Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/4152
Title: Influence of thermal ageing on the stability of polymer bulk heterojunction solar cells
Authors: BERTHO, Sabine 
HAELDERMANS, Ilse 
SWINNEN, Ann 
MOONS, Wouter 
MARTENS, Tom 
LUTSEN, Laurence 
VANDERZANDE, Dirk 
MANCA, Jean 
Senes, Alessia
Bonfiglio, Annalisa
Issue Date: 2007
Publisher: ELSEVIER SCIENCE BV
Source: SOLAR ENERGY MATERIALS AND SOLAR CELLS, 91(5). p. 385-389
Abstract: A new approach is presented in order to improve the thermal stability of polymer: [6-6]-phenyl C-61 butyric acid methyl ester (PCBM) bulk heterojunction solar cells. The central idea in this approach is the use of a polymer with high glass transition temperature (T-g), well above the normal operating temperatures of the devices. In this paper, a PPV-derivative with a T-g of 150 degrees C was used as an electron donor and the thermal stability of the obtained solar cells was compared with solar cells based on the reference material poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) with a T-g of 45 degrees C. The use of the material with higher glass transition temperature resulted in a significant improvement of the thermal stability of the photovoltaic parameters. Furthermore, a systematic transmission electron microscope (TEM) study demonstrates that the better thermal stability of performance coincides with a more stable active layer morphology. Both improvements are attributed to the reduced free movement of the electron donor material (PCBM) within the active layer of the solar cell. (c) 2006 Elsevier B.V. All rights reserved.
Notes: Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. IMEC Vzw, Div IMOMEC, B-3590 Diepenbeek, Belgium. Univ Cagliari, Cagliari, Italy.Bertho, S, Hasselt Univ, Inst Mat Res, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.sabine.bertho@uhasselt.be
Keywords: organic photovoltaics; thermal stability; glass transition temperature
Document URI: http://hdl.handle.net/1942/4152
ISSN: 0927-0248
e-ISSN: 1879-3398
DOI: 10.1016/j.solmat.2006.10.008
ISI #: 000244517200004
Category: A1
Type: Journal Contribution
Validations: ecoom 2008
Appears in Collections:Research publications

Files in This Item:
File Description SizeFormat 
Thermal_ageing.pdfpostprint329.58 kBpdfView/Open
Show full item record

Google ScholarTM

Check

Altmetric


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