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Characterisation of vertical phase separation in polymer: fullerene blend films for photovoltaics by dSIMS and NEXAFS
Karlstads universitet, Fakulteten för teknik- och naturvetenskap, Avdelningen för fysik och elektroteknik. Karlstads universitet, Fakulteten för teknik- och naturvetenskap, Materialvetenskap. (Materialfysik)
Karlstads universitet, Fakulteten för teknik- och naturvetenskap, Avdelningen för fysik och elektroteknik. (Materialvetenskap)
M. Smoluchowski Insitute of Physics, Jagiellonian University, Reymonta 4, Krakow 30–059, Poland.
Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Al. Mickiewicza 30, Krakow 30–059, Poland.
Vise andre og tillknytning
2011 (engelsk)Inngår i: E-MRS 2011 Spring Meeting: Bilateral Energy Conference, Malden, MA: John Wiley & Sons, 2011, s. 62-63Konferansepaper, Oral presentation with published abstract (Fagfellevurdert)
Abstract [en]

Morphological control and characterization of blend films is key in the development of viable polymer solar cells. Spontaneous formation of vertical compositional gradients during solution processing has been shown for polyfluorene:PCBM blends and rationalized with thermodynamic and kinetic models of nucleation and spinodal decomposition.[1, 2] The extent of vertical stratification is affected by polymer side-chain modification aimed at controlling polymer:fullerene miscibility.[3] Here we present high-resolution film morphology results for several polymer:fullerene systems as obtained from near-edge X-ray fine structure spectroscopy (NEXAFS) in partial and in total electron yield modes. Blend films were found to be polymer- enriched at the surface. Dynamic secondary ion mass spectrometry (dSIMS) and NEXAFS give compositional information at different depths, resulting in a more complete picture of the film morphology.

 

sted, utgiver, år, opplag, sider
Malden, MA: John Wiley & Sons, 2011. s. 62-63
HSV kategori
Forskningsprogram
Fysik; Materialvetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-15768OAI: oai:DiVA.org:kau-15768DiVA, id: diva2:571788
Konferanse
E-MRS 2011 Spring Meeting, Bilateral Energy Conference, Acropolis Congress Center, Nice, France, May 9-13, 2011
Forskningsfinansiär
Swedish Research Council, 2010-4155Tilgjengelig fra: 2012-11-23 Laget: 2012-11-23 Sist oppdatert: 2019-05-20bibliografisk kontrollert

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http://www.emrs-strasbourg.com/files/USB%2011/symposium_n.pdf

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Anselmo, Ana SofiaDzwilewski, Andrzejvan Stam, JanSvensson, KristerMoons, Ellen

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