Sökning: "ultrathin films"

Visar resultat 21 - 25 av 26 avhandlingar innehållade orden ultrathin films.

  1. 21. Interface Phenomena in Organic Electronics

    Författare :Qinye Bao; Mats Fahlman; Xianjie Liu; Slawomir Braun; Mathieu Turbiez; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Organic electronics based on organic semiconductors offer tremendous advantages compared to traditional inorganic counterparts such as low temperature processing, light weight, low manufacturing cost, high throughput and mechanical flexibility. Many key electronic processes in organic electronic devices, e.g. LÄS MER

  3. 22. Investigation of surface and interface phenomena in silicon and silicon dioxide systems

    Författare :Yong-Bin Wang; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The characterization of a thin silicon dioxide (SiO2) film close to the silicon dioxide -silicon interface is very important in understanding and improving solid state electronic and optoelectronic devices. The refractive index, the dielectric constant, and the density of oxide film, are all related to the chemical composition and porosity (voids) of the films. LÄS MER

  4. 23. Molecules and Clusters on Oxide Surfaces

    Författare :Evren Ataman; Synkrotronljusfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In this thesis X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, scanning tunneling microscopy,and density functional theory have been used to study the fundamental interactions between model oxidesurfaces and either organic, mixed organic/inorganic, or purely inorganic adsorbate layers. As model oxidesurfaces have served the rutile TiO2(110) surface and an in-situ grown iron oxide film supported by a Pt(111)surface. LÄS MER

  5. 24. Graphene Oxide Technology to Advance the Performance of Poly(lactic acid) Materials

    Författare :Huan Xu; Minna Hakkarainen; Jean-Marie Raquez; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Poly lactic acid ; Graphene Oxide; Stereocomplex; Nucleation Mechanism; Crystalline Morphology; Filler Structure; Mechanical Properties; Gas Barrier; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : In the past two decades, a burgeoning biorefinery concept has grown in concert with the materials science, contributing to the rise of biobased materials that respect environment and are versatile for various applications. An excellent example is poly(lactic acid) (PLA) that exhibits high strength and desirable degradability. LÄS MER

  7. 25. Band gap engineering in Cu2ZnGexSn1-xS4 thin film solar cells

    Författare :Nishant Saini; Charlotte Platzer-Bjorkman; Jes K Larsen; Edgardo Saucedo; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CZTS; CZGTS; bandgap grading; ZTO; KCN-etching; titanium nitride; solar cell; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

    Sammanfattning : Photovoltaics based on kesterite Cu2ZnSnS4 (CZTS) has attracted interest as a sustainable alternative to other thin film technologies due to their tunable material properties and earth-abundance. However, the efficiency is limited to 12. LÄS MER