35results about How to "High hole mobility" patented technology

The invention provides a hole transport material, a preparation method thereof and a perovskite solar cell. The chemical structural formula of the hole transport material is # imgabs0 #, wherein each A is independently a heteroatom. A thiophene-methoxy triphenylamine group and a thiophene-methylthio triphenylamine group are introduced into an acridine phosphate side chain, and a series of novel hole transport materials are provided. The hole transport material has higher decomposition temperature, better thermal stability and higher hole mobility, thereby being beneficial to hole extraction and transport. The hole transport material has a deep HOMO energy level matched with perovskite, and can be used in a perovskite solar cell without doping any additive, so that the perovskite solar cell has higher photoelectric conversion efficiency, photovoltaic performance and stability, and the material has repeatability.

The invention discloses an organic-inorganic P (g42T-T) / GaON (Sn) pn junction deep ultraviolet photoelectric detector and a preparation method, the detector sequentially comprises a quartz substrate, a GaON (Sn) thin film, a P (g42T-T) thin film layer, an Ag nanowire / Ti / Au electrode located on the P (g42T-T) thin film layer and a Ti / Au electrode located on the GaON (Sn) thin film, an organic-inorganic P (g42T-T) / GaON (Sn) pn junction is formed on the contact surface of the P (g42T-T) thin film layer and the GaON (Sn) thin film, a built-in electric field is formed, and the P (g42T-T) / GaON (Sn) pn junction is formed. And the photon-generated carriers are efficiently separated. The pn junction deep ultraviolet photoelectric detector is prepared by adopting a plasma enhanced chemical vapor deposition and spin coating drying combined method, the process is controllable, the repeatability is good, and the pn junction deep ultraviolet photoelectric detector is suitable for large-scale production. Meanwhile, the photoelectric detection device does not need to be externally connected with a voltage source, can work in a self-powered mode, has excellent light-dark ratio, high response speed and stable performance, and has wide application prospects in the field of detection of extremely weak deep ultraviolet signals such as corona, electric arc and electric spark.

The utility model discloses an electro -optical modulator is applied to the field of semiconductor technology, include: substrate, substrate surface is provided with photodiode, photodiode includes the epitaxial layer, P type doped area and N type doped area that connect gradually, the lattice constant of epitaxial layer is greater than the lattice constant of P type doped area, the utility model discloses the epitaxial layer of lattice constant greater than P type doped area is arranged to one end of P type doped area, because of the difference of lattice constant between epitaxial layer and P type doped area, will produce compression stress, can improve hole mobility in P type doped area, reduce resistance, and can increase electro -optical modulator bandwidth.

The invention provides a solar cell with MoS2 quantum dots as a hole transport material and a preparation method of the solar cell. The solar cell sequentially comprises a substrate, a transparent conductive film, a conductive polymer, a photosensitive material and a metal electrode from bottom to top, the substrate is selected from glass; the transparent conductive film is selected from indium tin oxide (ITO); the conductive polymer is selected from the group consisting of poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT: PSS); the photosensitive material comprises MoS2 quantum dots. The MoS2 quantum dot has higher hole mobility and is smoother when being used as a hole extraction material, so that the transport characteristic can be obviously enhanced, and the band gap can be easily adjusted by adjusting the size and composition of the quantum dot. Therefore, the MoS2 quantum dot is suitable for being used as an electron / hole material in a solar cell, and mismatch between energy levels in a planar structure or interface defects can cause unexpected recombination loss of photo-generated charge carriers and instability of device performance to a great extent.

