Multilayer organic light emitting diodes OLEDs

Figure 4.8 Schematic representation some of the elements of a generalised multilayer organic light-emitting diode (OLED) with direct addressing. The thin metallic cathode segments are connected directly to the electron-transport layer (ETL). The impermeable encapsulation is not shown.

Fabrication of solution-processed multilayered organic light-emitting diodes (OLEDs) from oxetane-ftinctionalized precursors, which are commonly photochemically cross-linked by UV radiation in the presence of a photoinitiator, has been reported recently. The reaction proceeds via CROP. Insoluble cross-linked polymer networks were obtained using precursors that contain two or more oxetane units per molecule. This novel approach simplifies OLED fabrication, and is generally compatible with various deposition/printing techniques. 

Figure 21-28. Permeation values for multilayers and possible applications (h.p. hybrid polymers, VIP vacuum insulating panels, LED light emitting diodes, OLED organic light emitting...

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