Efficient blue emitting organic light emitting diodes based on fluorescent solution processable cyclic phosphazenes

Henk J. Bolink*, Eva Barea, Rubén D. Costa, Eugenio Coronado, Sundarraj Sudhakar, Changgua Zhen, Alan Sellinger

*この研究の対応する著者

研究成果: Article査読

58 被引用数 (Scopus)

抄録

Solution processable blue fluorescent dendrimers based on cyclic phosphazene (CP) cores incorporating amino-pyrene moieties have been prepared and used as emissive layers in organic light emitting diodes (OLEDs). These dendrimers have high glass transition temperatures, are monodisperse, have high purity via common chromatographic techniques, and form defect-free amorphous films via spin/dip coating. The solution processable blue light emitting OLEDs reach current efficiencies of 3.9 cd/A at brightness levels near 1000 cd/m2. Depending on the molecular bridge used to attach the fluorescent dendron to the inorganic core, the emission wavelength changes from 470 to 545 nm, corresponding to blue and green light respectively. Via dilution experiments we show that this shift in emission wavelength is likely associated with molecular stacking of the amino-pyrene units.

本文言語English
ページ(範囲)155-163
ページ数9
ジャーナルOrganic Electronics
9
2
DOI
出版ステータスPublished - 2008 4月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学
  • 電子工学および電気工学

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