摘要:
An organic electroluminescent element and display device is provided with anode, cathode, a light emitting layer arranged between the anode and cathode, and at least 3 organic layers arranged between the light emitting layer and the anode. The organic electroluminescent element is characterized by an absolute value |LUMO(A)| of an energy level of a Lowest Unoccupied Molecular Orbital (LUMO) for the first organic layer provided to the anode side of the organic layers and an absolute value |LUMO(B)| of an energy level of a the LUMO for the second organic layer adjacent to the cathode side of the first organic layer having a relationship of |LUMO(A)|
摘要:
The invention provides an organic electroluminescent element comprising a cathode, an anode, a plurality of light emitting units layered and arranged between the cathode and the anode via an intermediate unit, a cavity adjustment layer formed between the light emitting unit nearest to the anode and the anode, and an electron extracting layer formed adjacently to the cavity adjustment layer in the light emitting unit side and is characterized in that the film thickness of the cavity adjustment layer is adjusted to adjust the optical distance from the light emitting position of each light emitting unit to the anode.
摘要:
It is an object of the present invention to provide an organic electroluminescent element having a longer lifetime. In order to accomplish the object, an organic electroluminescent element adapted to comprise a light emitting layer including an organic material between an anode and a cathode is provided with a hole transport layer for transporting holes injected from the anode toward the light emitting layer. Along with the hole transport layer, an intermediate layer having an energy level of a lowest unoccupied molecular orbital lower than those of the hole transport layer and the light emitting layer is provided therebetween.
摘要:
An organic electroluminescent element comprising a cathode, an anode, an intermediate unit arranged between a cathode and an anode, a first light emitting unit arranged between a cathode and an intermediate unit, and a second light emitting unit arranged between an anode and an intermediate unit, wherein an electron extracting layer for extracting an electron from an adjacent layer adjoining a cathode side is provided in an intermediate unit, an absolute value of an energy level of a lowest unoccupied molecular orbital (LUMO) of an electron extracting layer |LUMO(A)|, and an absolute value of an energy level of a highest occupied molecular orbital (HOMO) of the adjacent layer |HOMO(B)| are in the relationship of |HOMO(B)|−|LUMO(A)|≦1.5 eV, and an intermediate unit supplies a hole generated by extraction of an electron from an adjacent layer by an electron extracting layer and, at the same time, supplies the extracted electron to a second light emitting unit.
摘要:
A light-emitting device including a plurality of emission layers, which has improved luminous efficiency and improved emission lifetime, is provided. In the light-emitting device, a first optical film thickness range L1 from a light-emitting position of a first emission layer to a light-emitting surface of the device, a second optical film thickness range L2 from a light-emitting position of a second emission layer to the device light-emitting surface, and film thicknesses of a plurality of layers between the light-emitting surface and the first emission layer, the first emission layer and the second emission layer are set so as to increase the luminous intensity of color of an emission produced by mixing an emission from the first emission layer with an emission from the second emission layer.
摘要:
An organic EL display in which organic EL devices are prevented from being degraded because of interfaces occurring between the luminescent layers and the electron transporting layers. In each of the organic EL devices, a red luminescent layer, a green luminescent layer, and a blue luminescent layer are formed on a hole transporting layer. An electron transporting layer is formed on the blue luminescent layer alone. The red luminescent layer and the green luminescent layer have the same thickness as the sum of the thicknesses of the electron transporting layer and the blue luminescent layer.
摘要:
In an organic electroluminescent element provided with a blue light-emitting layer and an orange light-emitting layer as a light-emitting layer between a hole injection electrode and an electron injection electrode, the blue light-emitting layer contains a host material, a light-emitting dopant and an assist dopant supplementing the carrier transfer of the host material. When the host material is an electron transfer material, an assist dopant has a smaller absolute value of highest occupied molecular orbital (HOMO) energy level than that of the host material and has a higher hole mobility than that of the host material.
摘要:
It is an object of the present invention to provide an organic electroluminescent element having a longer lifetime. In order to accomplish the object, an organic electroluminescent element adapted to comprise a light emitting layer including an organic material between an anode and a cathode is provided with a hole transport layer for transporting holes injected from the anode toward the light emitting layer. Along with the hole transport layer, an intermediate layer having an energy level of a lowest unoccupied molecular orbital lower than those of the hole transport layer and the light emitting layer is provided therebetween.
摘要:
A hole injecting electrode composed of ITO is formed on a glass substrate. On the hole injecting electrode, a hole injecting layer composed of CuPc (copper phthalocyanine), a plasma thin film of CFx formed by plasma CVD, a hole transporting layer of NPB, and a light emitting layer are formed in the order. On the light emitting layer, an electron transporting layer is formed, and an electron injecting electrode is formed thereon.
摘要:
Disclosed is a metal complex compound represented by the following Chemical Formula 1, and an organic light emitting diode device including the same. In Chemical Formula 1, M, R1 to R8, A1 to A6, and y are the same as defined in the detailed description.