Abstract
Single-layer polymer light-emitting diodes areprepared from blends of poly(N-vinylcarbozole) (PVK) doped withtris(8-hydroxy-quinoline) aluminium (Alq3) of 2 wt% (sample a)and 0.2 wt% (sample b). The onset of PVK transientelectroluminescence (EL) is delayed with respect to that of Alq3in sample a under pulsed excitation, while the EL onsets of Alq3 andPVK in sample b are simultaneous. The total carrier mobility of theAlq3-rich regions in sample a is larger than that of the PVK-richregions. However, the total carrier mobility is homogeneous in sample b.The phase image of atomic force microscopy and photoluminescencespectra of samples a and b indicate that the separated phase ofsamples a and b exists in the PVK-rich and Alq3-richregions. The variance of the doping concentration and separated phasein blends results in the different carrier transport mobility ofAlq3-rich and PVK-rich regions.
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.
