Organic Light-Emitting Diodes (OLED) offer unique features for luminaire designs and technical lighting applications. OLED technology allows white and monochrome emission in nearly every color. Additionally, OLED can be quasi transparent when switched off. Next to their appearance another aspect is of importance: OLED technology is nearly independent of the substrate they are processed on. Beside rigid glass OLED can be processed on flexible substrates like polymer webs, metal strips and thin flexible glass. Such flexible OLED modules allow much more freedom of design for integration into curved surfaces. In the last years the Fraunhofer FEP has developed fabrication technologies for OLED devices by sheet-to-sheet and roll-to-roll processing on different type of flexible substrates.
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