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Efficient Organic Electrophosphorescent White‐Light‐Emitting Device with a Triple Doped Emissive Layer
Author(s) -
D'Andrade B. W.,
Holmes R. J.,
Forrest S. R.
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.200306670
Subject(s) - materials science , optoelectronics , dopant , doping , oled , layer (electronics) , exciton , luminous efficacy , electroluminescence , nanotechnology , physics , quantum mechanics
An organic electrophosphorescent white‐light‐emitting device (see Figure) containing green, red, and blue emitters doped into a 9 nm thick wide‐bandgap material is shown to attain a maximum forward viewing power efficiency of (26±3) lm W –1 . The high power efficiency is attributed to the efficient confinement of excitons and charge within the emissive layer, a thin emissive layer, and highly efficient blue electrophosphorescent dopant.