95results about How to "Improve hole transport performance" patented technology

The invention relates to a carbon nanotube/poly Schiff base polymer, a preparation method thereof, and an application thereof. The invention relates to a composite material of carbon nanotube and poly Schiff base, a preparation method thereof, and an application thereof. With the polymer and the methods provided by the invention, problems of existing poly Schiff base of low photoelectrochromic response sensitivity and poor thermal stability are solved. According to the invention, aminated carbon nanotubes, aromatic diamine monomers, and dialdehyde compounds are subject to an in situ polymerization reaction, such that the product is obtained. First, aminated carbon nanotubes and part of dialdehyde compounds are mixed and heated until reflux liquid is generated; then aromatic diamine monomers and rest dialdehyde compounds are mixed and injected in batches, and the reaction is continued, such that the product is obtained. The polymer provided by the invention provides electrochromic, acidichromic, and photochromic performances, and has good thermal stability. Therefore, the polymer can be used in displays and acid-base sensors. The polymer has high electrochromic, acidichromic, and photochromic sensitivity, and provides reversible acidichromic and photochromic performances.

The invention is suitable for the field of quantum dot light emitting diodes (QLED) and provides a QLED and a preparation method thereof. The QLED includes a cathode, a quantum dot luminescent layer, a cavity transmission layer and an anode. The cathode, the quantum dot luminescent layer, the cavity transmission layer and the anode are overlapped in turn. The cavity transmission layer is made of dark blue light main body materials. The preparation method of the QLED includes the following steps of: providing one cathode; depositing the quantum dot luminescent layer on the cathode; and in a vacuum environment, depositing the cavity transmission layer and the anode in turn on the quantum dot luminescent layer.

The invention discloses a thermal activation delayed fluorescence high-molecular compound which is prepared by using asymmetric thermal activation delayed fluorescence micromolecules as luminescent monomer and applying a Suzuki polymerization method. A strategy of connecting TADF micromolecules through a side chain is adopted, and polyspirofluorene, fluorene, carbazole, benzene or triphenylamine is used as a main chain, so that high triplet-state energy level of the main chain is guaranteed, the main chain can be ensured to have good hole transmission performance, prepared TADF high molecules can well inherit TADF characteristics of the micromolecules, and photoluminescence quantum yield and inverse intersystem crossing constant of certain high molecules are even higher than those of the micromolecules. The synthetic high-molecular compound has quite high glass transition temperature and thermal decomposition temperature and has quite good film-forming performance. When the high-molecular compound is applied in electroluminescent devices, highest current efficiency (38.6 cd/A), power efficiency (14.3 lm/W) and external quantum efficiency (16.1%) of current delayed fluorescence high molecules can be acquired by doping a main body and assistant TADF micromolecules.

The invention relates to a POSS hybridized hole transporting material and a preparation method thereof. The material is prepared by at least one POSS monomer containing active groups and at least one organic monomer having hole transporting function by chemical reaction; wherein, the mass ratio between the POSS monomer containing the active groups and the organic monomer having the hole transporting function is 0.1 to 80 : 99.9 to 20. The material can be widely applied to the fields of electroluminescent elements, luminescent apparatuses, diodes, photovoltaic cells and photosensitive components, and the like..

The present invention relates to the field of organic electroluminescence, and can provide an organic compound represented by a general formula (1). The present invention also provides an organic electroluminescent element produced by using the compound as a hole transport material.

The invention relates to an organic electroluminescence material and an organic electroluminescence device with the material. Novel aryl group-dihydrophenanthrene is introduced as one of core groups,a dihydrophenanthrene derivative is obtained and has high molecular weight, the glass transition temperature and decomposition temperature of the material can be increased, the heat stability of the material is improved, and the service life of the device is prolonged; the compound with the dihydrophenanthrene group has excellent hole transport capacity and can be applied to manufacturing of the organic electroluminescence device, used as a hole injection layer, a hole transport layer and the like in the organic electroluminescence device and particularly used as a hole transport layer material in the organic electroluminescence device, the secondary associativity of electronics and holes in an OLED device is improved, the driving voltage can be effectively lowered, the luminescence efficiency of the organic electroluminescence device is improved, and the service life of the organic electroluminescence device is prolonged.

The invention provides a condensed ring-containing triarylamine compound and an organic light-emitting device thereof, and relates to the technical field of organic photoelectric materials. The condensed ring-containing triarylamine compound has excellent hole transport performance, has the advantages of high luminous efficiency and low driving voltage, is a good hole transport material, and can improve the luminous efficiency of an organic light-emitting device, prolong the service life of the organic light-emitting device and reduce the driving voltage of the device; and the condensed ring-containing triarylamine compound provided by the invention is applied to the organic light-emitting device as a covering layer material, so that the light extraction efficiency can be improved, the light-emitting efficiency of the organic light-emitting device is improved, and meanwhile, the service life of the device can be prolonged. The triarylamine organic compound is simple to synthesize and easy to operate, and can be widely applied to the fields of panel display, lighting sources, organic solar cells, organic photoreceptors or organic thin film transistors and the like.

