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Wen-Yong Lai, Ruidong Xia, Qi-Yuan He, Peter A. Levermore, Wei Huang and Donal D. C. Bradley Enhanced Solid-State Luminescence and Low-Threshold Lasing from Starburst Macromolecular Materials Advanced Materials 21

Version of Record online: 11 NOV 2008 | DOI: 10.1002/adma.200800748

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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.

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