Patent ID: 8519615
Filing Date: 2013-08-27
Classification: H01L,Y10S

Abstract:
1. A light emitting element comprising a first layer and a second layer containing a light emitting material between a first electrode and a second electrode, wherein the first layer is provided in contact with the first electrode, and the first layer comprises a composite material comprising an organic compound and an inorganic compound, wherein the organic compound is 4,4′-bis[N-(4-biphenylyl)-N-phenylamino]biphenyl, wherein the first electrode contains a material having a work function of 3.5 eV to 5.5 eV, wherein the activation energy for carrier generation in the composite material is 0.01 eV to 0.5 eV, wherein a measured current-voltage characteristic of a thin-film layer formed from the composite material which is interposed between first and second electrodes each having a work function of 3.5 eV to 5.5 eV follows Formula (1) below, wherein J denotes a current density; V, a voltage; φ