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

Gärtner, Stefan; Christmann, Marco; Sankaran, Sivaramakrishnan; Röhm, Holger; Prinz, Eva-Marie; Penth, Felix; Pütz, Andreas; Türeli, Akif Emre et al. · Adv Mater · 2014

basic_science · Level V

Where this comes from

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.