摘要:
An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and comprising; (i) in the light-emitting layer at least one light emitting compound selected from amine containing monostyryl, amine containing distyryl, amine containing tristyryl and amine containing tetrastyryl compounds, and (ii) a further layer located between the cathode and the light emitting layer, containing (a) 10-volume % or more of a carbocyclic fused ring aromatic compound, and (b) at least one salt or complex of a Group IA, IIA, IIIA or IIB element of the Periodic Table. Such devices exhibit reduce drive voltage while maintaining good luminance.
摘要:
A tandem OLED device includes an anode, a cathode, at least first and second electroluminescent units disposed between the anode and the cathode. The electroluminescent units include an individually selected organic light-emitting layer and an intermediate connector disposed between the first and second electroluminescent units. The intermediate connector includes an n-type doped organic layer having an n-type dopant and an electron-transporting material. The electron-transporting material is a mixture of a first organic compound that has the lowest LUMO value of the compounds in the n-type doped organic layer, in an amount greater than or equal to 10% by volume and less than 100% by volume of the layer; at least one second organic compound exhibiting a higher LUMO value than the first organic compound.
摘要:
An OLED device comprises a light-emitting layer containing a hydrocarbon host material and a light-emitting material of Formula (1): wherein: each Ar represents an independently selected aromatic group; each R1 represents an independently selected alkyl group or aromatic group; n is 1 or 2; Za represents the atoms necessary to form an aromatic ring group; R represents hydrogen or a substituent group; Z represents hydrogen or a substituent group; and L1 and L2 represent independently selected substituent groups; provided that any two adjacent substituents of any of the above groups may join to form a ring.
摘要翻译:OLED器件包括含有烃主体材料的发光层和式(1)的发光材料:其中:每个Ar表示独立选择的芳族基团; 每个R 1表示独立选择的烷基或芳族基团; n为1或2; Z 表示形成芳环基团所必需的原子; R表示氢或取代基; Z表示氢或取代基; L 1和L 2代表独立选择的取代基; 条件是任何上述基团的任何两个相邻的取代基可以连接形成环。
摘要:
An organic light emitting diode (OLED) device comprises a cathode, a light emitting layer and an anode, in that order, and, has located between the cathode and the light emitting layer, a layer containing (a) more than 10 vol % of a carbocyclic fused ring aromatic compound and (b) at least one salt or complex of an alkali or alkaline earth metal. The device provides reduced drive voltage and good luminance.
摘要:
A method of making an OLED device includes forming a color filter array over one surface of a substrate; forming by an evaporation process an anode over the second surface of the substrate and a hole-transporting layer over the anode; moving one or more coated donor elements into a transfer position relative to the hole-transporting layer and transferring emissive material from the donor elements onto the hole-transporting layer to form a light-emitting layer which is capable of emitting white light; and coating by an evaporation process a cathode over the light-emitting layer.
摘要:
Disclosed is an electroluminescent device having a cathode and an anode, an organic light emitting layer (LEL) containing at least one organic host material and a light emitting first dopant, and a layer containing a stabilizing second dopant wherein: a) the organic host material is capable of sustaining both hole and electron injection and recombination of electrons and holes; and b) the first dopant is a green light emitting organic material capable of accepting energy from the electron-hole recombination in the host material and of accepting energy transferred from the second dopant and is selected to have a bandgap energy lower than or equal to the bandgap energy of the second dopant material; c) the second dopant is a stabilizing material capable of accepting energy of electron-hole recombination in the host material, the second dopant being selected to have a bandgap energy lower than the bandgap energy of the host material, but higher or equal to the first dopant; wherein emissions from the first dopant and emissions from the second dopant, if any, have a peak emission in the OLED device less than 570 nm.
摘要:
Powdered organic material s are mixed to form a homogeneous mixture, which includes, at least one dopant component and one host component, to form a pellet for use in thermal physical vapor deposition to produce an organic layer on a substrate for use in an organic light-emitting device. The method of mixing includes, combining organic materials in a powder form and placing the powder organic materials in a container, heating the container in a range of temperatures from 40 to 100° C. for 30 to 100 minutes while purging the atmosphere in the container to a reduced pressure in a range from 10−1 to 10−3 Torr to remove moisture. Filling the container with an inert atmosphere, mixing the powder organic materials in the inert atmosphere to form a homogeneous mixture of powder organic materials, and compacting the homogenous mixture of powder organic materials to form a pellet.