Sökning: "Conjugated Polymer"

Visar resultat 1 - 5 av 125 avhandlingar innehållade orden Conjugated Polymer.

  1. 1. Photoluminescence in Conjugated Polymers : Experimental Investigations of Excited State Events

    Författare :Mathias Theander; Linköpings universitet; []

    Sammanfattning : After an extensive scientific effort spent on the understanding of conjugated polymers and molecules, these material are on the border of commercialisation. Even though highly efficient devices can be made with conjugated polymers the underlying physics is far from being fully understood. LÄS MER

  2. 2. A study of devices and materials for polymer based LEDs

    Författare :Jonas Birgerson; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; conjugated; polymer; XPS; LED; Magnesium; blend; copolymer;

    Sammanfattning : Since the discovery that it is possible to dope conjugated polymers into high electrical conductivity the research in the field of conjugated polymers has increased a lot. Much of the research activity has been concentrated to the design and fabrication of light emitting devices. LÄS MER

  3. 3. Synthesis and Modification of Conjugated Materials for Polymer Solar Cells

    Författare :Zandra George; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; polymer interlayer; polymer solar cells; stability; conjugated polymers; fullerene derivatives;

    Sammanfattning : 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. LÄS MER

  4. 4. Conjugated polymers for optoelectronics

    Författare :Lars Johan Lindgren; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer Light-Emitting Diodes; Conjugated polymers; Polyfluorenes; Polymer Solar Cells;

    Sammanfattning : The work presented in thesis is divided into two parts; conjugated polymers for light-emitting diodes and conjugated polymers for solar cells. The main focus was on the synthesis and characterisation of the conjugated polymers, together with device preparation and characterisation. LÄS MER

  5. 5. Morphology and material stability in polymer solar cells

    Författare :Rickard Hansson; Ellen Moons; Andreas Opitz; Mats Fahlman; Karlstads universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; polymer solar cell; photovoltaics; morphology; photo-degradation; conjugated polymer; fullerene; synchroton-based techniques; Physics; Fysik;

    Sammanfattning : Polymer solar cells are promising in that they are inexpensive to produce, and due to their mechanical flexibility have the potential for use in applications not possible for more traditional types of solar cells. The performance of polymer solar cells depends strongly on the distribution of electron donor and acceptor material in the active layer. LÄS MER