Microcrystalline organic thin-film solar cells.
Microcrystalline organic films with tunable thickness are produced directly on an indium-tin-oxide substrate, by crystallizing a thin amorphous rubrene film followed by its use as a template for subsequent homoepitaxial growth. These films, with exciton diffusion lengths exceeding 200 nm, produce solar cells with increasing photocurrents at thicknesses up to 400 nm with a fill factor >65%, demonstrating significant potential for microcrystalline organic electronic devices.
imec, Kapeldreef 75, Leuven, B-3001, Belgium; Semiconductor Physics Section, KU Leuven, Celestijnenlaan 200d, Leuven, B-3001, Belgium.
Bregt
B
Verreet
Paul
P
Heremans
Andre
A
Stesmans
Barry P
BP
Rand
crystals; exciton; organic solar cells; photovoltaic cells; rubrene