LiF/Al cathodes and the effect of LiF thickness on the device characteristics and built-in potential of polymer light-emitting diodes
We report the characteristics of a series of polymer light-emitting diodes, fabricated with
LiF/Al cathodes and differing only by the thickness of the LiF interlayer (0nmd 11 nm).
Electroabsorption studies of the internal electrostatic potential give direct evidence of a
sizable reduction of the cathodic barrier height brought about by the LiF films. These results
also correlate with photoemission experiments SE Shaheen, GE Jabbour, MM Morrell, Y.
Kawabe, B. Kippelen, N. Peyghambarian, MF Nabor, R. Schlaf, EA Mash, and NR …
LiF/Al cathodes and differing only by the thickness of the LiF interlayer (0nmd 11 nm).
Electroabsorption studies of the internal electrostatic potential give direct evidence of a
sizable reduction of the cathodic barrier height brought about by the LiF films. These results
also correlate with photoemission experiments SE Shaheen, GE Jabbour, MM Morrell, Y.
Kawabe, B. Kippelen, N. Peyghambarian, MF Nabor, R. Schlaf, EA Mash, and NR …
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