Effect of Molecular Orientation on Photovoltaic Efficiency and Carrier Transport in a New Semiconducting Polymer

• Authors: V. Kažukauskas , M. Pranaitis , C. Sentein , L. Rocha , P. Raimond , I. Duyssens , I. Van Severen , L. Lutsen , T. Cleij , D. Vanderzande
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

73.50.-h; 81.40.Rs; 81.40.Tv; 73.61.Ph

Discipline

• 73.50.-h: Electronic transport phenomena in thin films(for electronic transport in mesoscopic systems, see 73.23.-b; see also 73.40.-c Electronic transport in interface structures; for electronic transport in nanoscale materials and structures, see 73.63.-b)
• 81.40.Rs: Electrical and magnetic properties related to treatment conditions
• 73.61.Ph: Polymers; organic compounds
• 81.40.Tv: Optical and dielectric properties related to treatment conditions

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 3
• Pages: 1009-1012

Dates

published

2008-03

received

2007-08-26

Contributors

author

V. Kažukauskas

• Department of Semiconductor Physics, and Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 9, bldg. 3, LT-10222 Vilnius, Lithuania

author

M. Pranaitis

• Department of Semiconductor Physics, and Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 9, bldg. 3, LT-10222 Vilnius, Lithuania

author

C. Sentein

• DRT-LITEN-DTS-LCS, at.451, CEA Saclay, F-91191 Gif-sur-Yvette, France

author

L. Rocha

• DRT-LITEN-DTS-LCS, at.451, CEA Saclay, F-91191 Gif-sur-Yvette, France

author

P. Raimond

• DRT-LITEN-DTS-LCS, at.451, CEA Saclay, F-91191 Gif-sur-Yvette, France

author

I. Duyssens

• IMEC-IMOMEC Division, Wetenschapspark 1, B-3590 Diepenbeek, Belgium

author

I. Van Severen

• IMEC-IMOMEC Division, Wetenschapspark 1, B-3590 Diepenbeek, Belgium

author

L. Lutsen

• IMEC-IMOMEC Division, Wetenschapspark 1, B-3590 Diepenbeek, Belgium

author

T. Cleij

• Hasselt University, Agoralaan 1, SBG/OS department, B-3590 Diepenbeek, Belgium

author

D. Vanderzande

• IMEC-IMOMEC Division, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
• Hasselt University, Agoralaan 1, SBG/OS department, B-3590 Diepenbeek, Belgium

References

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• 4. V. Kažukauskas, V.Čyras, M. Pranaitis, A. Apostoluk, L. Rocha, L. Sicot, P. Raimond, C. Sentein, Org. Electron. 8, 21 (2007)
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Identifiers

DOI

10.12693/APhysPolA.113.1009