Title :
Operation characteristics and degradation of organic electroluminescent devices
Author :
Sato, Yoshiharu ; Ichinosawa, Shoko ; Kanai, Hiroyuki
Author_Institution :
Res. Center, Mitsubishi Chem. Corp., Yokohama, Japan
Abstract :
The degradation of the organic electroluminescent (EL) device is closely related to the physical and chemical stability of the organic thin films. Three important aspects are described: 1) an effect of glass transition temperature of hole transport materials on thermal stability of the device; 2) a role of interface layers at both the anode and cathode; and 3) an improvement of operation stability by doping technology. Considering the above points, an organic EL device was fabricated with a good operation performance: lifetime of longer than 3000 h at an initial luminance of 500 cd/m2
Keywords :
anodes; cathodes; electroluminescent devices; glass transition; interface states; life testing; optical materials; optical testing; organic compounds; thermal stability; 3000 h; anode; cathode; chemical stability; doping technology; glass transition temperature; good operation performance; hole transport materials; initial luminance; interface layers; life testing; operation characteristics; operation stability; optical testing; organic electroluminescent device degradation; organic thin films; physical stability; Anodes; Cathodes; Doping; Electroluminescent devices; Glass; Organic chemicals; Temperature; Thermal degradation; Thermal stability; Thin film devices;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.669464
