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Interplay of Solvent Additive Concentration and Active Layer Thickness on the Performance of Small Molecule Solar Cells
Author(s) -
Love John A.,
Collins Samuel D.,
Nagao Ikuhiro,
Mukherjee Subhrangsu,
Ade Harald,
Bazan Guillermo C.,
Nguyen ThucQuyen
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201402403
Subject(s) - active layer , materials science , solvent , layer (electronics) , small molecule , molecule , semiconductor , range (aeronautics) , nanotechnology , computer science , optoelectronics , organic chemistry , chemistry , composite material , biochemistry , thin film transistor
A relationship between solvent additive concentration and active layer thickness in small‐molecule solar cells is investigated. Specifically, the additive concentration must scale with the amount of semiconductor material and not as absolute concentration in solution. Devices with a wide range of active layers with thickness up to 200 nm can readily achieve efficiencies close to 6% when the right concentration of additive is used.