L. Cattin, J. C. Bernède and M. Morsli Toward indium-free optoelectronic devices: Dielectric/metal/dielectric alternative transparent conductive electrode in organic photovoltaic cells physica status solidi (a) 210
This Feature Article presents the state-of-the-art concerning the dielectric/metal/dielectric structures and their application as transparent electrodes in organic photovoltaic cells. The properties of these structures depend on the thickness of the different layers. The threshold thickness value of the metal film is around 10 nm, where the structures commute from an insulating to a highly conductive state. The transmittance of the films increases when the metal thickness increases up to the percolation thickness, while a further increase induces a transmittance decrease. Finally, the nature and the thickness of the dielectric layers can be chosen as a function of the device properties requested, OLEDs, organic photovoltaic cells.
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