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http://dx.doi.org/10.5695/JKISE.2007.40.2.077

The Luminescent Characteristics of C545T Doped OLED Devices  

Ju, Sung-Hoo (Department of Advanced Materials Science and Engineering, Daejin University)
Yang, Jae-Woong (Department of Advanced Materials Science and Engineering, Daejin University)
Publication Information
Journal of the Korean institute of surface engineering / v.40, no.2, 2007 , pp. 77-81 More about this Journal
Abstract
To investigate the characteristics of green light-emitting OLED device, C545T material with $Alq_3$ was doped in the OLED device of $ITO(1500)/2-TNATA(400{\AA})/NPB(80{\AA})/Alq_3:C545T(160{\AA})/Alq_3(240{\AA})/LiF(3{\AA})/Al(2400{\AA})$ structure, which was used as a activator at the respective concentration of 0.5 vol.%, 1 vol.%, 2 vol.% and 3 vol.%. It was observed from the experiments that the device efficiency firstly increased with the increase of C545T concentration and the maximum efficiency of 10.9 cd/A and 4.28 lm/W was obtained at C545T concentration of 1 vol.%, and then the device efficiency decreased as the C545T activator concentration increased above 2 vol.% contents, while the longest lifetime of over 750 hours was obtained at C545T concentration of 1 vol.%.
Keywords
OLED; Green; Efficiency; Lifetime; C545T;
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