Share Email Print
cover

Proceedings Paper

Impact of light on organic solar cells: evolution of the chemical structure, morphology, and photophysical properties of the active layer
Author(s): Agnès Rivaton; Sylvain Chambon; Matthieu Manceau; Jean-Luc Gardette; Muriel Firon; Noëlla Lemaître; Stéphane Guillerez; Stéphane Cros
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Organic photovoltaic represents an emerging technology thanks to its ability to give flexible, light weight and large-area devices, with low production cost by simple solution process or printing technologies. But these devices are known to exhibit low resistance to the combined action of sunlight, oxygen and water. This paper is focused on the behaviour of the active layer of the devices under illumination in the presence and absence of oxygen. The monitoring of the evolution of the chemical structure of MDMO-PPV submitted to accelerated artificial ageing permitted the elucidation of the mechanisms by which the polymer degrades. Extrapolation of the data to natural ageing suggested that, if well protected from oxygen (encapsulation), MDMO-PPV:PCBM based active layer is photochemically stable for several years in use conditions. In addition the charge transfer between the two materials was observed to remain efficient under exposure. The study of P3HT:PCBM blends allowed to point out the Achilles heel of P3HT towards the impact of light. In addition, P3HT:PCBM blends were shown to be much more stable under illumination than MDMO:PCBM blends. Preliminary results devoted to the AFM monitoring of the morphological modifications of P3HT:PCBM blends under the impact of light are also reported.

Paper Details

Date Published: 8 May 2008
PDF: 12 pages
Proc. SPIE 7002, Photonics for Solar Energy Systems II, 70020I (8 May 2008); doi: 10.1117/12.780564
Show Author Affiliations
Agnès Rivaton, Lab. de Photochimie Moléculaire et Macromoléculaire, Univ. Blaise Pascal (France)
Sylvain Chambon, Lab. de Photochimie Moléculaire et Macromoléculaire, Univ. Blaise Pascal (France)
Matthieu Manceau, Lab. de Photochimie Moléculaire et Macromoléculaire, Univ. Blaise Pascal (France)
Institut National de l'Energie Solaire, CEA, Lab. Composants Solaires (France)
Jean-Luc Gardette, Lab. de Photochimie Moléculaire et Macromoléculaire, Univ. Blaise Pascal (France)
Muriel Firon, Institut National de l'Energie Solaire, CEA, Lab. Composants Solaires (France)
Noëlla Lemaître, Institut National de l'Energie Solaire, CEA, Lab. Composants Solaires (France)
Stéphane Guillerez, Institut National de l'Energie Solaire, CEA, Lab. Composants Solaires (France)
Stéphane Cros, Institut National de l'Energie Solaire, CEA, Lab. Composants Solaires (France)


Published in SPIE Proceedings Vol. 7002:
Photonics for Solar Energy Systems II
Andreas Gombert, Editor(s)

© SPIE. Terms of Use
Back to Top