Sökning: "fullerene blend"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden fullerene blend.

1. 1. The morphology of polyfluorene : fullerene blend films for photovoltaic applications

   Författare :Ana Sofia Anselmo; Håkan Rensmo; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials Science; Organic Photovoltaics; Polymer Solar Cells; Materialteknik; Materials Engineering;

   Sammanfattning : Polymer photovoltaic systems whose photoactive layer is a blend of a semiconducting polymer with a fullerene derivative in a bulk heterojunction configuration are amongst the most successful organic photovoltaic devices nowadays. The three-dimensional organization in these layers (the morphology) plays a crucial role in the performance of the devices. LÄS MER

3. 2. Fabricating designed fullerene nanostructures for functional electronic devices

   Författare :Christian Larsen; Ludvig Edman; René Janssen; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Organic electronics; Organic field-effect transistor; Organic photovoltaics; Fullerene C60; PCBM; Photochemical transformation; Resist-free lithography; C60 Nanorod; Solution processable; nanomaterials; nanomaterial; Physical Chemistry; fysikalisk kemi; fysik; Physics; Materials Science; materialvetenskap;

   Sammanfattning : A long-term goal within the field of organic electronics has been to developflexible and functional devices, which can be processed and patterned withlow-cost and energy-efficient solution-based methods. This thesis presents anumber of functional paths towards the attainment of this goal via thedevelopment and demonstration of novel fabrication and patterningmethods involving the important organic-semiconductor family termedfullerenes. LÄS MER

4. 3. Morphology and material stability in polymer solar cells

   Författare :Rickard Hansson; Ellen Moons; Andreas Opitz; Mats Fahlman; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 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

5. 4. Materials aspects in spin-coated films for polymer photovoltaics

   Författare :Ana Sofia Anselmo; Ellen Moons; Krister Svensson; Jan van Stam; Paul Dastoor; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; materials science; photovoltaics; conjugated polymer; polymer solar cell; bulk heterojunction; coating; morphology; fullerene; photostability; degradation; X-ray absorption spectroscopy; synchroton-based techniques; Materialvetenskap; Materialvetenskap;

   Sammanfattning : Polymer-based photovoltaics have the potential to contribute to boosting photovoltaic energy conversion overall. Besides allowing large-area inexpensive processing, polymeric materials have the added benefit of opening new market applications for photovoltaics due to their low-weight and interesting mechanical properties. LÄS MER

7. 5. Photo-polymerization as a tool for engineering the active material in organic field-effect transistors

   Författare :Andrzej Dzwilewski; Ludvig Edman; Xavier Crispin; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Field-effect transistor; photo-polymerization; PCBM; C60; Fullerene; Physics; Fysik; fasta tillståndets fysik; Solid State Physics;

   Sammanfattning : The emergence of organic semiconductors is exciting since it promises to open up for straightforward and low-cost fabrication of a wide range of efficient and novel electronic devices. However, in order for this promise to become reality it is critical that new and functional fabrication techniques are developed. LÄS MER