Title :
Blue organic light-emitting diode based on 1,2,3,4,5-pentaphenyl-1-(8-phenyl-1,7-octadiynyl)silole
Author :
Chen, Haiying ; Chen, Junwu ; Qiu, Chengfeng ; Tang, Ben Zhong ; Wong, Man ; Kwok, Hoi-Sing
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
A new silole derivative, 1,2,3,4,5-pentaphenyl-1-(8-phenyl-1,7-octadiynyl)silole, is synthesized, characterized, and used as the electron-transport/emission layers in organic light-emitting diodes. Blue emission at 492 nm is observed, with a maximum luminance of 10 460 cd/m2 at 18 V. The respective maximum current and power efficiencies are 8.47 cd/A and 3.8lm/W. A triple-layer composite cathode was used, consisting of tris(8-hydroxy-quinolne)aluminum (Alq3) lithium fluoride and aluminum. The dependence of emission efficiency on the thickness of TPD and Alq3 is investigated and explained.
Keywords :
brightness; cathodes; optical fabrication; organic light emitting diodes; organic semiconductors; semiconductor device testing; visible spectra; 1,2,3,4,5-pentaphenyl-1-(8-phenyl-1,7-Octadiynyl)Silole; 492 nm; aluminum; blue emission; blue organic light emitting diode; electron-transport/emission layers; interface charge; luminance; organic light emitting diodes; quantum efficiency; silole derivative; triple-layer composite cathode; tris(8-hydroxy-quinolne) aluminum lithium fluoride; Aluminum; Cathodes; Chemical technology; Fluorescence; Glass; Liquid crystals; Lithium compounds; Organic light emitting diodes; Phosphorescence; Silicon;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2004.824101
