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4.4L: Late‐News Paper: Novel OLEDs for Full Color Displays with Highest Power Efficiencies and Long Lifetime
Author(s) -
Birnstock Jan,
Hofmann Michael,
Murano Sven,
Vehse Martin,
BlochwitzNimoth Jan,
Huang Qiang,
He Gufeng,
Pfeiffer Martin,
Leo Karl
Publication year - 2005
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 - 10.1889/1.2036459
Subject(s) - oled , brightness , dopant , optoelectronics , materials science , doping , diode , phosphorescence , optics , layer (electronics) , physics , nanotechnology , fluorescence
Top emitting PIN‐OLEDs that are perfectly suited to full color displays are reported here. For red, green, and blue diodes, power efficiencies at 1000 cd/m 2 of 11 lm/W, 70 lm/W, and 8.4 lm/W were achieved. Lifetimes of phosphorescent bottom emitting PIN‐OLEDs of 30,000 hours at a brightness of 500 cd/m 2 indicate that charge carrier doping allows for very high lifetimes. Even higher stability could be achieved by replacing Cs with the new molecular n‐dopant NDN‐1. Furthermore, a white bottom emitting OLED (color coordinates (0.35, 0.37), CRI of 95) with a power efficiency of 16.3 lm/W at 1000 cd/m 2 is shown.
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