Sökning: "Si 111"

Visar resultat 21 - 25 av 51 avhandlingar innehållade orden Si 111.

1. 21. Complex Excitations in Advanced Functional Materials

   Författare :Johann Lüder; Barbara Brena; Frank de Groot; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; X-ray Absorption Spectroscopy; Photoelectron Spectroscopy; Adsorption; Phthalocyanines; Biphenylene; Excitons; Functional Materials;

   Sammanfattning : Understanding the fundamental electronic properties of materials is a key step to develop innovations in many fields of technology. For example, this has allowed to design molecular based devices like organic field effect transistors, organic solar cells and molecular switches. LÄS MER

3. 22. Growth of 3C-SiC and Graphene for Solar Water-Splitting Application

   Författare :Yuchen Shi; Jianwu W. Sun; Rositsa Yakimova; Mikael Syväjärvi; Gholamreza Yazdi; Didier Chaussende; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Silicon carbide (SiC) is regarded as an important semiconductor for a variety of applications including high-temperature, high-power and high-frequency devices. The most common polytypes of SiC are hexagonal (4H- or 6H-SiC) and cubic silicon carbide (3C-SiC), which differ from each other by the ordering of the Si–C bilayers along the c-axis crystal direction. LÄS MER

4. 23. Characterization of Surfaces Relevant to Nanotechnology

   Författare :Emelie Hilner; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanotechnology; surface science; semiconductors; scanning tunneling microscopy; spectroscopic photoemission and low energy electron microscopy; low energy electron diffraction;

   Sammanfattning : In this thesis investigations of the structure and dynamics of semiconductor surfaces relevant for the synthesis of nanostructures are presented. The studies were performed using Scanning Tunneling Microscopy (STM), Low Energy Electron Diffraction (LEED), and Spectroscopic PhotoEmission and Low Energy Electron Microcopy (SPELEEM). LÄS MER

5. 24. Magnetron Sputter Epitaxy of GaN Epilayers and Nanorods

   Författare :Muhammad Junaid; Jens Birch; Lars Hultman; K. Scott Butcher; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : In this research, electronic-grade GaN(0001) epilayers and nanorods have been grown onto Al2O3(0001) and Si(111) substrates, respectively, by reactive magnetron sputter epitaxy (MSE) using liquid Ga as a sputtering target. MSE, employing ultra high vacuum conditions, high-purity source materials, and lowenergy ion assisted deposition from substrate biasing, is a scalable method, lending itself to large area GaN synthesis. LÄS MER

7. 25. Epitaxial Lateral Overgrowth of Indium Phosphide and Its Application in Heteroepitaxy

   Författare :Yanting Sun; KTH; []
   Nyckelord :electronics; electrical; material science;

   Sammanfattning : Monolithic integration of optoelectronics on silicon is adream. This thesis deals with the studies on the heteroepitaxyof indium phosphide on silicon substrate towards making thatdream come true. Materials growth issues, characterization anddefect identification are addressed. LÄS MER