Enhanced Solid-State Luminescence and Low-Threshold Lasing from Starburst Macromolecular Materials

Enhanced Solid-State Luminescence and Low-Threshold Lasing from Starburst Macromolecular Materials

High solid‐state quantum efficiency (ΦPL ≈ 0.90) materials with attractive properties for OLED and laser applications are reported. Our results show that long fluorene chain‐lengths are not a necessary prerequisite for efficient solid‐state luminescence. Isolated‐molecule‐like solid‐state emission,...

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Veröffentlicht in:Advanced materials (Weinheim) 2009-01, Vol.21 (3), p.355-360
Hauptverfasser: Lai, Wen-Yong, Xia, Ruidong, He, Qi-Yuan, Levermore, Peter A., Huang, Wei, Bradley, Donal D. C.
Format: Artikel
Sprache:eng
Schlagworte:
electroluminescence
fluorine
macromolecular materials
organic light-emitting diodes
photoluminescence
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Zusammenfassung:High solid‐state quantum efficiency (ΦPL ≈ 0.90) materials with attractive properties for OLED and laser applications are reported. Our results show that long fluorene chain‐lengths are not a necessary prerequisite for efficient solid‐state luminescence. Isolated‐molecule‐like solid‐state emission, stable pure‐deep‐blue electroluminescence, and low‐threshold lasing (λlaser = 437 nm, Ethlaser ≈ 0.4 nJ/pulse, 1.3 µJ cm−2) are demonstrated.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200800748