Sökning: "silane chemistry"

Visar resultat 21 - 25 av 30 avhandlingar innehållade orden silane chemistry.

  1. 21. Chloride-based Silicon Carbide CVD

    Författare :Henrik Pedersen; Erik Janzén; Anne Henry; Yaroslav Koshka; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi;

    Sammanfattning : Silicon carbide (SiC) is a promising material for high power and high frequency devices due to its wide bandgap, high break down field and high thermal conductivity. The most established technique for growth ofepitaxial layers of SiC is chemical vapor deposition (CVD) at around 1550 °C using silane, SiH4, and lighthydrocarbons e g propane, C3H8, or ethylene, C2H4, as precursors heavily diluted in hydrogen. LÄS MER

  3. 22. Fluorinated SiC CVD

    Författare :Pontus Stenberg; Erik Janzén; Henrik Pedersen; Angel Yanguas-Gil; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : For the emerging semiconductor material silicon carbide (SiC) used in high power devices, chemical vapor deposition (CVD) is the most prominent method to create the electrically active SiC epitaxial layers in the device. The process of growing such epitaxial layers is to use a hydrocarbon and silane diluted in hydrogen flow through a hot chamber where chemical reactions take place in such manner that Si and C finally deposit on the surface creating epitaxial SiC. LÄS MER

  4. 23. Synthesis, Surface Modification, and Characterization of Metal Oxide Nanoparticles : Nanoprobes for Signal Enhancement in Biomedical Imaging

    Författare :Linnéa Selegård; Kajsa Uvdal; Pentti Tengvall; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : In this thesis we investigate crystalline metal oxide nanoparticles of our own design to obtain nanoprobes for signal enhancement and bioimaging purposes. We report fabrication, surface modification and characterization of nanoparticles based on zinc (Zn), and rare earths (i.e. gadolinium (Gd) and europium (Eu)) singly and in combination. LÄS MER

  5. 24. Chemical vapour deposition of sp2-hybridised B-C-N materials from organoborons

    Författare :Laurent Souqui; Anne Henry; Hans Högberg; Henrik Pedersen; John R. Abelson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boron nitride; epitaxy; CVD; boron carbide; carbonitride; PECVD;

    Sammanfattning : Thin films of sp2-BN are promising materials for graphene and deep-UV optoelectronics. They are typically deposited by thermally activated chemical vapour deposition (CVD) from triethylboron (TEB) and ammonia (NH3) at 1500 °C, albeit in a narrow process window. LÄS MER

  7. 25. Multilayer Based Nanogels and Bio-lubricants

    Författare :Chao Liu; Per Claesson; Vitaly Kocherbitov; KTH; []
    Nyckelord :;

    Sammanfattning : Surface chemistry plays an important role in numerous technological innovations, and gives the ability to modify and control surface and interface properties. Layer-by-Layer (LbL) self-assembly is a simple concept that can provide a route to versatile combination of materials as well as fine control of film thickness, hydrophobicity, thermal, optical and electrical properties. LÄS MER