Title :
Enhancing Performances of Blue Organic Light-Emitting Devices Incorporating CuPc as Electron Buffer Layers
Author :
Jiao, Zhi Qiang ; Wu, Xiao Ming ; Hua, Yu Lin ; Bai, Juan Juan ; Bi, Wen Tao ; Mu, Xue ; Yin, Shou Gen
Author_Institution :
Sch. of Mater. Sci. & Eng., Tianjin Univ. of Technol., Tianjin, China
fDate :
3/1/2012 12:00:00 AM
Abstract :
The performances of blue organic light-emitting device based on N-BDAVBi are enhanced by inserting a CuPc electron buffer layer, which improves the injection of electrons. By adjusting the thicknesses of the CuPc electron buffer layer and the MoO3 hole buffer layer, the maximum luminescence, the current efficiency, and the power efficiency of above devices have been approximately enhanced by 113%, 55%, and 88%, respectively, and the reduction in turn-on voltage reaches 38%, comparing with that of the device without the buffer layers.
Keywords :
buffer layers; copper; light emitting devices; Cu; CuPc; N-BDAVBi; blue organic light-emitting devices; electron buffer layers; luminescence; power efficiency; Buffer layers; Charge carrier processes; Current density; Indium tin oxide; Luminescence; Organic light emitting diodes; Performance evaluation; $hbox{MoO}_{3}$ ; CuPc; electron buffer layer; organic light-emitting devices (OLEDs);
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2011.2179516
