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Fluorinated Zinc Phthalocyanine as Donor for Efficient Vacuum‐Deposited Organic Solar Cells
Author(s) -
Meiss Jan,
Merten Andre,
Hein Moritz,
Schuenemann Christoph,
Schäfer Stefan,
Tietze Max,
Uhrich Christian,
Pfeiffer Martin,
Leo Karl,
Riede Moritz
Publication year - 2012
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.201101799
Subject(s) - materials science , phthalocyanine , organic solar cell , energy conversion efficiency , heterojunction , polymer solar cell , zinc , electron donor , open circuit voltage , hybrid solar cell , fullerene , electron acceptor , substrate (aquarium) , optoelectronics , solar cell , acceptor , short circuit , photochemistry , nanotechnology , voltage , organic chemistry , catalysis , chemistry , physics , quantum mechanics , oceanography , condensed matter physics , geology , metallurgy , composite material , polymer
Efficient single bulk heterojunction organic solar cells based on blends of a fluorinated zinc phthalocyanine as electron donor and fullerene C 60 as electron acceptor are reported. In comparison to the commonly used absorber zinc phthalocyanine, the fluorination of the molecule to F 4 ZnPc leads to an increase in ionisation potential and subsequently to an improvement of about 170 mV in the open circuit voltage of organic solar cells, while the short circuit current density and fill factor remain nearly unchanged. Similar to ZnPc:C 60 ‐based devices, the device characteristics of F 4 ZnPc:C 60 solar cells can be further enhanced by improving the blend layer morphology by substrate heating during deposition. F 4 ZnPc is an efficient donor material that can achieve a 4.6% power conversion efficiency in single heterojunction organic solar cells.