Abstract
The determination of charge-carrier mobility in organic light-emitting diodes (OLEDs) in the presence of localized states by impedance spectroscopy (IS) measurements is carried out. The influences of localized-state distributions on charge-carrier mobility determination by IS measurements are examined on the basis of a theory for single-injection space-charge-limited current. It is shown that the drift mobilities of OLEDs can be determined by IS measurements even in the presence of localized states. It is also shown that distributed localized states cause low frequency behavior of capacitance (an increase in capacitance with decreasing frequency). Measurements of the characteristic temperatures of conduction- and valence-band tail states are demonstrated in polyfluorene-based LUMATIONTM (SumationTM) Green 1300 Series light-emitting polymers.
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.