The invention provides a triarylamine organic compound and an organic light-emitting device thereof, and relates to the technical field of organic photoelectric materials. According to the invention, triarylamine is taken as a center and connected with a benzo alicyclic group, so that the electron donating ability of the compound is further enhanced, and the compound has the advantages of excellent hole transport performance, high luminous efficiency and low driving voltage, and is a good hole transport material. The triarylamine organic compound provided by the invention is applied to the organic light-emitting device as a covering layer material, and the light extraction efficiency can be improved, so that the light-emitting efficiency of the organic light-emitting device is improved. The triarylamine organic compound disclosed by the invention is good in film-forming property, high in glass transition temperature (Tg), relatively good in stability, simple in synthesis and easy to operate, and can be widely applied to the fields of panel display, lighting sources, organic solar cells, organic photoreceptors or organic thin film transistors and the like.

The invention relates the preparing method of N, N'- 3-methyl phenyl)-N, N' -diphenylbenzidine, belonging to organic semiconductor hole transport material preparing technique field. The method comprises the following steps: using halogeno-benzene and 3- methyl diphenylamine as raw material, using toluene as dissolvant, using cuprous iodide with N-dimethyltoluamide or diphyridyl as accelerating agent, carrying out reaction in the potassium hydrate system, decolouring, washing, drying, distilling, getting bullion, purifying with the mixture of toluene, hexane and methanol, getting the product. The invention has the advantages of reducing cost, and improving quality. The product can be used as the key material of organic photoconductive drum.

The invention relates to ring metal platinum complexes electro phosphorescence material containing tri-fragrant amine function group. Its manufacturing includes the following steps: linkage of pyridine heterocyclic compound and tri-fragrant amine to form CN bi-tooth ligand; further reacting with platinum ion and OO anion auxiliary ligand to gain the new type single ring metal platinum complexes electro phosphorescence material. The invention mixes ring metal platinum complexes with PFO and PVK to form polymer electro phosphorescence device. It can adjudge electronic structure, hole-injection, and transmission performance to renovate electroluminescence of the device. The invention can be applied to organic electroluminescence field, especially used to manufacture high performance organic electroluminescence device.

The invention relates to a double-sided photoresponse perovskite solar cell and a preparation method thereof. The double-sided photoresponse perovskite solar cell comprises a transparent conductive substrate, a photoanode light absorption layer and a transparent composite counter electrode which are sequentially laminated, wherein the transparent composite counter electrode comprises a transparent conductive macromolecule polymer modified by a quantum dot having multi-exciton characteristic and ultraviolet or visible or infrared light absorption characteristic, and the composite transparent electrode having light response to ultraviolet or visible or infrared light is prepared. The invention also comprises the preparation method of the perovskite solar cell. The low-cost and dual-sided photoresponse perovskite solar cell employs a macromolecule transparent conductive polymer thin film modified by a narrow-band quantum dot as the counter electrode, the light absorption range of the perovskite solar cell is extended to an infrared wave band by design of double-sided photoresponse, meanwhile, the recycle ratio of the device on a visible part can be improved, so that the photoelectric conversion efficiency of the solar cell is improved by over 30%.

The invention relates to the technical field of organic materials and provides a copolymer containing a benzotriazol group. The copolymer has a structural formula (I) shown as the specification, wherein R is an alkyl group from C1 to C32 or alkoxy-monosubstituted phenyl group from C1 to C38, R' is an alkyl group from C1 to C32, and n is an integer of 10-50. The invention also provides a preparation method and application of the copolymer containing the benzotriazol group. The copolymer containing the benzotriazol group contains benzotriazol and carbazole groups and has favorable photoelectric properties, thermal stability and film forming capability, thereby being a novel red-light-emitting copolymer.

The invention provides a dibenzothiophene derivative and an organic light-emitting device thereof, and relates to the technical field of organic photoelectric materials. According to the invention, dibenzothienyl biphenyl fluorenyl is used as a substituent group to be connected with a triarylamine structure, so that the electron donating capability of the compound is further enhanced, and the compound has good hole transport performance and is a good hole transport material. The dibenzothiophene derivative provided by the invention has a special rigid condensed ring structure, can relatively limit the movement of the whole group, significantly reduces the aggregation-state fluorescence quenching phenomenon of the material and improves the stability. In addition, the derivative has good film-forming property and is simple to synthesize and easy to operate, and can be widely applied to the fields of panel display, illumination light sources, organic solar cells, organic photoreceptors ororganic thin film transistors and the like.