The present application relates to the field of organic solar cells, and provides a kind of full asymmetric small molecule donor SMD-Asy and its preparation method and application.The SMD-Asy is connected by Stille coupling from asymmetrically substituted conjugated BDTT core and acceptor unit, and the side chain and main chain structure are all asymmetrically distributed.The preparation of the small molecule donor includes: constructing thiophene and benzo dithiophene diketone BDTT intermediate, introducing long-chain alkoxy side chain under phase transfer catalysis condition, obtaining tin precursor by low-temperature lithiation, and then coupling with halogenated acceptor unit to obtain target molecule.Due to the simultaneous asymmetric design of main chain-side chain, SMD-Asy can regulate the phase separation scale and chain conformation of blended film as the third component in PM6:Y6 system, thereby improving the hole / electron transport balance and mechanical ductility, so that the device can ensure high photovoltaic performance while improving the cracking strain rate.The small molecule donor of the present application is suitable for flexible and stretchable organic solar devices.

The invention provides a triarylamine derivative and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescence. The triarylamine derivative provided by the invention has proper HOMO energy level and good hole mobility, is applied to an organic electroluminescent device as a hole transport layer material, has high energy level matching degree with an adjacent functional layer, effectively reduces the energy barrier needing to be overcome in the hole transport process, is beneficial to hole injection and transport, and improves the hole transport efficiency. According to the present invention, the organic light-emitting material has characteristics of high refractive index, high glass-transition temperature, good film-forming property and high thermal stability, such that the light-emitting efficiency of the device is substantially improved, and the service life is substantially prolonged when the organic light-emitting material is adopted as the covering layer material, such that the organic light-emitting material has characteristics of good refractive index, high glass-transition temperature, good film-forming property and high thermal stability.

According to the main body material, the organic electroluminescent material containing the double main bodies and the organic electroluminescent device, the main body material contains a triarylamine structure and dibenzofuran binaphthyl, the physical and thermal stability of a compound of the triarylamine structure is good, crystallization and aggregation among molecules are not prone to occurring, and the service life is effectively prolonged; the HOMO / LUMO energy level of the material can be adjusted by introducing a triarylamine structure, and the energy level of the material is better matched with the energy level of other materials; the total reflection loss and waveguide loss of a traditional OLED device can be effectively reduced, and the luminous efficiency is improved. The dibenzofuran binaphthalene can improve the fluorescence quantum yield, and has good thermal stability and a proper energy level structure; the triazine structure has relatively good stability and relatively strong electron accepting capability, energy required during electron injection is reduced, and the voltage required for working of the device is reduced; when the luminescent material is used for the organic electroluminescent device, the driving voltage of the organic electroluminescent device is reduced, the efficiency of the device can be improved, and the service life of the device can be prolonged.

The invention discloses a SnO / beta-Ga2O3 power diode and a preparation method of the SnO / beta-Ga2O3 power diode, and a p-type SnO layer is deposited on a beta-Ga2O3 epitaxial layer to construct a SnO / beta-Ga2O3 vertical structure heterojunction diode or a heterojunction barrier diode. The reverse leakage current of the power diode is reduced and the reliability and the breakdown voltage of the device are improved by utilizing the depletion region of the II-type heterojunction, and meanwhile, the heterojunction has lower built-in potential, is expected to reduce the conduction power consumption and can be used for a high-voltage and high-power power electronic system.

The invention relates to a boron-nitrogen doped fluoranthene compound as well as a preparation method and application thereof. The structural formula of the boron-nitrogen doped fluoranthene compound is as shown in a formula 1 or a formula 2, and a boron-nitrogen unit is embedded in a molecular central axis; 1, 8-dibromo-boron aza-naphthalene is used as a raw material, and the boron-nitrogen-doped fluoranthene compound and the derivative thereof are synthesized by a one-pot method through a palladium-catalyzed Suzuki-Miyaura coupling reaction. The method is simple and convenient to operate and mild in reaction condition, and has good structural adjustability and applicability; the obtained compound shows excellent photoelectric properties and can be applied to the field of organic photoelectric functional materials.

