active areas, or on the entire wafer. READ MORE

  5. 5. Epitaxial Growth, Processing and Characterization of Semiconductor Nanostructures

    University dissertation from Division of Solid State Physics, Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden

    Author : Magnus Borgström; Lund University.; Lunds universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum transport; resonant tunneling diodes; relativity; quantum mechanics; statistical physics; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; gravitation; statistisk fysik; termodynamik; classical mechanics; Mathematical and general theoretical physics; whiskers; ultra high vacuum chemical vapor deposition; RTD; self assembled quantum dots; semiconducting III-V materials; nanowires; metalorganic vapor phase epitaxy; MOVPE; nanostructures; AFM; Atomic force microscopy; InAs; Fysicumarkivet A:2003:Borgström;

    Abstract : This thesis deals with the growth, processing and characterization of nano-sized structures, eg., self-assembled quantum dots and nano-wires. READ MORE