Micro multi-nozzle jet coating of organic thin film for organic light-emitting diode lighting devices

Micro and Nano Systems Letters

Table 1 Summary of the OLED lighting device performance according to the coating methods (CE: current efficiency, PE: power efficiency)

No	Coating methods	Emission area for IVL measurement [mm × mm]	Luminance [cd/m²]	Efficiency
1 [1]	Slot-die	2 × 2	-	PE: 28.7 lm/W
2 [3]	Slot-die	2 × 2	~ 19,500	PE: 27.2 lm/W
3 [29]	Slot-die	50 × 50	47,000	CE: 29 cd/A, PE: 14 lm/W
4 [30]	Slot-die	6 × 4	5200	CE: 31.3 cd/A, PE: 8.1 lm/W
5 [30]	Flexo printing	6 × 4	25,200	CE: 20.1 cd/A, PE: 5.8 lm/W
6 [31]	Blade-Jet	-	8930	PE: 8.42 lm/W
Our study	Nozzle jet	20 × 20	10,125	CE: 63.7 cd/A, PE: 46.5 lm/W