Advanced Materials

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

Authors

  • Wen-Yong Lai,

    1. Jiangsu Key Laboratory for Organic Electronics & Information Displays (KLOEID) Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road, Nanjing 210046 (PR China)
    2. Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road, Nanjing 210046 (PR China)
    3. Institute of Advanced Materials, Fudan University 220 Handan Road, Shanghai 200433 (PR China)
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  • Ruidong Xia,

    1. Experimental Solid State Physics Group, Department of Physics Blackett Laboratory, Imperial College London Prince Consort Road, London, SW7 2AZ (UK)
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  • Qi-Yuan He,

    1. Institute of Advanced Materials, Fudan University 220 Handan Road, Shanghai 200433 (PR China)
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  • Peter A. Levermore,

    1. Experimental Solid State Physics Group, Department of Physics Blackett Laboratory, Imperial College London Prince Consort Road, London, SW7 2AZ (UK)
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  • Wei Huang,

    Corresponding author
    1. Jiangsu Key Laboratory for Organic Electronics & Information Displays (KLOEID) Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road, Nanjing 210046 (PR China)
    2. Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road, Nanjing 210046 (PR China)
    • Jiangsu Key Laboratory for Organic Electronics & Information Displays (KLOEID) Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road, Nanjing 210046 (PR China).
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  • Donal D. C. Bradley

    Corresponding author
    1. Experimental Solid State Physics Group, Department of Physics Blackett Laboratory, Imperial College London Prince Consort Road, London, SW7 2AZ (UK)
    • Experimental Solid State Physics Group, Department of Physics Blackett Laboratory, Imperial College London Prince Consort Road, London, SW7 2AZ (UK).
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  • This work was funded by the National Natural Science Foundation of China (Grants 60325412, 90406021 and 50428303), the NUPT Foundation (Grant NY207040), the Commission of the European Community (FP6-IST-026365 POLYCOM) and British Petroleum International (studentship to PAL).

Abstract

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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