Abstract
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> We report a double emission layer structure, incorporating a double phosphorescent “guest/host system” of tris (1-Phenylisoquinoline) iridium (III) <formula formulatype="inline"><tex Notation="TeX">$({\hbox{Ir}}({\hbox{piq}})_{3})$</tex> </formula> 15wt% doped into two different host molecules, <formula formulatype="inline"> <tex Notation="TeX">${\hbox{4,4}}^{\prime}-{\hbox{bis}}[{\hbox{N}}-(1-{\hbox{napthyl}})-{\hbox{N}}-{\hbox{phenyl}}-{\hbox{amino}}]$</tex> </formula> biphenyl (NPB) and bis-(2-methyl-8-quinolinolato)-4-(phenyl-phenolato) aluminum-(III) (BAlq). The proposed configuration reduces the efficiency rolloff, providing high stability at high operating luminance. A maximum current efficiency of 9.5 cd/A, at a driving voltage of 3 V, and a remarkably long device lifetime of more than 2500 h at a starting luminance of 6000 <formula formulatype="inline"><tex Notation="TeX">${\hbox{cd/m}}^{2}$</tex></formula> have been measured. </para>
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.
