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http://dx.doi.org/10.5302/J.ICROS.2008.14.6.511

Dependence of Blue Organic Emitter Layer Thickness to Optical Property of 2-wavelength White Organic Light-emitting Diodes  

Park, Chan-Jun (선문대학교 전자공학과)
Cho, Nam-Ihn (선문대학교 전자공학과)
Song, Young-Wook (선문대학교 전자공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.14, no.6, 2008 , pp. 511-514 More about this Journal
Abstract
2-wavelength type white OLED devices have been made consisted of two layers; a layer with blue light emitting DPVBi host and other EML layer with yellow emitting rubrene dopant. New method to get white emitting device has been suggested by varying thicknesses of the DPVBi layer. The ITO/2-TNATA($150{\AA}$)/NPB($350{\AA}$)/DPVBi($35{\AA}$)/DPVBi:rubrene (2wt%,$200{\AA}$)/DPVBi($100{\AA}$)/Alq_3($50{\AA}$)/LiF($5{\AA}$)/Al($1000{\AA}$) structure has showed optimum results in CIE coordinates of (0.3233, 0.33). OLED devices with this structure has properties of $1.2d/m^2$ at turn-on voltage of 3.9V and $1037cd/m^2$ at 7.9V. This structure has advantages of simple fabrication and easy to emit the white color.
Keywords
information display; organic emitting layer; 2-wavelength white OLED;
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