Fabrication of highly efficient and stable doped red organic light-emitting device using 2-methyl-9,10-di(2-napthyl)anthracene and tris(8-hydroxyquinolinato)aluminum as cohost materials

Abstract

Articles you may be interested inStudy of electric characteristics and diffusion effects of 2-methyl-9,10-di(2-naphthyl)anthracene doped with cesium fluoride by admittance spectroscopy Appl. Phys. Lett. 96, 133310 (2010); 10.1063/1.3377921Influence of the hole blocking layer on blue phosphorescent organic light-emitting devices using 3,6-di(9-carbazolyl)-9-(2-ethylhexyl)carbazole as host material Appl. Phys. Lett. 96, 093304 (2010); 10.1063/1.3350890Studies of the degradation mechanism of organic light-emitting diodes based on tris (8-quinolinolate)aluminum Alq and 2-tert-butyl-9,10-di(2-naphthyl)anthracene TBADN

Design and Synthesis of Iridium Bis(carbene) Complexes for Efficient Blue Electrophosphorescence

“…These improvements are most likely due to the more balanced charge-transporting properties of the mixed host layer. [15] The calculated CIE coordinates for device B (0.14, 0.18) are much smaller than that of the devices using the well-known complex FIrA C H T U N G T R E N N U N G (pic) (bis [4,6-…”

Lifetime study of red phosphorescent organic light-emitting diodes with a double doping structure

“…There have been a lot of researches about the lifetime improvement of OLEDs, which include material and device architecture developments [1][2][3][4][5][6][7][8]. Many device architectures to enhance the lifetime of the OLEDs have been known and the most effective way of extending the lifetime of the OLEDs was to adopt a mixed host emitting structure instead of the single host device structure [1,2].…”

Relationship between host energy levels and device performances of phosphorescent organic light-emitting diodes with triplet mixed host emitting structure

“…Since the report of Aziz et al, other mixed host systems have been developed. [2][3][4][5][6] Alq 3 : rubrene mixed host systems were effective to get long lifetime and high efficiency in red fluorescent devices 2,3 and 2-methyl-9,10-di͑2-napthyl͒ anthracene: Alq 3 improved efficiency and long-term stability of red OLEDs. 4 Other than these studies, ͑4,4Ј-N , NЈ-dicarbazole͒biphenyl ͑CBP͒ : Alq 3 also showed high efficiency compared with Alq 3 devices 5 and lightemitting mechanism of mixed host system was also reported.…”

“…[2][3][4][5][6] Alq 3 : rubrene mixed host systems were effective to get long lifetime and high efficiency in red fluorescent devices 2,3 and 2-methyl-9,10-di͑2-napthyl͒ anthracene: Alq 3 improved efficiency and long-term stability of red OLEDs. 4 Other than these studies, ͑4,4Ј-N , NЈ-dicarbazole͒biphenyl ͑CBP͒ : Alq 3 also showed high efficiency compared with Alq 3 devices 5 and lightemitting mechanism of mixed host system was also reported. 6 Even though there was a previous patent about triplet mixed host using NPB: Alq 3 , 7 device performances were not good enough and there has been no paper about improved device performances in phosphorescent OLEDs ͑PHOLEDs͒ using triplet mixed host structure.…”

“…In particular, many studies were focused on improving lifetime and luminance efficiency of OLEDs. [1][2][3][4][5][6] One efficient approach to get long lifetime and high efficiency in OLEDs is to use mixed host system instead of using a single host material. 1- 6 Aziz et al reported mixed host system of tris͑8-hydroxyquinoline͒ aluminium ͑Alq 3 ͒ and N , NЈ-di͑1-naphthyl͒-N , NЈ-diphenylbenzidine ͑NPB͒ and lifetime of mixed host device could be improved.…”