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Title: | Evidence of the improvement of photovoltaic efficiency by polar molecule orientation in a new semiconducting polymer | Authors: | Sentein, Carole Rocha, Licinio Apostoluk, Aleksandra Raimond, Paul DUYSSENS, Iris VAN SEVEREN, Ineke CLEIJ, Thomas LUTSEN, Laurence VANDERZANDE, Dirk Kaukauskas, Vaidotas Pranaitis, Mindaugas Cyras, Valius |
Issue Date: | 2007 | Publisher: | ELSEVIER SCIENCE BV | Source: | SOLAR ENERGY MATERIALS AND SOLAR CELLS, 91(19). p. 1816-1824 | Abstract: | Storage of an internal field in a polymeric semiconductor device should be of great interest for applications like photovoltaic solar cells to facilitate exciton dissociation and improve charge transport in the structure. Orientation of polar molecules, contained inside a polymer binder, induces a rectifying effect, behaving as a distributed homojunction within a single polymeric film. To investigate this concept, a new poly(p-phenylenevinylene) (PPV) derivative bearing push-pull like molecules was purposefully designed and synthesized. Effect of polar molecules' orientation on carrier injection and transport properties was studied. In the test systems, we demonstrate an increase of the external quantum efficiency upon orientation. (c) 2007 Elsevier B.V. All rights reserved. | Notes: | CEA Saclay, DEN DMN SRMA LTMEX, F-91191 Gif Sur Yvette, France. IMEC, IMOMEC Div, B-3590 Diepenbeek, Belgium. Hasselt Univ, SBG OS Dept, B-3590 Diepenbeek, Belgium. Vilnius Univ, Semicond Phys Dept, LT-10222 Vilnius, Lithuania. Vilnius Univ, Inst Mat Sci & Appl Res, LT-10222 Vilnius, Lithuania.Sentein, C, CEA Saclay, DEN DMN SRMA LTMEX, F-91191 Gif Sur Yvette, France.carole.sentein@cea.fr | Keywords: | organic solar cells; polymer semiconductors; molecular chain orientation; carrier transport | Document URI: | http://hdl.handle.net/1942/4159 | ISSN: | 0927-0248 | e-ISSN: | 1879-3398 | DOI: | 10.1016/j.solmat.2007.06.012 | ISI #: | 000250272300008 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2008 |
Appears in Collections: | Research publications |
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