Abstract
The white-light-emitting organic LED with two-wavelength was fabricated using blue emitting material(DPVBi) and a series of orange color fluorescent dye(Rubrene) by vacuum evaporation processes. The basic structure of white-light-emitting OLED was ITO/NPB(150<TEX>$\AA$</TEX>)/DPVBi(150<TEX>$\AA$</TEX>)/Alq<TEX>$_3$</TEX>:Rubrene(150<TEX>$\AA$</TEX>)/BCP(100<TEX>$\AA$</TEX>)/Alq<TEX>$_3$</TEX>(150<TEX>$\AA$</TEX>)/Al(600<TEX>$\AA$</TEX>). The changes of the CIE coordiante strongly depended on the doping concentration of Rubrene and the thickness of NPB layer. We obtained the white-light-emitting OLED close to the pure white color light and the CIE coordinate of the device was (0.315, 0.330) at applied voltage of 13V when the doping concentration of Rubrene was 0.5wt% and the thickness of NPB layer is 200<TEX>$\AA$</TEX>. At a current of 100mA/<TEX>$\textrm{cm}^2$</TEX>, the quantum efficiency was 0.35%.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
