17.4: Improved Efficiency by a Fluorescent Sensitizer in Red Organic Light‐emitting Devices based on a Europium Complex | Zendy

Fang Junfeng | Zendy; Ma Dongge | Zendy

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17.4: Improved Efficiency by a Fluorescent Sensitizer in Red Organic Light‐emitting Devices based on a Europium Complex

Author(s) -

Fang Junfeng,

Ma Dongge

Publication year - 2004

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 - 10.1889/1.1825797

Subject(s) - oled , europium , brightness , fluorescence , materials science , current density , optoelectronics , diode , doping , red light , layer (electronics) , photochemistry , optics , chemistry , luminescence , nanotechnology , physics , quantum mechanics , botany , biology

By doping a fluorescent dye as sensitizer in the emissive layer, we realized high efficient red organic light‐emitting diodes (OLEDs) based a europium complex. The OLEDs realized by this method showed pure red emission at 612 nm with a full width at half maximum of 3 nm. The maximum brightness and EL efficiency reached 2450 cd/m 2 at 20 V and 9.0 cd/A (6.0 lm/w) at current density of 0.012 mA/cm 2 , respectively. At the brightness of 100 cd/m 2 , the current efficiency yet reached 4.4 cd/A.

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