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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 | Source: | 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. | Keywords: | Organic solar cells; Nanofibers; Transmission electron microscopy | Document URI: | http://hdl.handle.net/1942/10014 | ISSN: | 1566-1199 | e-ISSN: | 1878-5530 | DOI: | 10.1016/j.orgel.2009.06.018 | ISI #: | 000270636800008 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2010 |
Appears in Collections: | Research publications |
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