Order Code: M971MSDS sheet
|Molecular weight||340.37 g/mol|
|Absorption||λmax 294 nm, 510 nm (in THF)|
|Fluorescence||λem 523 nm (in THF)|
|HOMO/LUMO||HOMO = 5.35 eV; LUMU = 3.17 eV |
|Classification / Family||Green dopant materials, OLEDs, Photodetectors, Organic electronics|
|Melting point||286 °C (dec.)(lit.)|
*Sublimation is a technique used to obtain ultra pure-grade chemicals, to mainly filter out trace metals and inorganic impurities. Sublimation happens under certain pressure for chemicals to only go through two physical stages: from a solid state to vapour (gas), and when the vapour condenses to a solid state on a cool surface (referred to as cold finger). The most typical examples of sublimation are iodine and dry ice. For more details about sublimation, please refer to sublimed materials for OLEDs and perovskites and our collection of sublimed materials.
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.
|Device structure||ITO/CuPc (15 nm)/NPB (60 nm)/Alq3:0.4 wt.% DMQA (37.5 nm)/Alq (37.5 nm)/MgAg (200 nm) |
|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) |
|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) |
|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) |
|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)  [@20 mA/cm2: 14.7 cd/A)|
|Current Efficiency @ 20 mA/cm2||14.7 cd/A|
*For chemical structure information please refer to the cited references
Literature and Reviews
- Low dark current small molecule organic photodetectors with selective response to green light, D-S. Leem et al., Appl. Phys. Lett., 103, 043305 (2013); doi: 10.1063/1.4816502 .
- Doped organic electroluminescent devices with improved stability, J. Shi et al., Appl. Phys. Lett., 70, 1665 (1997); doi: 10.1063/1.118664.
- Highly efficient tris(8-hydroxyquinoline) aluminum-based organic light-emitting diodes utilized by balanced energy transfer with cosensitizing fluorescent dyes, Y. Park et al., Appl. Phys. Lett., 95, 143305 (2009); doi: 10.1063/1.3243689.
- Triplet to singlet transition induced low efficiency roll-off in green phosphorescent organic light-emitting diodes, Z. Su et al., Thin Solid Films 519, 2540–2543 (2011); doi:10.1016/j.tsf.2010.12.008.
- Green organic light-emitting diodes with improved stability and efficiency utilizing a wide band gap material as the host, H. Tang et al., Displays 29, 502–505 (2009); doi:10.1016/j.displa.2008.05.001.
- Improved efficiency for green and red emitting electroluminescent devices using the same cohost composed of 9,10-di(2-naphthyl)anthracene and tris-(8-hydroxyquinolinato)aluminum, J. Zhu et al., Physica E 42, 158–161 (2009); doi:10.1016/j.physe.2009.09.020.