Abstract: Provided are an organic electroluminescent material and device. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1. When applied to organic electroluminescent devices, these metal complexes can provide very good device performance, especially an extended device lifetime and improved device efficiency and have a huge application prospect in aspects of white and low blue light sources. Further provided are an organic electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.

Abstract: An organic electroluminescent material and a device thereof are disclosed. The organic electroluminescent material uses a compound having a novel carbazole structure, and can be used as hole blocking material, host material in an electroluminescent device. These novel compounds can provide better device performance, such as obtaining device performance of very low driving-voltage, high efficiency, and long lifetime.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device is a blue delayed fluorescent device including an anode, a cathode, an emissive layer disposed between the anode and the cathode and a hole blocking layer disposed between the emissive layer and the cathode, where the hole blocking layer comprises a hole blocking material having a structure of Formula 1, and the emissive layer comprises a first host material, a second host material and a blue delayed fluorescent material having a structure of Formula 3. The blue delayed fluorescent device exhibits excellent overall device performance, such as higher efficiency and longer lifetime. Further provided are a light-emitting device comprising a blue delayed fluorescent unit, a green phosphorescent unit and a red phosphorescent unit and a display assembly comprising the blue delayed fluorescent device and the light-emitting 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 the cathode, where the organic layer at least comprises a first compound having a structure of H-L-E and a second compound having a structure of Formula 2. The first compound and the second compound may be used as host materials in the organic electroluminescent device. The electroluminescent device can have a longer device lifetime while maintaining a high level of current efficiency or further improving the current efficiency, and can provide better device performance. Further provided are an electronic apparatus and a compound combination.

Abstract: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1. These new compounds, when applied to an electroluminescent device, can obtain very excellent device performance, such as a reduced device voltage and improved current efficiency, power efficiency and external quantum efficiency. These new compounds can comprehensively improve the device performance in various aspects and finally significantly improves overall device performance. Further provided are an organic electroluminescent device comprising the metal complex and a composition comprising the metal complex.

Abstract: Provided is a heterocyclic compound having cyano-substitution. The compound has a structure represented by Formula 1. These novel compounds are applicable to electroluminescent devices and can provide better device performance, especially improved device efficiency such as power efficiency, current efficiency and external quantum efficiency. Further provided are an organic electroluminescent device comprising the compound and a compound composition comprising the compound.

Abstract: A metal complex containing three different ligands which may be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These new complexes can not only achieve device performed desired to be adjusted or improved by adjusting substituents but also have the effect of effectively controlling increase of the evaporation temperature. Further disclosed are an electroluminescent device and a compound formulation including the metal complex.

Abstract: Provided is a light-emitting material with polycyclic ligand. The light-emitting material is a metal complex with polycyclic ligand and may be used as a light-emitting material in an electroluminescent device. While maintaining a very narrow FWHM, these novel metal complexes can better adjust the light-emitting color of the device, reduce the driving voltage of the device or maintain the driving voltage at a low level, improve device efficiency, greatly increase the lifetime of the device, and provide better device performance. 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 includes an anode, a cathode and an organic layer disposed between the anode and the cathode, wherein the organic layer at least comprises a first compound having a structure of H-L-E and a second compound having a structure of Formula 2. The first compound and the second compound can be used as the host material in organic electroluminescent devices. The electroluminescent device has a long device lifetime and can provide better device performance. Further provided is a compound composition.

Abstract: Provided is a luminescent material having a multi-substituted phenyl ligand, wherein the luminescent material is a metal complex, the metal complex has a general formula of M(La)m(Lb)n(Lc)q, and the first ligand La has a structure of Formula 1. The metal complex can be used as luminescent materials in organic electroluminescent devices. This new metal complex can improve the device efficiency and provide more saturated deep red luminescence, thereby providing better device performance. Further provided are an electroluminescent device and a compound composition.

Abstract: Disclosed are organic electroluminescent material and device. The organic electroluminescent material is a metal complex with a structure of Formula 1. These novel metal complexes can be used in electroluminescent device, and show more excellent performance, for example, they can reduce the driving voltage and full width at half maximum, obtain more saturated light emission, improve the efficiency and the lifetime of the device, and finally, it can improve the comprehensive performance of the device significantly.

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: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1A and a ligand Lb having a structure of Formula 1B. Such new types of compound can be applied to an electroluminescent device to improve luminescence performance, efficiency or a lifetime of the device, exhibit more saturated luminescence and significantly improve overall performance of the device. Further provided are an electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material includes a metal M and at least one C{circumflex over (?)}N bidentate ligand La coordinated with the metal M, the maximum emission wavelength of the photoluminescence spectrum of the organic electroluminescent material at room temperature is greater than or equal to 410 nm and less than or equal to 700 nm, and the emission spectrum area ratio of the organic electroluminescent material is less than or equal to 0.145. The metal complex has significant advantages in organic electroluminescent devices, in particular the improvement of device efficiency. Further provided are an organic electroluminescent device including the metal complex and a compound composition including the metal complex.

Abstract: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1A and a ligand Lb having a structure of Formula 1B. Such new compounds each have a lower evaporation temperature, which is conducive to industrial application of the material and can reduce energy consumption in industrialization. Such metal complexes are used as a light-emitting material in an electroluminescent device. When applied to the electroluminescent device, such metal complexes can provide very excellent device performance, especially an improved device lifetime. Further provided are an organic electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.

Abstract: An organic light-emitting material contains a 6-silyl-substituted isoquinoline ligand. The organic light-emitting material is a metal complex containing a 6-silyl-substituted isoquinoline ligand and may be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These new complexes can provide redder and saturated emission and meanwhile demonstrate a significantly improved lifetime and efficient and excellent device performance. Further disclosed are an electroluminescent device and a compound formulation including the metal complex.

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 electroluminescent device. The electroluminescent device includes an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer includes at least a first compound having a structure of H-L-E and a second compound having a general formula of M(La)m(Lb)n(Lc)q. The novel material combination consisting of the first compound and the second compound can enable the electroluminescent device to obtain a lower voltage, higher efficiency and an ultra-long lifetime and can provide better device performance. Further provided are a display assembly and a compound combination.

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.