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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/10014

Title: Controlling the morphology of nanofiber-P3HT:PCBM blends for organic bulk heterojunction solar cells
Authors: BERTHO, Sabine
OOSTERBAAN, Wibren
VRINDTS, Veerle
D'HAEN, Jan
CLEIJ, Thomas
LUTSEN, Laurence
MANCA, Jean
VANDERZANDE, Dirk
Issue Date: 2009
Publisher: ELSEVIER SCIENCE BV
Citation: ORGANIC ELECTRONICS, 10(7). p. 1248-1251
Abstract: Within the field of organic bulk heterojunction solar cells, the morphology of the active layer has a key role in obtaining high power conversion efficiencies. P3HT nanofibers, obtained in highly concentrated solutions. are able to give controlled morphologies directly upon deposition. Since the solar cell efficiency of fiber solar cells depends on the fiber content of the casting solution, it is important to control this parameter. Here, we demonstrate an easy way to control the fiber content in the casting solution, i.e. changing the solution temperature. By using solution heating, the overall molecular weight of the polymer in the blend is kept constant, fiber isolation is not needed and the use of solvent mixtures is avoided. The obtained optimal power conversion efficiency is shown to be linked to the morphology of the active layer, which is studied with Transmission Electron Microscopy (TEM). (C) 2009 Elsevier B.V. All rights reserved.
Notes: [Bertho, Sabine; Oosterbaan, Wibren D.; D'Haen, Jan; Cleij, Thomas J.; Manca, Jean; Vanderzande, Dirk] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Vrindts, Veerle; Lutsen, Laurence; Manca, Jean; Vanderzande, Dirk] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/10014
DOI: 10.1016/j.orgel.2009.06.018
ISI #: 000270636800008
ISSN: 1566-1199
Category: A1
Type: Journal Contribution
Validation: ecoom, 2010
Appears in Collections: Research publications

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