Fluorinated carbon nanotubes as nonvolatile additive to the energetic layer of polymer/fullerene photo voltaic cells: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0

Summary

Extremely dispersed fluorinated SWCNTs of submicron size had been ready, characterised and examined as nonvolatile additive to the energetic layer of polymer/fullerene natural photo voltaic cells. Two kinds of preliminary SWCNT supplies – TUBALL® (OCSiAl) and Tremendous purified plasma tubes (Nanointegris Inc.) – had been used. The absence of massive CNT aggregates was revealed by atomic power microscopy. The absence of metallic SWCNTs is confirmed by optical spectra of fluorinated SWCNT dispersions. Reproducible improve of the primary efficiency parameters of photo voltaic cells (quick circuit present, open circuit voltage, fill issue and energy conversion effectivity) was obtained upon admixing a small quantity of fluorinated SWCNTs (lower than 1% weight) into the polymer/fullerene energetic layer, with both P3HT or PCDTBT donor and both PC₆₀BM or PC₇₀BM acceptor for each direct and inverted machine architectures. Since efficient cost mobility didn’t change upon fluorinated SWCNT admixture, the advance of photo voltaic cell efficiency just isn’t associated to SWCNT-induced modification of the digital construction of the energetic layer elements or cost switch through fluorinated SWCNTs. Presumably, the origin of this enhancements is geometric optimization of the energetic layer morphology (bettering connectivity of donor and acceptor domains) by fluorinated SWCNTs because of their excessive side ratio.