Origin of the efficiency enhancement in ferroelectric functionalized organic solar cells

Kamal Asadi; Paul De Bruyn; Paul W.M. Blom; Dago M. De Leeuw

doi:10.1063/1.3587630

Origin of the efficiency enhancement in ferroelectric functionalized organic solar cells

Kamal Asadi, Paul De Bruyn, Paul W.M. Blom, Dago M. De Leeuw

Department of Physics

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

We have investigated the efficiency enhancement of organic solar cells upon incorporation of a thin ferroelectric polymer layer. For non-Ohmic contacts the enhancement is due to an increased open circuit voltage, which is, however, independent of the ferroelectric polarization direction. Ferroelectricity cannot play a role due to depolarization and charge compensation. The same improvement is also obtained with a non-ferroelectric fluorinated polymer. The data unambiguously show that the improved efficiency is solely due to improvement of the cathode. The fluorinated polymer layer plays the role of LiF in an optimized solar cell.

Original language	English
Article number	183301
Journal	Applied Physics Letters
Volume	98
Issue number	18
DOIs	https://doi.org/10.1063/1.3587630
Publication status	Published - 2 May 2011

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3587630

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