Journal
SYNTHETIC METALS
Volume 152, Issue 1-3, Pages 233-236Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2005.07.236
Keywords
white light-emitting diodes; polyfluorene; 1,8-naphthalimide
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Two polyfluorenes containing 1,8-Naphthalimide units were synthesized by Yamamoto polycondensation reaction. The 1,8-naphthalimide moieties act as both electron and hole trap in the resulting polymers, leading to the EL spectra different from the PL spectra in film. White electroluminescence with a maximum brightness of 11100 cd/m(2), an external quantum efficiency of 2.0% and CIE coordinates of (0.26, 0.36) has been realized through partial energy transfer from polyfluorene to 1,8-naphthalimide moieties.
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