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Showing result 1 - 5 of 391 swedish dissertations matching the above criteria.

  2. 1. Synthesis and Modification of Conjugated Materials for Polymer Solar Cells

    Author : Zandra George; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; polymer interlayer; polymer solar cells; stability; conjugated polymers; fullerene derivatives;

    Abstract : Polymer solar cells have emerged as a promising alternative to silicon based solar cells. One of the advantages of polymer solar cells is the possibility to use roll-to-roll techniques for large-scale device production. However, in order to fully utilize this technique, several issues need to be resolved. READ MORE

  4. 2. Thermoplastic Insulation for High Voltage Cables

    Author : Yingwei Ouyang; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polyethylene; insulation; polypropylene; blends; thermoplastic; high voltage; polymer;

    Abstract : High voltage direct current (HVDC) cables that seamlessly integrate renewables have an important contribution to the modern world’s efforts towards a more sustainable future. Extruded HVDC cables that efficiently and reliably transport electricity require robust insulation materials with good thermomechanical and dielectric properties. READ MORE

  5. 3. Mass Transport Through Polymer Films: The Importance of Interfaces and Compatibility

    Author : Sofie Gårdebjer; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose; Barriers; Surface modification; Compatibility; Interfaces; Polymer films;

    Abstract : Different types of barriers are used in packaging to keep and protect products from the surrounding environment and are often essential for storing and transportation. Today, many barriers are made of different types of polymers, but since most polymers do not exhibit desired barrier properties on their own, combinations must be used. READ MORE

  6. 4. Poly(N-Isopropylacrylamide) Polymer Brush Functionalized Nanostructures as Thermo-Responsive Gating Systems for Protein Transportation

    Author : Justas Svirelis; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomolecule transportation; Poly N-Isopropylacrylamide ; polymer brushes; fluorescence microscopy; thermo-responsive polymers; surface plasmon resonance;

    Abstract : Controlling molecule translocation through nanosized gaps is of great interest in novel systems for single molecule analysis and biomolecular membranes. The molecular gating property of thermo-responsive end-grafted poly(N-isopropylacrylamide) (PNIPAM) polymer brushes on well-shaped gold-silica nanostructures is intended to be investigated for controlled protein transportation via extinction spectroscopy and fluorescence microscopy methods below and above PNIPAM lower critical solution temperature (LCST; 32 °C in water). READ MORE

  7. 5. Design, Synthesis and Characterization of Conjugated Polymers for Photovoltaics and Electrochromics

    Author : Kim Bini; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; organic electronics; conjugated polymers; electrochromic polymers; polymer solar cells; all-polymer solar cells; side chain engineering;

    Abstract : With the invention of organic electronics, a new class of materials needed to be explored and suitable applications found. The use as semiconductors in many different devices has been explored, where photovoltaics, light-emitting diodes and field-effect transistors have been prominent. READ MORE