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Metal and Semiconductor Nanocrystals for Quantum Devices

Magnusson, Martin LU (2001)
Abstract (Swedish)
Popular Abstract in Swedish

Denna avhandling beskriver tillverkning av partiklar av metaller och halvledare samt dessas användning i nya typer av elektroniska komponenter och nanostrukturer. Partiklarna tillverkas med aerosolteknik, dels med kända metoder och dels med nyutvecklade. Partiklarna är mellan 5 och 80 nanometer (miljarddels meter) i diameter, och deras bildning, struktur och sammansättning studeras med aerosoltekniska metoder samt med bl.a. elektronmikroskopi. Komponenterna och de övriga nanostrukturerna karakteriseras med bl.a. elektriska mätmetoder.



Avhandlingen innehåller en populärvetenskaplig del på svenska.
Abstract
Aerosol technology was used to develop new methods for fabrication of size-selected, nanometer-sized particles of metals and semiconductors. Such particles were used to realize different types of quantum devices and nanometer-sized structures. The thesis contains an introduction, five papers on particle fabrication, and five papers on particle-based quantum devices.



Size-selected gallium and indium particles were allowed to react with arsine, phosphine, and ammonia, resulting in crystalline particles of gallium arsenide and indium phosphide, between 8 and 50 nanometers in diameter. Gold particles were made by the evaporation/condensation method, and sintering and thermal charging were studied. Tungsten particles were... (More)
Aerosol technology was used to develop new methods for fabrication of size-selected, nanometer-sized particles of metals and semiconductors. Such particles were used to realize different types of quantum devices and nanometer-sized structures. The thesis contains an introduction, five papers on particle fabrication, and five papers on particle-based quantum devices.



Size-selected gallium and indium particles were allowed to react with arsine, phosphine, and ammonia, resulting in crystalline particles of gallium arsenide and indium phosphide, between 8 and 50 nanometers in diameter. Gold particles were made by the evaporation/condensation method, and sintering and thermal charging were studied. Tungsten particles were made by thermal cracking of tungsten hexacarbonyl. Gold particles were alloyed with indium and gallium to make particles with tailored size and composition, and the particle structure and composition were studied. A method using electrostatic forces for placing particles during deposition was developed.



Individual particles of gold and indium were used to make single electron tunneling devices. A single electron transistor working up to 200 K was made by contacting a 7 nanometer gold particle with 3 nanometer carbon nanotubes. Gold particles were used as seeds for growth of whiskers of III-V semiconductors with internal heterostructures. Tungsten particles were epitaxially embedded in gallium arsenide. (Less)
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author
opponent
  • Professor Andres, Ronald P., Purdue University, Indiana, USA
organization
publishing date
type
Thesis
publication status
published
subject
keywords
thermal and mechanical properties, quantum devices, nanocrystals, nanoparticles, gold, aerosol technology, tungsten, gallium arsenide, indium phosphide, semiconductors, thermal charging, nanoxerography, single electron transistors, nanowhiskers, Physics, Fysik, Semiconductory physics, Condensed matter:stucture, Halvledarfysik, crystallography, phase equilibria, Kondenserade materiens egenskaper:struktur, egenskaper (termiska och mekaniska), kristallografi, fasjämvikt, Fysicumarkivet A:2001:Magnusson
pages
156 pages
publisher
Solid State Physics, Lund University
defense location
Sal B, Fysicum, Lund
defense date
2001-12-07 10:15
external identifiers
  • Other:ISRN: LUFTD2/TFFF--01/1062-SE
ISBN
91-7874-148-3
language
Swedish
LU publication?
yes
id
696d7bf4-7b7d-4928-a8e8-895fcd6e820a (old id 42197)
date added to LUP
2007-08-01 14:20:29
date last changed
2016-09-19 08:45:06
@misc{696d7bf4-7b7d-4928-a8e8-895fcd6e820a,
  abstract     = {Aerosol technology was used to develop new methods for fabrication of size-selected, nanometer-sized particles of metals and semiconductors. Such particles were used to realize different types of quantum devices and nanometer-sized structures. The thesis contains an introduction, five papers on particle fabrication, and five papers on particle-based quantum devices.<br/><br>
<br/><br>
Size-selected gallium and indium particles were allowed to react with arsine, phosphine, and ammonia, resulting in crystalline particles of gallium arsenide and indium phosphide, between 8 and 50 nanometers in diameter. Gold particles were made by the evaporation/condensation method, and sintering and thermal charging were studied. Tungsten particles were made by thermal cracking of tungsten hexacarbonyl. Gold particles were alloyed with indium and gallium to make particles with tailored size and composition, and the particle structure and composition were studied. A method using electrostatic forces for placing particles during deposition was developed.<br/><br>
<br/><br>
Individual particles of gold and indium were used to make single electron tunneling devices. A single electron transistor working up to 200 K was made by contacting a 7 nanometer gold particle with 3 nanometer carbon nanotubes. Gold particles were used as seeds for growth of whiskers of III-V semiconductors with internal heterostructures. Tungsten particles were epitaxially embedded in gallium arsenide.},
  author       = {Magnusson, Martin},
  isbn         = {91-7874-148-3},
  keyword      = {thermal and mechanical properties,quantum devices,nanocrystals,nanoparticles,gold,aerosol technology,tungsten,gallium arsenide,indium phosphide,semiconductors,thermal charging,nanoxerography,single electron transistors,nanowhiskers,Physics,Fysik,Semiconductory physics,Condensed matter:stucture,Halvledarfysik,crystallography,phase equilibria,Kondenserade materiens egenskaper:struktur,egenskaper (termiska och mekaniska),kristallografi,fasjämvikt,Fysicumarkivet A:2001:Magnusson},
  language     = {swe},
  pages        = {156},
  publisher    = {ARRAY(0xb500db0)},
  title        = {Metal and Semiconductor Nanocrystals for Quantum Devices},
  year         = {2001},
}