The invention provides a fluorene compound and a light-emitting device thereof. Fluorene functional groups with rigid structures are introduced into organic compounds through unique large-steric-hindrance connection sites. The formed fluorene compound has excellent film-forming property and thermal stability, and can be used for preparing organic electroluminescent devices. The fluorene compound disclosed by the invention is particularly suitable for preparing a blue organic light-emitting device, and can be used as a constituent material of a hole transport layer, an electron blocking layer,a light-emitting layer, a hole blocking layer or an electron transport layer. More importantly, the fluorene compound provided by the invention has excellent transmission performance and luminescenceperformance, and can reduce the driving voltage of an organic electroluminescent device, improve the efficiency of the device and prolong the service life of the device when being used as a luminescent layer material, especially a blue light luminescent layer material. The fluorene compound is excellent in device performance, the preparation method is simple, raw materials are easy to obtain, andthe industrial development requirement can be satisfied.

The invention belongs to the field of organic electroluminescent materials, and discloses a bipolar polymer blue light host material, a preparation method and applications thereof. The structural formula of the host material is shown in the description, wherein in the formula, the R represents a C1-C20 alkyl group, and the n represents an integer in a range of 10 to 98. In the provided bipolar polymer blue light host material, the diphenyl phosphine oxide contains an electron-absorbing structure P=O, which is a good electron transmission unit; the carbazole is an important electroluminescent material, and has an excellent hole transmission performance, and the nitrogen atom of carbazole can be modified by an alkyl group so as to improve the solubility and film-forming performance of copolymerized carbazole. Tetraphenyl silicon has a extremely high triplet state energy level, and phosphine oxide-carbazole can be introduced into the main chain of tetraphenyl silicon polymer so as to improve the luminescent efficiency of organic electroluminescent devices.

The present invention provides a hole transport layer which is prepared from carbon quantum dots. The carbon quantum dots are used as the hole transport layer of a perovskite light emitting diode, thehole transport layer has excellent hole transport performance and matched energy level, and the perovskite light emitting layer can be directly prepared on the hole transport layer without additionaloxygen plasma treatment or interface layer modification. The exciton quenching effect between the hole transport layer and the perovskite light emitting layer can also be suppressed effectively by the functional groups on the surface of the carbon quantum dots so that the highly efficient and stable perovskite light emitting diode can be prepared.

The invention provides a hole transport material and a preparation method thereof, application of a hole transport material, and a perovskite solar cell containing a hole transport material. The holetransport material has structures shown in the formula I and/or the formula II. The hole transport material provided by the invention has excellent solubility and a good hole transport performance, can obtain a better film morphology, has adjustable photoelectric performance, and can be applied to perovskite solar cells.

The invention belongs to the field of organic electroluminescent materials, and discloses a bipolar blue-ray phosphor compound, as well as a preparation method and an organic electroluminescent device thereof. The compound has a structural formula as shown in the specification. In the bipolar blue-ray phosphor compound, carbazole is of an n-heterocyclic structure, and has excellent hole transmission performance and relatively high thermal stability and high triplet state level; triazole is an electron transmission unit; therefore the compound has hole transmission property and electron transmission property, hole and electron transmission in a luminescent layer is balanced, and the luminescence efficiency is greatly improved.

The present application relates to an organic compound, an electronic device comprising the organic compound, and an electronic apparatus comprising the electronic device. The main body of the organiccompound is a fused heteroaromatic ring group containing fluorene or silafluorene, a large-plane structure is shown in a three-dimensional space, and an electron-rich aryl amine or heteroaryl amine substituent group is introduced to the ninth position of fluorene or silafluorene, so that the hole transport performance of the compound is excellent.

The invention relates to a carbazolyl triarylamine hole transmission material and a synthesis method thereof. The method comprises the following steps: 1) preparing ethylcarbazole; 2) preparing 3-bromo-N-ethyl-carbazole; 3) preparing 4-(N-phenyl-carbazolyl)aniline; and 4) preparing di-[3-(9-ethyl)-9H-carbazolyl]-[4-(3-(9-phenyl)-9H-carbazolyl)-phenyl]amine. The chemical general formula is disclosed in the specification, wherein Q1 is C2-C6 alkyl-substituted 9-site carbazolyl group, and Q2 is C2-C6 alkyl-substituted carbazolyl group or substituent group with the same structure as Q1. The synthesized compound has excellent hole transmission performance, and has potential application value.