Sökning: "organic semiconductors"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden organic semiconductors.

  1. 1. Crystallographic Studies of Ternary Chalcogenides and Organic Semiconductors

    Författare :Céline Besnard; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phase equilibria; Kondenserade materiens egenskaper:struktur; egenskaper termiska och mekaniska ; kristallografi; fasjämvikt; crystallography; thermal and mechanical properties; Condensed matter:stucture; thiazine derivatives; quinoline derivatives; hexacene-quinone; substituted tetracene; rubrene derivatives; manganese telluride; organic semiconductors; niobium sulfide intercalation compounds; thiospinel;

    Sammanfattning : X-ray diffraction methods have been used to study the crystal structure of different compounds, both organic and inorganic. The inorganic compounds were all synthesized by solid state reactions. A new compound, Re4As6S3, was synthesized and its structure was solved by Rietveld methods. LÄS MER

  2. 2. Structure and morphology control of organic semiconductors for functional optoelectronic applications

    Författare :Jenny Enevold; Ludvig Edman; Thomas Wågberg; Christian Müller; Umeå universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Organic electronics; organic photonics; patterning; fullerene; polymerization; dimerization; spray-deposition; morphology; small molecule donor; high open-circuit voltage;

    Sammanfattning : The functionality and application of organic semiconductors are largely dependent on their constituent structure and morphology. This thesis presents a number of functional and novel approaches for the control and tuning of structural and morphological features of a variety of organic semiconductor materials, and also demonstrates that these approaches can be utilized for improved device operation of field-effect transistors, organic solar cells and light-emitting electrochemical cells. LÄS MER

  3. 3. Heterojunctions between zinc oxide nanostructures and organic semiconductor

    Författare :Amal Hansson (f.d. Wadeasa); Xavier Crispin; Dominique Vuillaume; Linköpings universitet; []
    Nyckelord :ZnO nanostructures; Organic semiconductors; LEDs; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Lighting is a big business, lighting consumes considerable amount of the electricity. These facts motivate for the search of new illumination technologies that are efficient. Semiconductor light emitting diodes (LEDs) have huge potential to replace the traditional primary incandescent lighting sources. LÄS MER

  4. 4. Switching Kinetics and Charge Transport in Organic Ferroelectrics

    Författare :Tim Cornelissen; Martijn Kemerink; Mats Fahlman; Kamal Asadi; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Organic Electronics; Ferroelectrics; Organic Ferroelectrics;

    Sammanfattning : The continued digitalization of our society means that more and more things are getting connected electronically. Since currently used inorganic electronics are not well suited for these new applications because of costs and environmental issues, organic electronics can play an important role here. LÄS MER

  5. 5. Design and Fabrication of Light-Emitting Electrochemical Cells

    Författare :Andreas Sandström; Ludvig Edman; Ronald Österbacka; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Light-emitting electrochemical cell; fabrication; organic semiconductors; organic electronics; ambient fabrication; roll-to-roll; fysik; Physics;

    Sammanfattning : Glödlampan, en gång symbolen för mänsklig uppfinningsförmåga, är idag på väg att försvinna. Lysdioder och lågenergilampor har istället tagit över då dessa har betydligt längre livstid och högre effektivitet. LÄS MER