Complexation of pyrrolidinofullerenes and zinc-phthalocyanine in a bilayer organic solar cell structure

Robert Koeppe, N. Serdar Sariciftci, Pavel A. Troshin, Rimma N. Lyubovskaya

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66 Citations (Scopus)

Abstract

Bilayer organic solar cells were prepared using zinc-phthalocyanine (ZnPc) and a novel, highly soluble pyrollidinofullerene bearing three chelating pyridyl groups (PyF). The formation of supramolecular complexes between the two compounds is indicated by a significantly increased solubility of ZnPc in dichloromethane upon addition of the PyF. Spin-coating a film of PyF on a vacuum-evaporated film of ZnPc results in a solar cell yielding short circuit current (Isc) densities of 3 mA cm2 and open-circuit voltages (Voc) of about 0. 4 V under 100 mW cm2 simulated AM1.5 illumination. Solar cells prepared by substituting the PyF with a fullerene derivative forming no complexes with ZnPc show significantly lower photovoltaic conversion efficiencies.

Original languageEnglish
Article number244102
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number24
DOIs
Publication statusPublished - 2005
Externally publishedYes

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