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Title: Fullerene-grafted block copolymers used as compatibilizer in P3HT/PCBM bulk heterojunctions: morphology and photovoltaic performances
Keywords: Physical Sciences
Issue Date: 1-Dec-2011
Publisher: EDP Sciences
Abstract: Abstract The nanostructure of the active layer in polymer/fullerene bulk heterojunction solar cells is known to have a strong impact on the device performances. Controlling the polymer/fullerene blend morphology is therefore particularly important. In this work, a rod-coil block copolymer, based on a regioregular poly(3-hexylthiophene) electron-donor rod block and a C60-grafted coil block, is used as compatibilizer and its influences on the thin film morphology as well as the photovoltaic performances are investigated. It is shown that a small fraction of compatibilizer can enhance the device performances in an otherwise non-optimized process. At higher fractions or long annealing times however, the fullerene-grafted copolymer is found to behave as a nucleation center and triggers the formation of fullerene crystals.
ISSN: 1286-0042 (pISSN)
1286-0050 (eISSN)
1286-0042 (ISSN)
DOI: 10.1051/epjap/2011110150
Rights: © EDP Sciences, 2011
EDP Sciences, 2011
Affiliation: 23 rue du Loess - 67037 - Strasbourg - FRANCE (Gernigon, V.)
23 rue du Loess - 67037 - Strasbourg - FRANCE (Lévêque, P.)
16 avenue Pey-Berland - Pessac - FRANCE (Brochon, C.)
41 rue du Brill - 4422 - Belvaux - LUXEMBOURG (Audinot, J.-N.)
25 rue Becquerel - 67087 - Strasbourg - FRANCE (Leclerc, N.)
23 rue du Loess - 67037 - Strasbourg - FRANCE (Bechara, R.)
25 rue Becquerel - 67087 - Strasbourg - FRANCE (Richard, F.)
23 rue du Loess - 67037 - Strasbourg - FRANCE (Heiser, T.)
16 avenue Pey-Berland - Pessac - FRANCE (Hadziioannou, G.)
Appears in Collections:PEER Publications

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