Author/Authors :
Naka، نويسنده , , Shigeki and Tamekawa، نويسنده , , Mitsugu and Terashita، نويسنده , , Toshiaki and Okada، نويسنده , , Hiroyuki and Anada، نويسنده , , Hiroshi and Onnagawa، نويسنده , , Hiroyoshi، نويسنده ,
Abstract :
Organic electroluminescent devices with an aluminium alloy cathode, consisting of aluminium-lithium, aluminium-calcium or aluminium-magnesium, have been examined. From the temperature dependence of the current-voltage characteristics in metal/aluminium complex (Alq3)/metal structure devices, the carrier-injection mechanism in the higher current range is ascribed to thermionic (Schottky) emission and the carrier-conduction mechanism of the Alq3 layer in the lower current range is observed to be three-dimensional variable-range hopping.
