A light emitting device (1) includes a support substrate (3), an organic EL element (10) disposed on the support substrate (3), and a sealing member (11) that seals the organic EL element (10) and has a space (S) in which the organic EL element (10) is accommodated, and an inert gas is contained in the space (S). The organic EL element (10) is formed by laminating a first electrode layer (5), an organic functional layer (7) and a second electrode layer (9) on the support substrate (3) in that order. In the sealing member (11), a desiccant (15) is provided at a position facing the second electrode layer (9). The second electrode layer (9) includes at least three metal layers. Among the plurality of metal layers, one metal layer is made of aluminum and the uppermost metal layer is made of silver.

An organic light-emitting device includes a substrate, an anode on the substrate, a hole transport region on the anode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a cathode on the electron transport region, wherein the electron transport region includes an electron injection layer including a first material including at least one of a halide of an alkali metal, and a second material including at least one of a lanthanide metal and a alkaline earth metal, and wherein the cathode contacts the electron injection layer and includes a first metal including at least one of silver, gold, platinum, copper, manganese, titanium, cobalt, nickel, and tungsten, and a second metal including at least one of a lanthanide metal and an alkaline earth metal, wherein an amount of the first metal is equal to or greater than that of the second metal.

Embodiments of the present disclosure disclose an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel includes: a substrate; a first electrode and a second electrode that are stacked, wherein the first electrode and the second electrode are both located on the same side of the substrate; an organic light-emitting layer, which is located between the first electrode and the second electrode; an electron transport layer, which is located between the organic light-emitting layer and the second electrode; wherein, a rare earth transitional metal is also contained at any location between the surface of the second electrode away from the organic light-emitting layer and the surface of the electron transport layer near to the organic light-emitting layer.

An organic light emitting element according to an exemplary embodiment of the present disclosure includes a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, an electron injection layer between the second electrode and the emission layer, and a barrier layer between the electron injection layer and the second electrode, wherein a work function of the barrier layer is larger than a work function of the second electrode.

An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.

An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.

Provided is a light-emitting device which can emit monochromatic light with high purity due to a microcavity effect and which can emit white light in the case of a combination of monochromatic light. Provided is a high-definition light-emitting device. Provided is a light-emitting device with low power consumption. In a light-emitting device with a white-color filter top emission structure, one pixel is formed of four sub-pixels of RBGY, an EL layer includes a first light-emitting substance which emits blue light and a second light-emitting substance which emits light corresponding to a complementary color of blue, and a semi-transmissive and semi-reflective electrode (an upper electrode) is formed so as to cover an edge portion of the EL layer.

A biscarbazole derivative having a specific group, which is represented by formula (1): ##STR00001##
and an organic electroluminescence device in which a plurality of organic thin-film layers including a light emitting layer are disposed between a cathode and an anode, and at least one of the organic thin-film layers include the biscarbazole derivative. The organic electroluminescence device exhibits high emission efficiency and has a long lifetime. In formula (1), each of A.sub.1 and A.sub.2 independently represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms; each of Y.sub.1 to Y.sub.16 independently represents C(R) or a nitrogen atom; each of R groups independently represents a hydrogen atom, etc.; and each of L.sub.1 and L.sub.2 independently represents a single bond, etc.; provided that at least one of A.sub.1, A.sub.2 and R represents a substituted or unsubstituted fluoranthenyl group, etc.

A biscarbazole derivative having a specific group, which is represented by formula (1): ##STR00001##
and an organic electroluminescence device in which a plurality of organic thin-film layers including a light emitting layer are disposed between a cathode and an anode, and at least one of the organic thin-film layers include the biscarbazole derivative. The organic electroluminescence device exhibits high emission efficiency and has a long lifetime. In formula (1), each of A.sub.1 and A.sub.2 independently represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms; each of Y.sub.1 to Y.sub.16 independently represents C(R) or a nitrogen atom; each of R groups independently represents a hydrogen atom, etc.; and each of L.sub.1 and L.sub.2 independently represents a single bond, etc.; provided that at least one of A.sub.1, A.sub.2 and R represents a substituted or unsubstituted fluoranthenyl group, etc.

The invention relates to an organic optoelectronic component comprising a substrate (101) on which a first electrode (102), then an organic functional layer stack (103) having at least one organic optoelectronic layer, and then a second electrode (104) are successively arranged. A thin film encapsulation (107) is arranged over the second electrode (104) and in addition to the second electrode (104), at least one first intermediate layer (121) having a hardness which is different from the layer which is directly adjacent thereto is arranged between the organic functional layer stack (103) and the thin-film encapsulation (107).