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P‐147: Efficient and Color‐Saturated Inverted Bottom‐Emitting Organic Light‐Emitting Devices with a Semi‐Transparent Metal‐Assisted Electron Injection Layer
Author(s) -
Wu ChangYen,
Ho MengHuan,
Gao SinMin,
Su ShangYu,
Lin KuanHung,
Chen Chin H.
Publication year - 2009
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3256648
Subject(s) - oled , materials science , layer (electronics) , optoelectronics , metal , doping , electron , light emitting diode , diode , fluorescence , quantum efficiency , optics , nanotechnology , physics , quantum mechanics , metallurgy
We report the development of highly efficient and color‐saturated green fluorescent C545T dye‐doped inverted bottom‐emitting organic light emitting diode (IBOLED) by the insertion of a semi‐transparent metal‐assisted electron injection layer (SM‐EIL) based on silver between the ITO and the n‐doped electron injection layer (EIL). This n‐i‐p device with its synergistic microcavity effect achieved maximum efficiencies of 24 cd/A and 12.9 lm/ W and an external quantum efficiency of 6.2% with a saturated CIE x,y (0.24,0.71) which are twice better than those of the conventional OLED and over 60% improvement on IBOLED without the SM‐EIL.