Title :
Bright organic electroluminescent devices with double-layer cathode
Author :
Kido, Junji ; Nagai, Katsutoshi ; Okamoto, Yoshiyuki
Author_Institution :
Dept. of Appl. Sci., Brookhaven Nat. Lab., Upton, NY, USA
fDate :
7/1/1993 12:00:00 AM
Abstract :
Electroluminescent devices were fabricated using a diamine derivative and tris (8-quinolinolato) aluminum (III) complex as the hole transport layer and the emitting layer, respectively. The glass substrate/anode/hole transport layer/emitting layer/cathode cells structure was employed. The anode was indium-tin-oxide (ITO) transparent electrode, and the cathode was a double layer consisting of first layer of Mg or Li and the second layer of Ag. Intense bright green emission with luminance of 40400 cd/m2 was achieved at 18-V with a current density of 330 mA/cm2 for the cell with the Al complex doped with 1 mol.% of coumarin 6 and Li/Ag as the cathode
Keywords :
electroluminescent displays; luminescent devices; ITO anode; bright green emission; cells structure; coumarin 6; current density; diamine derivative; double-layer cathode; emitting layer; hole transport layer; luminance; organic electroluminescent devices; transparent electrode; tris (8-quinolinolato) aluminum (III) complex; Anodes; Cathodes; Charge carrier processes; Electrodes; Electroluminescence; Electroluminescent devices; Fluorescence; Organic materials; Radiative recombination; Spontaneous emission;
Journal_Title :
Electron Devices, IEEE Transactions on
