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25.3: Highly Efficient White Light Organic Light‐Emitting Device
Author(s) -
Lin MeiFang,
Wang Lei,
Wong WaiKwok,
Cheah KokWai,
Tam HoiLam,
Lee MengTing,
Ho MengHuan,
Chen Chin H.
Publication year - 2007
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 - 10.1889/1.2785503
Subject(s) - oled , luminance , dopant , white light , materials science , optoelectronics , optics , blue light , physics , doping , nanotechnology , layer (electronics)
A highly efficient white organic light‐emitting device (OLED) with a novel sky blue dopant BUBD‐1 in a two‐color emission system was fabricated. The device achieved an EL efficiency of 17.1 cd/A and 7.9 lm/W at 20 mA/cm 2 with CIE x,y coordinates of (x=0.29, y=0.41) which was not changed with drive conditions. The white light OLED reached a half‐decay t½ lifetime over 40,000 hours at an initial luminance of 300 cd/m 2 .

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