Efficient, Color Stable White Organic Light-Emitting Diode Based on High Energy Level Yellowish-Green Dopants

Efficient, Color Stable White Organic Light-Emitting Diode Based on High Energy Level Yellowish-Green Dopants

White OLEDs with high efficiency and high color stability are developed by using high energy level dopants. The white OLEDs showed high external quantum efficiency of 11.7% and remarkable color stability with the variation of CIE chromaticity coordinates less than (0.02, 0.01) between 10 cd m−2 and...

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Veröffentlicht in:Advanced materials (Weinheim) 2008-05, Vol.20 (10), p.1957-1961
Hauptverfasser: Park, Young-Seo, Kang, Jae-Wook, Kang, Dong Min, Park, Jong-Won, Kim, Yoon-Hi, Kwon, Soon-Ki, Kim, Jang-Joo
Format: Artikel
Sprache:eng
Schlagworte:
doping
light-emitting diodes
multilayers
organic (OLEDs)
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Zusammenfassung:White OLEDs with high efficiency and high color stability are developed by using high energy level dopants. The white OLEDs showed high external quantum efficiency of 11.7% and remarkable color stability with the variation of CIE chromaticity coordinates less than (0.02, 0.01) between 10 cd m−2 and 5000 cd m−2. Moreover roll‐off of efficiency was low and the CRI value was over 87.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200702435