Sökning: "hydrogen in silicon"

Visar resultat 16 - 20 av 57 avhandlingar innehållade orden hydrogen in silicon.

  1. 16. Femtosecond Laser Microfabrication of Glasses and 2D Materials for Photonics and Energy Storage

    Författare :Po-Han Huang; Frank Niklaus; Göran Stemme; Kristinn Gylfason; Yves Bellouard; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Femtosecond laser; 3D printing; self-organized nanogratings; micromachining; silica glass; silicon-rich glass; hydrogen silsesquioxane; photonic microdevice; microsupercapacitor; 2D materials; direct ink writing; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Femtosecond laser-based fabrication technologies have seen rapid developments in the past decades, thanks to the capability of femtosecond lasers to induce localized multiphoton absorption in materials. Multiphoton absorption can result in various material modifications that can be leveraged for additive and subtractive manufacturing. LÄS MER

  3. 17. Silicon Nitride Based Coatings Grown by Reactive Magnetron Sputtering

    Författare :Tuomas Hänninen; Hans Högberg; Susann Schmidt; Lars Hultman; Arutiun P. Ehiasarian; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Silicon nitride and silicon nitride-based ceramics have several favorable material properties, such as high hardness and good wear resistance, which makes them important materials for the coating industry. This thesis focuses the synthesis of silicon nitride, silicon oxynitride, and silicon carbonitride thin films by reactive magnetron sputtering. LÄS MER

  4. 18. Calculations of defect related properties in semiconductors

    Författare :Sven Öberg; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Scientific Computing; Teknisk-vetenskapliga beräkningar;

    Sammanfattning : Many of the most important and useful properties of crystalline materials, such as mechanical strength and electrical resistance, are determined by the presence of lattice defects and impurities. Well known examples are dislocations which control plastic flow and make metals ductile, and dopant atoms which control the extrinsic conduction in semiconductors and insulators. LÄS MER

  5. 19. Light emitting devices based on silicon nanostructures

    Författare :Nenad Lalic; KTH; []
    Nyckelord :;

    Sammanfattning : Although silicon is the dominant semiconductor today, lightemitting devices are currently based on compound semiconductorsdue to their direct band-gap, which promotes fast radiativerecombination. However, in nanometer-size silicon structures,carrier confinement enhances the radiative recombination,while, at the same time, suppresses diffusion to non-radiativerecombination centra, resulting in a significant increase inlight emission efficiency. LÄS MER

  7. 20. Stability of point defects in silicon induced by high energy low dose ion implantation

    Författare :Lalita Josyula; KTH; []
    Nyckelord :;

    Sammanfattning : Ion implantation is a key' process for the introduction ofdopants in semiconductor technology. It involves bombarding thesubstrate material with energetic ions. LÄS MER