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Title: | Effect of molecular orientation on photovoltaic efficiency and carrier transport in a new semiconducting polymer | Authors: | Kazukauskas, V Pranaitis, M Sentein, C Rocha, L Raimond, P DUYSSENS, Iris VAN SEVEREN, Ineke CLEIJ, Thomas LUTSEN, Laurence VANDERZANDE, Dirk |
Issue Date: | 2008 | Publisher: | POLISH ACAD SCIENCES INST PHYSICS | Source: | ACTA PHYSICA POLONICA A, 113(3). p. 1009-1012 | Abstract: | New functionalized soluble poly (p-phenylene vinylene) derivative bearing polar molecules was designed and synthesized in order to investigate effects of molecular orientation in polymer photovoltaic devices. The active polar molecule is the 4-(N-butyl-N-2-hydroxyethyl)-1- nitro-benzene group. The grafting of the push-pull molecule with a donor/transmitter/acceptor structure, possessing a large ground state dipole moment, enables the molecular orientation by a dc electric field. An internal electric field stored in such system facilitates exciton dissociation and improves charge transport in single-layer devices. In our systems an increase in the external quantum efficiency by a factor of about 1.5 to 2 is estimated. The associated effects of orientation on the carrier injection and transport properties were evidenced. | Notes: | Vilnius State Univ, Dept Semicond Phys, LT-10222 Vilnius, Lithuania. Vilnius State Univ, Inst Mat Sci & Appl Res, LT-10222 Vilnius, Lithuania. CEA Saclay, DRT LITEN DTS LCS, F-91191 Gif Sur Yvette, France. IMEC IMOMEC Div, B-3590 Diepenbeek, Belgium. Hasselt Univ, SBG OS Dept, B-3590 Diepenbeek, Belgium.Kazukauskas, V, Vilnius State Univ, Dept Semicond Phys, Sauletekio 9,Bldg 3, LT-10222 Vilnius, Lithuania.vaidotas.kazukauskas@ff.vu.lt | Document URI: | http://hdl.handle.net/1942/8230 | Link to publication/dataset: | http://przyrbwn.icm.edu.pl/APP/ABSTR/113/a113-3-50.html | ISSN: | 0587-4246 | e-ISSN: | 1898-794X | ISI #: | 000254351000050 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2009 |
Appears in Collections: | Research publications |
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