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30.3: White Fluorescent PIN OLED with High Efficiency and Lifetime for Display Applications
Author(s) -
Murano Sven,
Kucur Erol,
He Gufeng,
BlochwitzNimoth Jan,
Hatwar Tukaram K.,
Spindler Jeffrey,
Slyke Steven
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 - 10.1889/1.3256803
Subject(s) - oled , brightness , amoled , optoelectronics , luminance , materials science , dopant , fluorescence , quantum efficiency , voltage , diode , optics , doping , electrical engineering , layer (electronics) , physics , nanotechnology , engineering , thin film transistor , active matrix
Highly efficient and stable white PIN OLED structures based on Kodak's proprietary emitters and Novaled's proprietary p‐ and n‐type dopants have been developed with a focus on AMOLED display applications. At color coordinates of 0.33/0.36, a current efficiency of 15.1 cd/A at a voltage of 3.0 V was achieved at 1000 cd/m 2 brightness. The lifetime of this device is 27,000 hours at a starting luminance of 1000 cd/m 2 . The spectrum of the devices contains a contribution from four emitters (RGBY) and the emission of the presented OLED structures is therefore ideally suited for use in RGBW AMOLED displays. with variations of the blocking layers, the device efficiency can be increased to 16.8 cd/A, which corresponds to an external quantum efficiency of 7.3%. The results in this paper are based on a joint research effort between Eastman Kodak Company and Novaled.