Jump to main content
Jump to site search

Issue 32, 2014
Previous Article Next Article

Chlorine-free processed high performance organic solar cells

Author affiliations


The processing of polymer solar cells with non-halogenated solvents is highly desirable in order to achieve an environmentally friendly, sustainable large-scale fabrication of organic photovoltaics. This work demonstrates device processing free of chlorinated solvents yielding high-performance polymer:fullerene bulk-heterojunction solar cells comprising a conjugated polymer poly{[4,8-bis-(2-ethyl-hexyl-thiophene-5-yl)-benzo[1,2-b:4,5-b0]dithiophene-2,6-diyl]-alt-[2-(20-ethyl-hexanoyl)-thieno[3,4-b]thiophen-4,6-diyl]} (PBDTTT-CT) and a fullerene derivative [6,6]-phenyl-C70-butyric acid methyl ester (PC70BM). As compared to chlorobenzene/ortho-dichlorobenzene cast devices the overall solar cell performance could be improved from 6.71% up to 7.15% by using xylene-based solvent systems.

Graphical abstract: Chlorine-free processed high performance organic solar cells

Back to tab navigation

Publication details

The article was received on 28 Feb 2014, accepted on 26 Mar 2014 and first published on 26 Mar 2014

Article type: Paper
DOI: 10.1039/C4RA01783H
Citation: RSC Adv., 2014,4, 16681-16685
  •   Request permissions

    Chlorine-free processed high performance organic solar cells

    O. Synooka, K.-R. Eberhardt and H. Hoppe, RSC Adv., 2014, 4, 16681
    DOI: 10.1039/C4RA01783H

Search articles by author