Improving the performance of polyfluorene-based organic light-emitting diodes via end-capping

Authors
Miteva, T Meisel, A Knoll, W Nothofer, HG Scherf, U Muller, DC Meerholz, K Yasuda, A Neher, D
Citation
T. Miteva et al., Improving the performance of polyfluorene-based organic light-emitting diodes via end-capping, ADVAN MATER, 13(8), 2001, pp. 565
Citations number
25
Categorie Soggetti
Multidisciplinary,"Material Science & Engineering
Journal title
ADVANCED MATERIALS
ISSN journal
09359648 → ACNP
Volume
13
Issue
8
Year of publication
2001
Database
ISI
SICI code
0935-9648(20010418)13:8<565:ITPOPO>2.0.ZU;2-S
Abstract
Efficient deep-blue electroluminescence (EL) is obtained via end-capping po lyfluorene (PF) homopolymers with hole-transporting moieties (HTMs). Strong evidence that the observed improvement in device performance is related to the end-capper moieties comes from the comparison of two different end-cap pers. The HTM does not disturb the liquid-crystal properties of the PF poly mer. Using doped polyimide alignment layers. polarized light-emitting diode s (LEDs) with a polarization ratio in excess of twenty at an efficiency of 0.25 cd/A could be realized.