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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/15965

Title: Influence of fullerene photodimerization on the PCBM crystallization in polymer: Fullerene bulk heterojunctions under thermal stress
Authors: Piersimoni, Fortunato
Degutis, Giedrius
Bertho, Sabine
Vandewal, Koen
Spoltore, Donato
Vangerven, Tim
Drijkoningen, Jeroen
Van Bael, Marlies K.
Hardy, An
D'Haen, Jan
Maes, Wouter
Vanderzande, Dirk
Nesladek, Milos
Manca, Jean
Issue Date: 2013
Citation: JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 51 (16), p. 1209-1214
Abstract: For an increased lifetime of polymer:fullerene bulk heterojunction (BHJ) solar cells, an understanding of the chemical and morphological degradation phenomena taking place under operational conditions is crucial. Phase separation between polymer and fullerene induced by thermal stress has been pointed out as a major issue to overcome. While often the effect of thermal stress on the morphology of polymer:fullerene BHJ is investigated in the darkness, here we observe that light exposure slows down fullerene crystallization and phase separation induced at elevated temperatures. The observed photo-stabilizing effect on active layer morphology is quite independent on the polymer and is attributed to light-induced dimerization of the fullerene. (c) 2013 Wiley Periodicals, Inc.
URI: http://hdl.handle.net/1942/15965
DOI: 10.1002/polb.23330
ISI #: 000325891000003
ISSN: 0887-6266
Category: A1
Type: Journal Contribution
Validation: ecoom, 2014
Appears in Collections: Research publications

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