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Perfluorinated Subphthalocyanine as a New Acceptor Material in a Small‐Molecule Bilayer Organic Solar Cell
Author(s) -
Gommans Hans,
Aernouts Tom,
Verreet Bregt,
Heremans Paul,
Medina Anaïs,
Claessens Christian G.,
Torres Tomas
Publication year - 2009
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200900524
Subject(s) - materials science , acceptor , sublimation (psychology) , organic solar cell , ellipsometry , solar cell , electron acceptor , bilayer , optoelectronics , photovoltaic system , open circuit voltage , photochemistry , thin film , nanotechnology , voltage , polymer , chemistry , psychology , ecology , physics , biochemistry , membrane , composite material , psychotherapist , biology , condensed matter physics , quantum mechanics
The complex refractive index of fluorinated subphthalocyanines (SubPcs) deposited by vacuum sublimation is determined by spectral ellipsometry. Their performance as acceptor material is characterized in a range of donor/acceptor heterojunctions in organic photovoltaic cells (OPVCs) by current–voltage measurements under 1 sun AM 1.5D simulated solar illumination and spectral response. Both electron and hole transfer between donor and acceptor materials is demonstrated. Power conversion efficiencies of 0.96% are found with an open‐circuit bias of 940 mV. Hence, it is shown that fluorinated SubPcs can be considered as an acceptor material in OPVCs with an absorption in the visible comparable to that of well‐known metallophthalocyanines.