Abstract
The efficient red phosphorescence polymer light-emitting diodes (PLEDs) based on aluminum (Al) cathode were demonstrated. The devices composed of neutral aminoalkyl substituted polyfluorene, poly[(9,9-bis(3′-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] (PFN) as the host and bis(1-(3-(9,9-dimethyl-fluorene-2-yl)phenyl)isoquinoline-C2,N′) iridium (III) (3-(pyridin-2′-yl)-1,2,4-triazole) [Ir(DMFPQ)2pt] as the dopant. High external quantum efficiency of 5.6% (at 16.8 V) and a luminance of 1400 cd/m2 (at 19.6 V) were obtained from the device with Al cathode only. The performances (quantum efficiency and luminance) of the devices could be comparable to those of the devices with a low work-function metal cathode (such as calcium and barium). We believe that the reason for the high performances was due to the effective electron injection from Al into PFN.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
