About Establis

Earth receives enough sunlight in one hour to satisfy all human needs in a year. Using solar energy will reduce harmful CO2 emissions and resolve the forthcoming energy deficit. The market for stable, mass-produced Organic Solar Cells is estimated at one billion Euros by 2016.

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ESTABLIS will train a team of 11 PhDs and 4 Postdocs to become the scientific leaders in industry and academia. ESTABLIS Fellows will excel.

Research on organic solar cells

Complementarity is at the heart of Establis. To develop Organic Solar Cells requires a concerted combination of physical, synthetic and modelling capabilities. Establis members are working together–across preconceived scientific boundaries–to accelerate the production of Organic Solar Cells.

Partnerships & collaborations

Our Industrial Partners and Associate Partners ensure that the training and technology is economically feasible.

EU support

The EEC is constructively investing more than 3.9 M€ in Establis to train, research and collaborate at the highest international level and ensure our energy platform for the 21st century.

Scientific results

Matériaux et Nanostructures π-Conjugués (MNPC13) - Polyfullerenes as alternative n-type materials with improved morphological properties for bulk-heterojunction solar cells


Polyfullerenes as alternative n-type materials with improved morphological properties for bulk-heterojunction solar cells

Hugo Santos Silva,1 Hasina H. Ramanitra,1 Didier Bégué,2 Christine D. Lartigau,1 and Roger C. Hiorns3

 

1EPCP, IPREM (UMR-5254), Université de Pau et des Pays de l’Adour, 2 avenue du Président Angot, 64053 Pau, Cedex, France

2ECP, IPREM (UMR-5254), Université de Pau et des Pays de l’Adour, 2 avenue du Président Angot, 64053 Pau, Cedex, France

3CNRS, EPCP, IPREM (UMR-5254), 2 avenue du Président Angot, 64053 Pau, Cedex, France

 

Poster presented at Matériaux et Nanostructures π-Conjugués (MNPC13)

http://mnpc2013.sciencesconf.org/

Consistent with recent developments in fullerene polymer chemistry1,2 this work reports an experimental and theoretical (ground and time-dependent) density functional theory (DFT) based-study on the modification of the electronic and morphological properties of fullerenes by incorporating them directly into the backbone of polymer chains. The chemistry used is shown below and is based on the recently discovered atom transfer radical addition polymerization (ATRAP). Several molecules can be proposed and, in this work, we concentrate the study on the synthesis and characterization of poly[(1,4-fullerene)-alt-(1,4-dimethylene-2,5-dioctyloxyphenylene)] (PC60DOP).

The theoretical results predicted, using a combination of density functional approaches (ground and excited states; local or long-range corrected exchange-correlation functional), that the electronic properties of PC60DOP are similar to those observed for phenyl-C61-butyric acid methyl ester (PCBM), a widely used and flagship acceptor in organic photovoltaics. This implies that ATRAP allows materials to be made with well-placed electronic properties, similar to those of PCBM, while simultaneously accessing the benefits of polymers i.e., increasing mechanical strengths, improving morphological control, and limiting the detrimental self-aggregation phenomenon commonly associated with PCBM.

1R. C. Hiorns, E. Cloutet, E. Ibarboure, L. Vignau, N. Lemaitre, S. Guillerez, C. Absalon, H. Cramail, Macromolecules 2009, 42, 3549-3558.

2R. C. Hiorns, E. Cloutet, E. Ibarboure, A. Khoukh, H. Bejbouji, L. Vignau, H. Cramail, Macromolecules 2010, 43, 6033-6044.

 

MNPC13 ESR1 Hugo Santos Silva