53results about How to "High triplet energy" patented technology

This invention discloses a novel multicomponent system or a single compound that is capable of performing triplet-triplet annihilation up conversion process. (TTA-UC) A solution or solid film that comprises this TTA-UC system or compound is provided. This system or compound can be used in an optical or optoelectronic device.

Disclosed are: an organic electroluminescent element compound represented by structural formula 1 or 2 below; and an organic electroluminescent element comprising same. In this way, it is possible to provide an organic electroluminescent element compound which can be used as a host, hole-transport material and electron-transport material that has outstanding electrical stability and electron- and hole-transporting ability, a high level of triplet state energy and is able to improve the light-emitting efficiency of phosphorescent light-emitting materials, and an organic electroluminescent element.

The invention relates to spirofluorene xanthene phosphine oxide electro-phosphorescent main materials and synthesis and application methods thereof, belongs to the field of photoelectric material science and technology, and in particular relates to four spirofluorene xanthene organic phosphine oxide materials and application of the materials in the field of organic electronics such as organic electroluminescent materials, organic solar cells, organic field-effect tubes, dye laser, organic nonlinear optical materials, fluorescent probes and the like. The series of materials are obtained by introducing diphenyl phosphine oxide groups to the 2nd site, the 2nd and 7th sites, the 2nd' site and the 2nd' and 7th' sites of spirofluorene xanthene respectively. The series of compounds have good charge transfer performance, thermal stability and high triplet energy level (ET=-2.86eV), and can be used as main materials and applied in phosphorescent devices. When the series of compounds are applied in the organic electro-phosphorescent devices, the maximum external quantum efficiency is 10.78 percent and the maximum brightness is 8,582cd/m<2> in the blue phosphorescent device; and in the green phosphorescent device, the maximum external quantum efficiency is 19.1 percent, and the maximum brightness is 16,943cd/m<2>.

A tetraphenylsilane compound suitable as an organic hole-transport material is represented by a formula:

wherein each dashed line indicates an optional bond; and Ph¹, Ph², Ph³, Ph⁴, Ph⁵, Ph⁶, Ph⁷, Ph⁸, Ph⁹, and Ph¹⁰ are independently optionally substituted phenyl or phenylene.

A composition for use in an organic light emissive device, the composition comprising a fluorescent organic light emissive material and a phosphorescent organic light emissive material of the same colour.

A compound represented by the following formula (1):

wherein C₁ and C₂ are independently a carbon atom; X₁ to X₄ are independently N, CH or C(R₁); L is a group represented by the formula (2): -L₁-(A)_n; L₁ is a group represented by the formula (3); A is alkyl, cycloalkyl, alkoxy, cycloalkoxy, aryl, aryloxy, arylthio, heteroaryl, heteroaryloxy, amino, silyl, diaryloxyphosphinyl, a divalent group corresponding to these groups, fluoro or cyano.

The present invention provides a phosphorescent compound of following formula:

wherein each of X1 and X2 is independently selected from substituted or non-substituted carboline, dibenzofuran, dibenzothiophene and fluorene.

The present disclosure relates to a novel organic compound and an organic electroluminescent device comprising the same, and the organic compound of the present disclosure may be used for an organic material layer of the organic electroluminescent device, thereby improving the light emitting efficiency, driving voltage, lifetime, and the like of the organic electroluminescent device.

The invention relates to a novel arylamine compound which, if used as a hole transport layer (HTL), a light emitting auxiliary layer (HT prime) or a hole injection layer (HIL), can increase hole injection and transport characteristics, thereby providing high efficiency and long life of a device.

The invention relates to a novel organic electroluminescent material and an organic light emitting diode device using the electroluminescent material and belongs to the technical field of organic electron luminescence. A structural formula of the novel organic electroluminescent material is one of I, II and III, wherein Y expresses one of the following carbazoline groups, X expresses hydrogen, a substituted or unsubstituted aromatic group with carbon atom number of 6 to 30, a substituted or unsubstituted heterocyclic aromatic group with carbon atom number of 5 to 30, and a five-membered ring or six-membered ring formed by bonding the Y and the X; heteroatoms in a heterocyclic ring is N, S and O. Experiments show that the novel organic electroluminescent material disclosed by the invention is a phosphorescent compound with high triplet energy; by using the phosphorescent compound as a main body of a luminescent layer of the organic light emitting diode, energy transfer in the luminescent layer is promoted, green light emitting efficiency of an organic luminescent layer is improved, and service life of the organic luminescent layer is prolonged. (The formula is shown in the description.).

Novel dibenzosuberane-based compounds, compositions containing such compounds, and electronic devices containing such compounds as electron transport materials are described herein. Methods for making the dibenzosuberane-based compounds of the present invention are also described.

