Abstract: An organic electroluminescent material is disclosed. The organic electroluminescent material is novel dehydro-fused-ring compounds with a structure of B(A)2, which may be used as charge transporting materials, charge injection materials, and the like in organic electroluminescent devices. Such novel compounds have very deep LUMO energy level, so they are excellent electron acceptor materials and charge transfer materials. They also have the potential to be excellent hole injection materials and p-dopant materials, and have broad industrial application prospects. An electroluminescent device and a compound formulation are also disclosed.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel dehydrobenzodiimidazole or dehydrobenzodipyrrole or its analogous structure compounds, which can be used as charge transporting materials or charge injection materials or the like in an electroluminescent device. These novel compounds have deep LUMO energy level, and have better potential and excellent application prospecty in the field of charge-transporting materials, charge injection materials or the like. An organic electroluminescent device and a compound formulation are also disclosed.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode and a first organic layer and a second organic layer disposed between the anode and the cathode, where the first organic layer comprises a first compound having a structure of Formula 1, and the second organic layer comprises a second compound having a structure of Formula 3. The electroluminescent device exhibits excellent device performance, for example, higher efficiency and an extremely narrow full width at half maximum. Further provided is a display assembly comprising the organic electroluminescent device.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode, and a first organic layer and a second organic layer disposed between the anode and the cathode, where the first organic layer comprises a first compound represented by Formula 1, and the second organic layer comprises a second compound represented by Formula 2 or Formula 3 and a third compound represented by Formula 4. The first compound can be used as an electron blocking material in the organic electroluminescent device, and the second compound and the third compound can be used as dual host materials in the organic electroluminescent device. The electroluminescent device is capable of maintaining a low voltage or further reducing the device voltage and improving device efficiency and lifetime, thereby improving the overall performance of the device. Further provided is an electronic device including the organic electroluminescent device.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises: an anode, a cathode, an emissive layer disposed between the anode and the cathode, and an electron blocking layer disposed between the anode and the emissive layer, wherein the electron blocking layer comprises an electron blocking material; the capacitance of the organic electroluminescent device satisfies the following condition: at 500 Hz, a maximum capacitance value of the organic electroluminescent device is Cmax, and ?C=C0?Cmax?0.4 nF; the electron blocking material has a hole mobility ?h?65×10?5 cm2/(V·s); a hole-only device of the emissive layer has a drive voltage VHOD@J10?8.0 V at a current density of 10 mA/cm2, and an electron-only device of the emissive layer has a drive voltage VEOD@J10?8.0 V at a current density of 10 mA/cm2.

Abstract: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a compound having a structure of Formula 1, and the compound can be used as an electron blocking material, a hole transporting material or a host material in an organic electroluminescent device. The compound enables the organic electroluminescent device to maintain a low voltage level or further reduce the voltage, have higher device efficiency and/or a longer device lifetime, and provide better overall performance of the device. Further provided are an organic electroluminescent device comprising the compound and a compound composition comprising the compound.

Abstract: Disclosed is an organic electroluminescence device. The organic electroluminescence device has an organic layer having a specific combination in which a hole transporting material is doped with a p-type conductive doped material. The organic electroluminescence device can provide better device performance, such as lifetime improvement and voltage reduction.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a first organic layer and a second organic layer; the first organic layer comprises a first organic material and a first p-type dopant; the second organic layer comprises a second organic material and a second p-type dopant; the first organic layer is in contact with the second organic layer, and the second organic layer is above the first organic layer; and the p-type dopant has a structure represented by Formula 1. The organic electroluminescent device comprising the p-type dopant of a particular structure and having a particular device structure can significantly improve the overall performance of the device and especially improve the lifetime of the device. Further provided is an electronic assembly comprising the organic electroluminescent device.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode, and an organic layer disposed between the anode and cathode; the organic layer includes a first organic layer and a second organic layer; the first organic layer includes a first p-type dopant; the second organic layer includes a second p-type dopant; the first p-type dopant is different from the second dopant; the first organic layer is in contact with the second organic layer, and the second organic layer is above the first organic layer. The organic electroluminescent device including specific p-type dopants and having a specific device structure can significantly improve the overall performance of the device, especially the device lifetime or the device efficiency. Further provided is an electronic assembly including the organic electroluminescent device.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises at least a first organic layer and a second organic layer, wherein the first organic layer has a relatively high electrical conductivity and comprises a first compound with deep LUMO and a second compound with deep HOMO and the second organic layer comprises a third compound having a high hole mobility. The compound combination can reduce an effect of an interface and provide better device performance, such as a reduced voltage and improved device efficiency. Further provided are a display apparatus comprising the organic electroluminescent device and an electronic equipment comprising the display apparatus.

Abstract: Provided are an organic electroluminescent material and device. The organic electroluminescent material is a novel compound having an ortho-substituted dehydrogenated fused-ring structure represented by Formula 1. The compound may be used as a charge transporting material, a charge injection material, and a similar material in an organic electroluminescent device. These novel compounds have an unexpected high sublimation yield due to a structural design. Additionally, these novel compounds can provide excellent performance for organic electroluminescent devices, such as low voltage and high efficiency. Further provided are an electroluminescent device and a compound composition.

Abstract: Provided are an organic electroluminescent material and device. The organic electroluminescent material is a novel compound containing a dehydrobenzooxazole, dehydrobenzothiazole, dehydrobenzoselenazole, dehydrobenzimidazole structure or a similar structure. These novel compounds have properties such as a deep LUMO, strong electron acceptability, a strong charge transfer ability and low volatility. Due to unique properties, these novel compounds have the prospect for wide applications in the field of organic semiconductors, especially the potential for use as p-type conductive doping materials, charge transporting layer materials, hole injection layer materials and electrode materials of the organic semiconductors.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a first organic layer, the first organic layer contains a first organic material and a second organic material that satisfy particular energy level requirements, and the first organic layer has a conductivity greater than or equal to 3×10?5 S/m. The novel organic electroluminescent device effectively controls a hole injection ability so that the overall performance of the device is effectively improved. Further provided are an organic electroluminescent device and a first organic electroluminescent device.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.

Abstract: The device provided herein is an organic electroluminescent device and includes a substrate; a first electrode on the substrate and with high reflectivity; a translucent or transparent second electrode over the first electrode; and a first, a second and a third organic layer included between the first and the second electrode; where the second organic layer has a thickness >80 nm and is made of a second organic material; the third organic layer is a light-emitting layer including at least one light-emitting material and at least one host material; the first organic layer has a conductivity >1×10?4 S/m and <1×10?2 S/m; an energy level difference between HOMO energy level of the second organic material and HOMO energy level of the at least one host material is <0.27 eV; and the first electrode and the second organic layer are in direct contact with the first organic layer.

Abstract: Disclosed is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and a first organic layer disposed between the anode and the cathode, wherein the first organic layer contains a first compound having a structure of Formula 1 and a second compound having a structure of Formula 2. Such a novel material combination composed of the first compound and the second compound may be used in a hole injection layer in the organic electroluminescent device and can endow the organic electroluminescent device with excellent characteristics of low voltage, high efficiency and a long lifetime and provide better device performance. Further disclosed are a display assembly and a compound combination.

Abstract: Provided is a stacked organic electroluminescence device. At least one light-emitting unit of the stacked organic electroluminescent device includes an organic layer including a specific combination of a P-type material with a deep LUMO energy level and a hole transporting material with a deep HOMO energy level. Meanwhile, a P-type material is used as the buffer layer of the charge generation layer between the light-emitting units. The device can offer better device performance and more simplified fabrication process. Further provided is a display assembly including the device.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.

Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.