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|Title:||Effect of the controllable molecular ordering in a new polymer on carrier transport and photovoltaic properties||Authors:||Kazukauskas, V.
VAN SEVEREN, Ineke
|Issue Date:||2008||Publisher:||TAYLOR & FRANCIS LTD||Source:||MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 484. p. 728-738||Abstract:||The functionalized soluble poly(p-phenylene uinylene) derivative bearing polar molecules (NLO-PPV) was designed and synthesized to investigate effects of molecular orientation in single-layer polymer photovoltaic devices. The active molecule is the 4-(N-butyl-N-2-hydroxyethy1)-1-nitro-benzene group on the copolymer. The grafting of the molecule with a donor/transmitter/acceptor structure, possessing a large ground state dipole moment, enables their orientation by a DC-electric field. An internal electric field in such layer facilitates exciton dissociation and improves charge transport. We report increase of the external quantum efficiency by a factor of 1.5 to 2 upon orientation. The associated effects on the carrier injection and transport depending on the orientation direction 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. IMEC, IMOMEC, Diepenbeek, Belgium. Hasselt Univ, Diepenbeek, Belgium.||Keywords:||energy conversion efficiency; molecular orientation; optical and electrical properties; polymers||Document URI:||http://hdl.handle.net/1942/8348||ISSN:||1542-1406||e-ISSN:||1563-5287||ISI #:||000256185800032||Category:||A1||Type:||Journal Contribution||Validations:||ecoom 2009|
|Appears in Collections:||Research publications|
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