Patterning of Flexible Organic Light Emitting Diode (FOLED) stack using an ultrafast laser

Mandamparambil, Rajesh; Fledderus, Henri; Van Steenberge, Geert ORCID; Dietzel, Andreas ORCID

A femtosecond laser has been successfully utilized for patterning thin Flexible Organic Light Emitting Diode (FOLED) structures of individual layer thickness around 100nm. The authors report in this paper a step-like ablation behavior at the layer interfaces which accounts for a local removal of entire layers. Various surface analyzing techniques are used to investigate the morphologies and chemical compositions within and in the vicinity of the ablation areas. This study opens a new avenue in selectively ablating different layers from a multilayer stack on flexible substrates using fs lasers allowing post deposition structuring of large area flexible organic electronic devices.

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Mandamparambil, Rajesh / Fledderus, Henri / Van Steenberge, Geert / et al: Patterning of Flexible Organic Light Emitting Diode (FOLED) stack using an ultrafast laser. Braunschweig 2010.

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