N,N'-Dimethylquinacridone (DMQA) is a green dopant material used in OLEDs. Highly stable and longer-lifetime OLED devices have been achieved by using DMQA as the dopant to a double host (aminoanthracene and Alq3). It is believed that DMQA can prevent excimer formation, thus prolonging the the lifetime of the devices.

By using DMQA as a green dopant, very high efficiency OLEDs with a luminance of greater than 88,000 cd/m2, EQE of 5.4% and current efficiency of 21.1 cd/A have been achieved. DMQA has also been used in green light photodetectors for practical applications, such as photo sensors and chemical sensors.

General Information

Product Details

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.

Chemical Structure

Device Structure(s)

Device structure	ITO/CuPc (15 nm)/NPB (60 nm)/Alq3:0.4 wt.% DMQA (37.5 nm)/Alq (37.5 nm)/MgAg (200 nm) [2]
Colour	Green
Luminance	1,322 cd/m2
Current Efficiency	6.61 cd/A
Lifetime (T1/2)	7,500 hours

Device structure	ITO (150 nm)/a-NPB (60 nm)/Alq3: 1 wt.% C545T*:0.75 wt.% DMQA (30 nm)/Alq3 (30 nm)/LiF (0.8 nm)/Al (150 nm) [3]
Colour	Green
Max. EQE	6.7%
Max. Luminance	84,900 cd/m2
Max. Current Efficiency	23.4 cd/A

Device structure	(ITO)/2-TNATA (5 nm)/NPB (40 nm)/CBP:6 wt.% Ir(ppy)3:0.5 wt.% DMQA (30 nm)/Bphen (10 nm)/Alq3 (20nm)/LiF (0.5 nm)/Al (100 nm) [4]
Colour	Green
Max. EQE	1.85
Max. Current Efficiency	7.08 cd/A
Max. Power Efficiency	4.03 lm/W

Device structure	ITO (80 nm)/NPB (40 nm)/ADN:0.6 wt.% C545T*:1.2 wt.% DMQA (30 nm)//Alq3 (30 nm)/LiF (1 nm)/Al(100 nm) [5]
Colour	Green
Luminance @ 50 mA/cm2	4,750 cd/m2
Current Efficiency @ 50 mA/cm2	9.5 cd/A

Device structure	ITO/NPB (60nm)/ADN:Alq (9:1):0.8 wt.% DMQA (20nm)/BPhen (10nm)/Alq3 (30nm)/LiF (1nm)/Al (200nm) [6] [@20 mA/cm2: 14.7 cd/A)
Colour	Green
Current Efficiency @ 20 mA/cm2	14.7 cd/A