The invention discloses an organic compound containing a diarylamine substituted spirobifluorene structure, wherein the organic compound has a structure represented by a chemical formula (1). The compound has high glass transition temperature, appropriate HOMO and LUMO energy levels, high Eg (energy gap) and high thermal stability, can sublimate under the conditions of no decomposition and no residue, has a good application effect in OLED devices, and can effectively improve the light emitting performance of the devices and prolong the service life of the devices.

The invention relates to the technical field of display, in particular to a boron-nitrogen heteropolyaromatic ring compound and application thereof. The boron-nitrogen heteropolyaromatic ring compoundhas a structure as shown in a formula I, the compound is based on interaction between a boron-nitrogen structural unit and a surrounding aromatic ring or heteroaromatic ring. The boron-nitrogen heteropolyaromatic ring compound has higher glass transition temperature, higher and balanced charge mobility and more suitable single-triplet state energy, and when the boron-nitrogen heteropolyaromatic ring compound is used as a light-emitting main body material of an organic light-emitting device, the light-emitting efficiency of the device can be greatly improved, and the working voltage of the device is effectively reduced.

A blue phosphorescence compound and an organic light emitting diode using the same are disclosed. The blue phosphorescence compound is represented by Chemical Formula 1 below:

The present invention relates to a novel compound and, particularly, to: a novel compound having excellent hole and electron transport properties, capable of simultaneously implementing high triplet energy and high Tg, and capable of allowing an organic light emitting device to have low driving voltage, low power consumption, high efficiency and long lifetime when applied to an organic light emitting device; and an organic light emitting device containing the same.

Provided are a host material for a blue phosphor, and an organic thin film and an organic light-emitting device including the same. The host material for a blue phosphor is such that a carbazole compound is bonded around a central atom, wherein the central atom is a Group 14 element, and the carbazole compound bonded around the central atom is 3 or 4, wherein the carbazole compound includes carbazole in which an alkyl group is substituted. The host material for a blue phosphor has high triplet energy (ET) and excellent electrical mobility and thermal stability. As a result, the organic thin film, which includes the host material, and the organic light-emitting device, which includes the organic thin film, implement a deep blue color and have excellent luminous efficiency.

The invention discloses a 1,3-biscarbazolyl benzene type phosphorescent host material, and a synthesis method and application thereof, and belongs to the technical field of optoelectronic material application. The blue phosphorescent host material adopting N,N'-biscarbazolyl-1,3-benzene as a fixed structural unit is synthesized through a simple synthesis route, has a relatively high glass transition temperature, good hole and electron transporting capability, good film forming performance, stable properties, a device efficiency of greater than 40 Cd/A and low roll-off efficiency in high brightness, and is an ideal high-efficiency blue phosphorescent bipolar host material. Through the 1,3-biscarbazolyl benzene type phosphorescent host material, a problem that common blue phosphorescent hostmaterials cannot be widely applied due to low glass transition temperatures, poor stability, and high roll-off efficiency at high brightness is solved.

The invention relates to a two-side-adaptable aromatic amine organic compound, wherein phenylene groups are substituted by phenyl groups, especially, a novel compound, wherein diphenyl fluorene, spirobifluorene, triphenylene, dibenzofurane or dibenzothiophene, as well as organic electroluminescent devices including the same.

The present invention relates to a novel arylamine compound, when used as a hole transport layer (HTL), a light emitting auxiliary layer (HT prime) or a hole injection layer (HIL), hole injection andtransport properties can be increased, and high efficiency and long life effects of the device can be provided.

The present invention provides an organic electroluminescent device and an electronic device, wherein an electron blocking layer comprises a compound represented by a chemical formula 1, and an electron transport layer comprises a compound represented by a chemical formula 2. The organic electroluminescent device has a lower driving voltage, higher light-emitting efficiency and power efficiency and longer service life.

The present invention relates to a novel compound and, especially, to a novel compound, which has excellent hole and electron transfer characteristics when applied to an organic light emitting element, can attain high triplet state energy and high Tg at the same time, and allows the organic light emitting element to have a low driving voltage, low consumption power, high efficiency, and long lifespan, and to an organic light emitting element comprising the same.

The invention discloses a polymer, a phosphorescent host material and an electroluminescent device. According to the polymer of the invention, polysiloxane serves as a main chain, and a functional group having an electron and a hole transport properties serves as a side group. The polymer of the invention have higher triplet energy, can be doped as a host material with other phosphorescence dye and can be broadly used in large-area flexible flat displays, polymer light-emitting diodes and electronic imaging devices.