Fluorene‐Based Single‐Chain Copolymers for Color‐Stable White Light‐Emitting Diodes | Zendy

Sun Mingliang | Zendy; Niu Qiaoli | Zendy; Du Bin | Zendy; Peng Junbiao | Zendy; Yang Wei | Zendy; Cao Yong | Zendy

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Fluorene‐Based Single‐Chain Copolymers for Color‐Stable White Light‐Emitting Diodes

Author(s) -

Sun Mingliang,

Niu Qiaoli,

Du Bin,

Peng Junbiao,

Yang Wei,

Cao Yong

Publication year - 2007

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.200700016

Subject(s) - fluorene , copolymer , electroluminescence , chromophore , materials science , photochemistry , white light , common emitter , diode , quantum efficiency , oled , polymer chemistry , optoelectronics , chemistry , polymer , nanotechnology , composite material , layer (electronics)

Fluorene‐based single‐chain copolymers with a white light emitter consisting of a blue and an orange chromophore have been synthesized and their photophysical and electroluminescent properties are investigated. The experimental results suggest that only a relatively small fraction of the orange‐emitting units incorporated into the fluorene is needed to achieve efficient white light emission by controlled incomplete energy transfer. A device from a copolymer with 0.02% DDQ content showed the highest external quantum efficiency of 2.64% with a luminance efficiency of 4.06 cd · A −1 with CIE coordinates (0.28, 0.24). The EL emissions are extremely stable over a wide range of current densities.

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