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Charge separation and recombination in self-organizing nanostructured donor-acceptor block copolymer films

Title data

King, Simon ; Sommer, Michael ; Hüttner, Sven ; Thelakkat, Mukundan ; Haque, Saif A.:
Charge separation and recombination in self-organizing nanostructured donor-acceptor block copolymer films.
In: Journal of Materials Chemistry. Vol. 19 (June 2009) Issue 30 . - pp. 5436-5441.
ISSN 0959-9428
DOI: https://doi.org/10.1039/B905708K

Official URL: Volltext

Abstract in another language

A series of donor-acceptor diblock copolymers with varying molecular weight are studied in thin film and compared with an 'equivalent' blend formed from donor and acceptor homopolymers. Steady-state and transient spectroscopies are used to demonstrate a correlation between low molecular weight block copolymers and increased photoluminescence quenching (up to 99) leading to higher yields of long-lived free charges. Such block copolymers are shown, by electron microscopy, to exhibit phase-segregated micrdomains whose size and periodicity are determined by their molecular weight. Photovoltaic devices made using these materials show a peak efficiency of 0.11 and correlate with our spectroscopic results, subject to a trade-off between charge generation and tranpsort/collection.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Professur Makromolekulare Chemie I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Junior Professorship Solar Energy > Junior Professorship Solar Energy - Juniorprof. Dr. Sven Hüttner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Junior Professorship Solar Energy
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 12 Jan 2018 10:09
Last Modified: 12 Jan 2018 10:09
URI: https://eref.uni-bayreuth.de/id/eprint/41709