www.uhasselt.be
DSpace

Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/11869

Title: Solid-State NMR as a Tool to Describe and Quantify the Morphology of Photoactive Layers Used in Plastic Solar Cells
Authors: MENS, Raoul
BERTHO, Sabine
CHAMBON, Sylvain
D'HAEN, Jan
LUTSEN, Laurence
MANCA, Jean
GELAN, Jan
VANDERZANDE, Dirk
ADRIAENSENS, Peter
Issue Date: 2011
Publisher: WILEY-BLACKWELL
Citation: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 49(7). p. 1699-1707
Abstract: The optimization and control of the nanomorphology of thin films used as active layer in bulk heterojunction (BHJ) plastic solar cells is of key importance for a better understanding of the photovoltaic mechanisms and for increasing the device performances. Hereto, solid-state NMR relaxation experiments have been evaluated to describe the film morphology of one of the "work-horse'' systems poly(2-methoxy- 5-(3',7'-dimethyloctyloxy)-1,4-phenylene-vinylene)/[6, 6]-phenyl-C(61)butyric acid methyl ester (MDMO-PPV/PCBM) in a quantitative way. Attention is focused on the influence of the processing solvent (toluene vs. chlorobenzene), the blend composition, and the casting technique, that is, spin coating versus doctor blading. It is demonstrated that independently of the solvent and casting technique, part of the PCBM becomes phase separated from the mixed phase. Whereas casting from toluene results in the development of well-defined PCBM crystallites, casting from chlorobenzene leads to the formation of PCBM-rich domains that contain substructures of weakly organized PCBM nanoclusters. The amount and physico-chemical state of the phase separated PCBM is quantified by solid-state NMR relaxation times experiments. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 1699-1707, 2011
Notes: [Mens, Raoul; Bertho, Sabine; Chambon, Sylvain; D'Haen, Jan; Manca, Jean; Gelan, Jan; Vanderzande, Dirk; Adriaensens, Peter] Hasselt Univ, Inst Mat Res IMO, Div Chem, B-3590 Diepenbeek, Belgium. [Lutsen, Laurence; Manca, Jean; Vanderzande, Dirk] IMEC VZW, B-3001 Louvain, Belgium. peter.adriaensens@uhasselt.be
URI: http://hdl.handle.net/1942/11869
DOI: 10.1002/pola.24600
ISI #: 000288517400021
ISSN: 0887-624X
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
published version268.59 kBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.