Enhancement in brightness and efficiency of organic electroluminescent device using novel N,N-di(9-ethylcarbaz-3-yl)-3-methylaniline as hole injecting and transporting material
Liu, D; Zhen, CG; Wang, XS; Zou, DC; Zhang, BW; Cao, Y
| HERO ID | 3576578 |
|---|---|
| In Press | No |
| Year | 2004 |
| Title | Enhancement in brightness and efficiency of organic electroluminescent device using novel N,N-di(9-ethylcarbaz-3-yl)-3-methylaniline as hole injecting and transporting material |
| Authors | Liu, D; Zhen, CG; Wang, XS; Zou, DC; Zhang, BW; Cao, Y |
| Journal | Synthetic Metals |
| Volume | 146 |
| Issue | 1 |
| Page Numbers | 85-89 |
| Abstract | A novel hole injecting and transporting material, NN-di(9-ethylcarbaz-3-yl)-3-methylaniline (DECMA), was prepared by one-step reaction for use in organic electroluminescent (EL) devices. Organic EL device with configuration of ITO/DECMA (60 nm)/NPB (10 nm)/Alq(3) (60 nm)/Mg:Ag/Ag turned on at 3.7 V and displayed a brightness of 1150 cd m(-2) and a current efficiency of 5.5 cd A(-1) at the current density of 20 mA cm(-2), while a reference device with configuration of ITO/NPB (70 nm)/Alq3 (60 nm)/Mg:Ag/Ag turned on at 3.9 V and exhibited a brightness of 500 cd m(-2) and a current efficiency of 2.4 cd A(-1) at the same current density. The lower turn on voltage and higher brightness and efficiency obtained in DECMA-containing device can be ascribed to the improved hole injection at anode/organic interface due to the low ionization potential of DECMA and the better balanced hole-electron recombination in emitting layer due to the moderate hole drift mobility of DECMA. (C) 2004 Elsevier B.V. All rights reserved. |
| Doi | 10.1016/j.synthmet.2004.06.022 |
| Wosid | WOS:000224050500013 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | organic light-emitting devices; N,N-di(9-ethylcarbazyl-3)-3-methylaniline; hole injecting and transporting |