The present invention provides an organic electroluminescent device, comprising a substrate, an anode, an organic layer, and a cathode. The organic electroluminescent device comprises a deuterated triamine compound represented by formula I, which has a high hole mobility and good electron blocking ability, and can not only effectively transmit holes but also effectively block electrons in the light-emitting layer, thereby achieving effective recombination of holes and electrons in the light-emitting layer; in addition, the heterocyclic compound represented by formula II is applied to the covering layer of the organic electroluminescent device, thereby improving the light extraction performance and stability of the organic electroluminescent device, and can couple out the light trapped in the device while maintaining the film stable state for a long time. Specifically, the driving voltage is reduced, the luminous efficiency is increased, and the service life is extended.

The application provides a triarylamine compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials.The triarylamine compound has good thermal stability, high hole mobility and a suitable HOMO energy level, and is used as a hole transport material in the organic electroluminescent device, which can effectively reduce the hole transport resistance, improve the injection and transport efficiency of holes in the device, make the efficient recombination of electrons and holes in the light-emitting layer, effectively reduce the driving voltage of the device, improve the light-emitting efficiency of the device, reduce the movement of excitons to the outside of the light-emitting layer, avoid interface light emission, reduce the loss of the device, and prolong the service life of the device.The triarylamine compound can be applied to the fields of display, illumination and organic solar cells.

This application belongs to the field of display technology and relates to a light-emitting device and its fabrication method, as well as a display apparatus. The light-emitting device includes a first electrode, a first charge carrier functional layer, a light-emitting layer, and a second electrode stacked sequentially. The material of the first charge carrier functional layer includes an organic ammonium salt and a doped or undoped first metal oxide. The use of an organic ammonium salt and a doped or undoped first metal oxide in the first charge carrier functional layer of this application can improve the hole mobility of the first charge carrier functional layer, improve the injection balance of holes and electrons in the light-emitting layer, and improve the luminous efficiency and lifespan of the light-emitting device.

The invention provides a triarylamine derivative and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescence. The triarylamine derivative provided by the invention has proper HOMO energy level, good hole mobility, relatively strong electron donating ability, high glass transition temperature, good film-forming property and excellent light extraction efficiency, and can be used as a hole transport layer or a covering layer material to be applied to an organic electroluminescent device, so that hole injection and transmission can be improved, and the light extraction efficiency is improved. The composite probability of excitons in the light-emitting layer is increased, the coupling efficiency of light in the device is improved, generation of Joule heat is reduced, and therefore the light-emitting efficiency of the device is greatly improved, and the service life of the device is greatly prolonged. The triarylamine derivative and the organic electroluminescent device thereof have good application effect and industrialization prospect.

The present application relates to an organic compound, and electronic elements and electronic devices using the same. The organic compound has a structure shown in Formula I, and application of the organic compound to an organic electroluminescent device can significantly improve the performance of the device.

The application discloses an aromatic amine organic compound and an organic electroluminescent device containing the same, and belongs to the technical field of semiconductor materials. The structure of the aromatic amine organic compound is shown in general formula (1). The aromatic amine organic compound has excellent hole mobility and exciton blocking capacity under high current density. When the aromatic amine organic compound is used to form a light-emitting auxiliary layer material of an organic electroluminescent device, the device efficiency is improved and the device life is prolonged.

The application discloses a perovskite quantum dot / organic semiconductor single crystal heterojunction transistor and a preparation method thereof. The perovskite quantum dot / organic semiconductor single crystal heterojunction transistor comprises a gate, an insulating layer, a photosensitive layer, an active layer, a source and a drain. The gate, the insulating layer, the photosensitive layer and the active layer are arranged in parallel and connected in a vertical direction from bottom to top. The source and the drain are arranged in parallel and connected to the upper surface of the active layer. The photosensitive layer is a Cs2AgBiBr6 quantum dot film, and the active layer is a pentacene single crystal. The preparation method of the perovskite quantum dot / organic semiconductor single crystal heterojunction transistor comprises the following steps: covering the Cs2AgBiBr6 quantum dot film on the insulating layer as the photosensitive layer; transferring the pentacene single crystal to the upper surface of the photosensitive layer as the active layer; and arranging the source and the drain on the active layer. The perovskite quantum dot / organic semiconductor single crystal heterojunction transistor obtained by the application shows strong field effect, high on / off ratio and high hole mobility.

