Sökning: "Semiconductor nanostructures"

Visar resultat 6 - 10 av 89 avhandlingar innehållade orden Semiconductor nanostructures.

  1. 6. Epitaxial growth of semiconductor nanowires

    Författare :Ann Persson; Fasta tillståndets fysik; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 7. Theoretical study of electronic structure and optical properties of semiconductor nanostructures

    Författare :Martin Persson; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanowire superlattices; nanostructures; band structure; wavefunctions; III-V materials; optical properties; Halvledarfysik; Semiconductory physics; Fysicumarkivet A:2004:Persson; Tight-binding theory; nanocrystals; nanowires;

    Sammanfattning : In this thesis, the electronic structure and optical properties of semiconductor nanostructures are studied theoretically. Three types of nanostructures have been studied, silicon nanocrystals, free-standing III-V nanowires and free-standing GaAs/AlGaAs nanowire superlattices. LÄS MER

  4. 8. Growth Dynamics of Semiconductor Nanostructures by MOCVD

    Författare :Kai Fu; Ying Fu; Lars-Erik Wernersson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Growth dynamics; Monte Carlo; semiconductor quantum dot; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : Semiconductors and related low-dimensional nanostructures are extremely important in the modern world. They have been extensively studied and applied in industry/military areas such as ultraviolet optoelectronics, light emitting diodes, quantum-dot photodetectors and lasers. LÄS MER

  5. 9. Heterojunctions between zinc oxide nanostructures and organic semiconductor

    Författare :Amal Hansson (f.d. Wadeasa); Xavier Crispin; Dominique Vuillaume; Linköpings universitet; []
    Nyckelord :ZnO nanostructures; Organic semiconductors; LEDs; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Lighting is a big business, lighting consumes considerable amount of the electricity. These facts motivate for the search of new illumination technologies that are efficient. Semiconductor light emitting diodes (LEDs) have huge potential to replace the traditional primary incandescent lighting sources. LÄS MER

  7. 10. Study of GaN Based Nanostructures and Hybrids

    Författare :Mathias Forsberg; Galia Pozina; Ching-Lien Hsiao; Kevin P. O'Donnell; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sputtering; Forster; Semiconductor; Nitride; GaN; Hybrid; Nanorods; Nanostructure; Thin film; Förstoffning; Sputtring; Förster; Halvledare; Nitrid; GaN; Hybrider; Nanostavar; Nanostrukturer; tunnfilmer;

    Sammanfattning : GaN and its alloys with Al and In belong to the group III nitride semiconductors and are today the materials of choice for efficient white light emitting diodes (LEDs) enabling energy saving solid state lighting. Currently, there is a great interest in the development of novel inexpensive techniques to fabricate hybrid LEDs combining high quality III-N quantum well (QW) structures with inexpensive colloidal nanoparticles or conjugated polymers. LÄS MER