| abstract |
Disclosed is an organic light-emitting device which includes a substrate, an anode layer, a hole transmission layer, an electronic barrier layer, a light-emitting layer, an n-type doped barrier layer, an n-type doped electronic transmission layer and a cathode layer. The material of the n-type doped barrier layer is formed through mixing of an organic material and an organic metal compound, wherein the organic material is 4,7-diphenyl-o-phenanthroline or 2-(4-biphenylyl)-5-(4-tertiary butyl) phenyl-1,3,4-oxadiazole. The organic metal compound is formed through cooperation of one of beryllium, gallium, zinc, indium and aluminum and one of hydroxyquinoline, hydroxyquinoline derivative, hydroxyl benzoquinoline, and hydroxyl benzoquinoline derivative, wherein the organic material covers 30-70% of the material of the n-type doped barrier layer by mass. The organic light-emitting device is higher in light-emitting efficiency and longer in service life. Moreover, a preparation method for the organic light-emitting device is also provided. |