This invention discloses an organic electroluminescent device and display device. The organic electroluminescent device includes an anode, a cathode, and at least one light-emitting layer formed between the anode and the cathode. A hole injection layer and a hole transport region are provided between the anode and the light-emitting layer closest to the anode. The hole transport region includes a first hole transport layer and a second hole transport layer with different refractive indices. The first hole transport layer is selected from compounds of Formula 1 or Formula 3, and the second hole transport layer is selected from compounds of Formula 2. This invention's organic electroluminescent device, through improvements in film structure and material matching, ensures both material stability and carrier transport, while simultaneously improving the light field distribution through optimized optical microcavity structure, thus achieving performance enhancement. [Formula 1] [Formula 2] [Formula 3]

The invention discloses a quinoneterpolymer capable of being processed by an environment-friendly solvent as well as preparation and application of the quinoneterpolymer. The structure of the copolymer is as follows: # imgabs 0 #, wherein # imgabs 1 # m: n = 75: 27. The quinoneterpolymer belongs to a novel polymer, the preparation process is simple, industrial implementation can be realized, and the yield is high; when being used as a polymer semiconductor, the polymer can be processed by using an environment-friendly solvent, and the hole mobility is up to 2.09 cm < 2 > V <-1 > s <-1 >.

The present invention relates to the technical field of organic electroluminescent materials, and in particular to a spirobiindene derivative and its application in electronic components and electronic devices. The structural formula of the spirobiindene derivative is shown in formula (I); the compound shown in formula (I) provided by the present invention has a spirobiindene mother core structure. The compound is applied in an organic electroluminescent element to significantly reduce the driving voltage, improve the luminous efficiency and lifespan.

The application belongs to the technical field of organic synthesis, and discloses a non-fused ring thiophene polynuclear hole transport material and a preparation method and application thereof. The hole transport material takes a non-fused ring thiophene polynucleus as a central core and methoxytriphenylamine as a peripheral end group. The S and O atoms of the non-fused ring thiophene polynucleus are conducive to forming a non-covalent conformational lock, so as to make the material have excellent solubility and film-forming property, and effectively enhance molecular accumulation and improve hole transport performance. In addition, the central core polynuclear sulfur atom characteristics promote the interface action of the hole transport layer and the perovskite layer, are conducive to passivating the interface defects of the perovskite layer, and further improve the transport and separation efficiency of carriers. The non-fused ring thiophene polynuclear hole transport material is applied to a perovskite solar cell, the device open-circuit voltage is 1.130 V, the short-circuit photocurrent density is 24.07 mA cm ‑2 , the fill factor is 0.7860, and finally a high photoelectric conversion efficiency of 21.38% is obtained, which shows great commercial application value.

The present invention relates to an organic compound and an electronic component and an electronic device using the same. The organic compound has a structure shown in Formula I, and the organic compound is applied to an organic electroluminescent device to significantly improve the performance of the device.

The invention discloses an aromatic amine compound and an organic electroluminescent device containing the aromatic amine compound, and belongs to the technical field of organic electroluminescent materials, the structure of the aromatic amine compound is as shown in a general formula (1): # imgabs0 #, and the aromatic amine compound has excellent hole mobility under high current density; when the aromatic amine compound provided by the invention is used for forming a hole transport layer material of an organic electroluminescent device, the effects of improving the efficiency of the device and prolonging the service life of the device are shown.

The invention relates to an organic compound, an organic electroluminescent device and an electronic device. The organic compound provided by the invention has a structure as shown in formula I. When the organic compound is applied to an organic electroluminescent device, the performance of the device can be remarkably improved.

