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

6th International Symposium on Engineering Plastics, Xiamen, China, August 2013 - Using fullerene as a comonomer for organic photovoltaic applications

Using fullerene as a comonomer for organic photovoltaic applications

Hugo Santos Silva,1 Hasina H. Ramanitra,1 Didier Bégué,2 Christine Dagron-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

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Oral Presentation at 6th International Symposium on Engineering Plastics, Xiamen, China, August 2013

http://eplab.iccas.ac.cn/ep2013/

The polymer chemistry of fullerene (C60) has rapidly developed due to a desire to combine its opto-electronic properties with the morphologies, strength, and process-enhanced features associated with polymers.[1]

         Typically, C60 is incorporated into organic photovoltaic devices (OPVs) as phenyl C61 butyric acid methyl ester (PCBM), but this material suffers from problems of stability due to excessive crystallisation in the solid-state.[2] The use of polymerised C60 would reduce this difficulty and enhance the mechanical properties of the opto-active layer in OPVs.

         The recently devised Atom Transfer Radical Addition Polymerisation (ATRAP) of C60 permits facile integration of C60 directly into the main-chain (Figure 1).[3]

This work gives a general review of the area and then focuses on the experimental and theoretical density functional theory (DFT) study of the modification of the electronic and morphological properties of fullerene in the example of poly[(1,4-fullerene)-alt-(1,4-dimethylene-2,5-dioctyloxyphenylene)] (PC60DOP).

Theoretical results show that ATRAP polymers have 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.

This work has received funding from the European Union Seventh Framework Programme (FP7/2011 under grant agreement ESTABLIS n° 290022).

 

 

Scheme: ATRAP reaction leading to PC60DOP, where R is octyl.

[1] (a) F. Giacalone, N. Martín, Chem Rev 2006, 106, 5136; (b) Fullerene Polymers: Synthesis, Properties and Applications’, Eds. N. Martín, F. Giacalone, Wiley-VCH, 2009.

[2] M. Campoy-Quiles, T. Ferenczi, T. Agostinelli, P. G. Etchegoin, Y. Kim, T. D. Anthopoulos, P. N. Stavrinou, D. D. C. Bradley, J. Nelson, Nat. Mater. 2008, 7, 158.

[3] (a) R. C. Hiorns, E. Cloutet, E. Ibarboure, L. Vignau, N. Lemaitre, S. Guillerez, C. Absalon, H. Cramail, Macromolecules 2009, 42, 3549; (b) R. C. Hiorns, E. Cloutet, E. Ibarboure, A. Khoukh, H. Bejbouji, L. Vignau, H. Cramail, Macromolecules 2010, 43, 6033; (c) R. C. Hiorns, P. Iratçabal, D. Bégué, A. Khoukh, R. de Bettignies, J. Leroy, M. Firon, C. Sentein, H. Martinez, H. Preud'homme, C. Dagron-Lartigau, J. Polym. Sci. Pt A Polym. Chem. 2009, 47, 2304.