Abstract
A copolymer derived from fluorene has been synthesised using a fluorene monomer functionalised with poly(ethylene oxide) (PEO)-like segments as comonomer in a poly(dihexylfluorene) main chain. Efficient blue-green polymer light-emitting diodes (LEDs) based on this material and working under ambient atmosphere are reported. When using ITO as anode and aluminium as cathode, operating voltage at around 25 V are required to obtain emission intensity of 1 μW cm −2. By decreasing the film thickness from 250 to 110 nm and using calcium instead of aluminium, the corresponding operating voltage can be reduced by approximately 50% without significant loss of luminescence efficiency. Light-emitting electrochemical cells (LECs) are also demonstrated, leading to threshold operating voltages close to the electrochemical gap of poly(fluorene).
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.
