Nondispersive hole transport in an electroluminescent polyfluorene

M. Redecker, D. D.C. Bradley, M. Inbasekaran, E. P. Woo

Research output: Contribution to journalArticlepeer-review

447 Scopus citations


Time-of-flight measurements have been used to study carrier transport in films of poly(9,9-dioctylfluorene). We find nondispersive hole transport with a room-temperature mobility, μp=4×10-4cm2/Vs at a field of 5×105V/cm. The field dependence of the mobility is weak: μp=3×10-4cm2/Vs at 4×104V/cm and increases only modestly to μp=4.2×10-4cm2/Vs at 8×105V/cm. Both the relatively high mobility and weak field dependence point to a high degree of chemical regularity and purity that makes polyfluorene attractive for use as an electroluminescent polymer and for other device applications. We have not been able to measure clean electron current transients, suggesting highly dispersive transport with possible deep trapping, as found in many other conjugated polymers. © 1998 American Institute of Physics.
Original languageEnglish (US)
JournalApplied Physics Letters
Issue number11
StatePublished - Dec 1 1998
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2019-11-27


Dive into the research topics of 'Nondispersive hole transport in an electroluminescent polyfluorene'. Together they form a unique fingerprint.

Cite this