The UK's' Centre for Process Innovation (CPI) produced a range of flexible OLED lighting demonstrators. These prototypes were manufactured at CPI's OLED/OPV prototyping line. The CPI made several panels on a range of substrates with thickness ranging from 50µm to 125µm.
Those devices are made from an ITO anode, evaporated hole injection layer, co-evaporated emissive layer and a conventional cathode. The OLEDs are encapsulated using a pressure sensitive adhesive and a commercially available barrier material. The CPI's researchers are investigating a number of methods for device encapsulation and are collaborating with adhesive, getter, and barrier film suppliers.
The center also plans install a new 300 mm web roll to roll (R2R) coater for the printing of a range of organic material sets. The system will include both slot die and screen printing capabilities, with options to upgrade to 500mm web width and to incorporate other printing techniques such as reverse gravure. CPI will also install an encapsulation module allowing devices manufactured within the roll to roll coater to be laminated using a barrier film.
