title: Eco-friendly fabrication of 4% efficient organic solar cells from surfactant-free P3HT:ICBA nanoparticle dispersions.
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.
authors.affiliation: Light Technology Institute, Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Gärtner
authors.forename: Marco
authors.initials: M
authors.lastname: Christmann
authors.forename: Sivaramakrishnan
authors.initials: S
authors.lastname: Sankaran
authors.forename: Holger
authors.initials: H
authors.lastname: Röhm
authors.forename: Eva-Marie
authors.initials: EM
authors.lastname: Prinz
authors.forename: Felix
authors.initials: F
authors.lastname: Penth
authors.forename: Andreas
authors.initials: A
authors.lastname: Pütz
authors.forename: Akif Emre
authors.initials: AE
authors.lastname: Türeli
authors.forename: Bernd
authors.initials: B
authors.lastname: Penth
authors.forename: Bernd
authors.initials: B
authors.lastname: Baumstümmler
authors.forename: Alexander
authors.initials: A
authors.lastname: Colsmann
keywords: conjugated polymer; environmentally friendly solvent; organic solar cell; polymer nanoparticle; solution processing