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Enhanced Solid‐State Luminescence and Low‐Threshold Lasing from Starburst Macromolecular Materials
Author(s) -
Lai WenYong,
Xia Ruidong,
He QiYuan,
Levermore Peter A.,
Huang Wei,
Bradley Donal D. C.
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200800748
Subject(s) - lasing threshold , materials science , luminescence , electroluminescence , solid state , optoelectronics , laser , oled , fluorene , polymer , optics , nanotechnology , engineering physics , wavelength , physics , layer (electronics) , engineering , composite material
High solid‐state quantum efficiency ( Φ PL ≈ 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 ( λ laser = 437 nm, E th laser ≈ 0.4 nJ/pulse, 1.3 µJ cm −2 ) are demonstrated.
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