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Efficient Organic Blue‐Light‐Emitting Devices with Double Confinement on Terfluorenes with Ambipolar Carrier Transport Properties
Author(s) -
Wu C.C.,
Lin Y.T.,
Wong K.T.,
Chen R.T.,
Chien Y.Y.
Publication year - 2004
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.200305619
Subject(s) - ambipolar diffusion , materials science , optoelectronics , electroluminescence , photoluminescence , heterojunction , exciton , quantum efficiency , blue light , double heterostructure , blueshift , charge carrier , nanotechnology , semiconductor , electron , condensed matter physics , semiconductor laser theory , physics , layer (electronics) , quantum mechanics
Ter(9,9‐diarylfluorene)s (TDAFs) exhibit many intriguing properties promising for blue light‐emitting devices, such as high thin‐film photoluminescence quantum yields (∼ 90 %), high glass‐transition temperatures (> 200 °C), and an unusual ambipolar carrier‐transport capability. Successful implementation of a double‐ heterostructure device configuration that provides effective confinement of both carriers and excitons in TDAFs results in an electroluminescence performance (5.3 % external quantum efficiency) promising for application in blue‐emitting devices.