Eco-friendly fabrication of 4% efficient organic solar cells from surfactant-free P3HT:ICBA nanoparticle dispersions

Stefan Gärtner; Marco Christmann; Sivaramakrishnan Sankaran; Holger Röhm; Eva-Marie Prinz; Felix Penth; Andreas Pütz; Akif Emre Türeli; Bernd Penth; Bernd Baumstümmler; Alexander Colsmann

doi:10.1002/adma.201402360

Eco-friendly fabrication of 4% efficient organic solar cells from surfactant-free P3HT:ICBA nanoparticle dispersions

Adv Mater. 2014 Oct;26(38):6653-7. doi: 10.1002/adma.201402360. Epub 2014 Sep 3.

Authors

Stefan Gärtner¹, Marco Christmann, Sivaramakrishnan Sankaran, Holger Röhm, Eva-Marie Prinz, Felix Penth, Andreas Pütz, Akif Emre Türeli, Bernd Penth, Bernd Baumstümmler, Alexander Colsmann

Affiliation

¹ Light Technology Institute, Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany.

PMID: 25186115
DOI: 10.1002/adma.201402360

Abstract

Photo-active layers from non-stabilized P3HT:ICBA nanoparticles enable the fabrication of inverted organic solar cells from eco-friendly, alcoholic dispersions. Exhibiting power conversion efficiencies (PCEs) ≈4%, the devices are competitive to state-of-the-art P3HT:ICBA solar cells from chlorinated solvents. Upon thermal annealing, the short circuit current density and consequently the PCE of the inverted solar cells improve radically due to a more intimate contact of the nanoparticles and hence an enhanced charge carrier extraction.

Keywords: conjugated polymer; environmentally friendly solvent; organic solar cell; polymer nanoparticle; solution processing.

Publication types

Research Support, Non-U.S. Gov't