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http://hdl.handle.net/1942/2013
Title: | Optical and EPR spectroscopy in pure and blended films of a novel low band gap polymer | Authors: | AGUIRRE, Aranzazu Janssen, G Goovaerts, E COLLADET, Kristof VANDERZANDE, Dirk LUTSEN, Laurence |
Issue Date: | 2006 | Publisher: | EDP SCIENCES S A | Source: | EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS, 36(3). p. 285-287 | Abstract: | Efficient charge transfer between a newly synthesized low band gap (LBG) conjugated polymer and the C-60 derivative PCBM is demonstrated. Spectral and time-resolved photoluminescence (PL) measurements show strong quenching and charge separation in the picosecond time range. The charge transfer is further confirmed by light-induced electron paramagnetic resonance (EPR) measurements of both the positive polarons and the fullerene radicals, which can be resolved in high-frequency EPR. The potential for the LBG polymer to act as acceptor was examined in blends with the para-phenylene-vinylene polymer MDMO-PPV. No charge transfer, but instead energy transfer from MDMO-PPV to LBG occurs in these blends, as shown by PL spectroscopy. | Notes: | Univ Antwerp VIB, Dept Phys, CDE, B-2610 Antwerp, Belgium. Hasselt Univ, Inst Mat Res, IMO, B-3590 Diepenbeek, Belgium. IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium.Aguirre, A, Univ Antwerp VIB, Dept Phys, CDE, Univ Plein 1, B-2610 Antwerp, Belgium.etienne.goovaerts@ua.ac.be | Document URI: | http://hdl.handle.net/1942/2013 | ISSN: | 1286-0042 | e-ISSN: | 1286-0050 | DOI: | 10.1051/epjap:2006143 | ISI #: | 000243397900015 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2008 |
Appears in Collections: | Research publications |
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