Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/8348
Title: Effect of the controllable molecular ordering in a new polymer on carrier transport and photovoltaic properties
Authors: Kazukauskas, V.
Pranaitis, M.
Sentein, C.
Rocha, L.
Raimond, P.
DUYSSENS, Iris 
VAN SEVEREN, Ineke 
CLEIJ, Thomas 
Lutsen, L
VANDERZANDE, Dirk 
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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