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DMQA, green dopant material used in OLEDs
Used in green light photodetectors such as photo sensors and chemical sensors
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.
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.
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