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Measuring Reduced C60 Diffusion in Crosslinked Polymer Films by Optical Spectroscopy

Title data

Fischer, Florian ; Hahn, Tobias ; Bässler, Heinz ; Bauer, Irene ; Strohriegl, Peter ; Köhler, Anna:
Measuring Reduced C60 Diffusion in Crosslinked Polymer Films by Optical Spectroscopy.
In: Advanced Functional Materials. Vol. 24 (22 October 2014) Issue 39 . - pp. 6172-6177.
ISSN 1616-301X
DOI: https://doi.org/10.1002/adfm.201401153

Abstract in another language

The diffusion of fullerenes such as C60 and PCBM in organic semiconductors is a key factor in controlling the efficiency of organic solar cells, though it is challenging to measure and to control. A simple optical method based on photoluminescence quenching is developed to assess the diffusion of a quencher molecule such as C60 through a semiconducting polymer film, in this case made with the polymer polyfluorene. When the mobility of the polymer chains is reduced by chemical crosslinking, the diffusion coefficient of C60 can be reduced by up to three orders of magnitude.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: molecular diffusion;
organic semiconductors;
donor–acceptor system;
photoinitiated crosslinking
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 05 Feb 2015 08:27
Last Modified: 05 Feb 2015 08:27
URI: https://eref.uni-bayreuth.de/id/eprint/6241