Abstract
Polymer light-emitting diodes (PLEDs) were prepared using an environment-friendly alcohol-soluble quaternized aminoalkyl-substituted conjugated polyfluorene co-polymerizing 2,1,3-benzothiadiazole monomer (PFNBr-BTDZ05) as an emitter, a high work-function Au metal as a cathode. The device structure used here is indium–tin–oxide (ITO)/poly(N-vinylcarbazole) (PVK)/PFNBr-BTDZ05/Au, where PVK is an anode buffer layer acting as the hole injection. The maximal external quantum and luminance efficiencies of 0.73% and 0.86 cd/A are obtained, and the maximal luminance is nearly 700 cd/m2 at 13 V, which was the highest brightness value reported in PLEDs with the Au metal cathode. This conjugated polyelectrolyte has such excellent electron injection ability that the device with the structure of ITO/poly(ethylene dioxythiophene)/poly(2-(4-(3′,7′-dimethyloctyloxy)-phenyl)-p-phenylenevinylene)/PFNBr-BTDZ05/Al exhibits a high external quantum efficiency of 7.0%. The electron-injecting mechanism of PFNBr-BTDZ05 was discussed.
Sign-in/Register to access full text options 
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.
