Enhanced thermal stability of a polymer solar cell blend induced by electron beam irradiation in the transmission electron microscope

Bäcke, Olof,1984Chalmers tekniska högskola,Chalmers University of Technology (författare)

We show by in situ microscopy that the effects of electron beam irradiation during transmission electron microscopy can be used to lock microstructural features and enhance the structural thermal stability of a nanostructured polymer:fullerene blend. Polymer:fullerene bulk-heterojunction thin films show great promise for use as active layers in organic solar cells but their low thermal stability is a hindrance. Lack of thermal stability complicates manufacturing and influences the lifetime of devices. To investigate how electron irradiation affects the thermal stability of polymer:fullerene films, a model bulk-heterojunction film based on a thiophene-quinoxaline copolymer and a fullerene derivative was heat-treated in-situ in a transmission electron microscope. In areas of the film that exposed to the electron beam the nanostructure of the film remained stable, while the nanostructure in areas not exposed to the electron beam underwent large phase separation and nucleation of fullerene crystals. UV–vis spectroscopy shows that the polymer:fullerene films are stable for electron doses up to 2000 kGy.

Lindqvist, Camilla,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)camillal (författare)
Diaz de Zerio Mendaza, Amaia,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)cerio (författare)
Gustafsson, Stefan,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)stefang (författare)
Wang, Ergang,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ergang (författare)
Andersson, Mats,1966Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matsand (författare)
Müller, Christian,1980Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)cmuller (författare)
Kristiansen, Per MagnusPaul Scherrer Institut,University of Applied Sciences Northwestern Switzerland, School of Enginnering (författare)
Olsson, Eva,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f10eva (författare)
Chalmers tekniska högskolaPaul Scherrer Institut (creator_code:org_t)

Av författaren/redakt...: Bäcke, Olof, 198 ...; Lindqvist, Camil ...; Diaz de Zerio Me ...; Gustafsson, Stef ...; Wang, Ergang, 19 ...; Andersson, Mats, ...; visa fler...; Müller, Christia ...; Kristiansen, Per ...; Olsson, Eva, 196 ...; visa färre...

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