The invention discloses a hole transport material based on thieno [3, 2-b] indole and a synthesis method thereof. A central core molecule thieno [3, 2-b] indole core is used as a module to be applied to the perovskite solar cell hole transport material, different carbon branched chains, methoxyaniline and 4-methoxy-N-(4-methoxyphenyl)-N-phenylaniline are introduced, and the introduction of different groups can effectively improve the energy level and hole mobility of molecules, so that the hole transport material can be applied to the perovskite solar cell hole transport material. Therefore, the material can have better hole transport capacity, the performance of a device is improved, the photoelectric conversion efficiency is improved, and the stability of the device is improved.

The present invention discloses a scorpion-type non-doped organic small molecule hole transport material and its preparation method and application. The hole transport material is based on dithiophene-thiophene-pyrrole as an acceptor unit, and triphenylamine donor units are introduced into the thiophenes at both ends of the acceptor unit and the middle pyrrole, respectively, to form a scorpion-type hole transport material. The material has the advantages of good planarity, high degree of conjugation, high hole mobility and adjustable energy level, and is suitable for the hole transport layer of perovskite solar cells. The preparation method of the present invention has the characteristics of easy operation, simple and easy to obtain raw materials, low cost, high yield, etc. The perovskite solar cell using the hole transport material of the present invention is composed of a perovskite layer, a hole transport layer, an electron transport layer and an electrode, and the hole transport layer adopts a scorpion-type non-doped organic small molecule hole transport material. The current density of the perovskite solar cell is 24.44mA / cm 2 , the open circuit voltage is 0.82V and the photoelectric conversion efficiency is 16.85%.

The application provides an organic compound with benzene as a core and a preparation method and application thereof, and an organic electroluminescent device, and belongs to the technical field of semiconductors. The organic compound provided by the application has benzene as a core and is connected with an electron-donating group, has high hole mobility, and has high hole transport rate, which can effectively reduce the starting voltage of the device and improve the efficiency of the organic electroluminescent device. The triamine structure in the compound can reduce the crystallinity of the molecule, reduce the planarity of the molecule, prevent the molecule from moving on the plane, and thus improve the thermal stability of the molecule. Meanwhile, the structure of the compound provided by the application makes the distribution of electrons and holes in the light-emitting layer more balanced, improves the hole injection and transport performance under the appropriate HOMO energy level, and can improve the current efficiency and service life of the device.

The invention provides an arylamine compound and an organic electroluminescent device thereof, and particularly relates to the technical field of organic photoelectric materials. When the arylamine compound is used as a hole transport layer material, the arylamine compound has very high hole mobility and proper HOMO energy level, so that holes are effectively injected and transmitted between an electrode / organic layer interface and an organic layer / organic layer interface; when the material is used as a covering layer material, light loss caused by reflection of nearby electrodes during light emitting can be reduced, the light emitting efficiency of a device is further improved, and the service life is prolonged; when the compound is used as a charge generation layer material, light-emitting layers can be connected in series, so that a device has higher light-emitting efficiency and longer service life, the preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of panel display, illumination light sources, organic solar cells, organic photoreceptors or organic thin film transistors and the like. Good application effects and industrialization prospects are realized.

The invention relates to a hole transport layer material and a preparation method thereof, and a perovskite cell and a preparation method thereof. The hole transport layer material lowers the HOMO energy level, has better energy level matching with wide-band-gap perovskite, can accelerate hole extraction, and improves the efficiency of the wide-band-gap perovskite cell.

The invention provides an organic electroluminescent material composition and an organic electroluminescent device comprising the same, the composition comprises a first compound shown in a chemical formula I and a second compound shown in a chemical formula II, a layer where the first compound is located is tightly attached to a layer where the second compound is located, the energy level of the composition is matched, and the energy level of the composition is matched with the energy level of the second compound. The absolute value of the energy range delta HOMO is small, and the hole mobility and the interface contact condition are good; the first compound provided by the invention is used as a hole transport layer, and the second compound is used as a light-emitting auxiliary layer to be applied to the organic electroluminescent device, so that the organic electroluminescent material composition can obviously reduce the driving voltage of the organic electroluminescent device, improve the current efficiency of the organic electroluminescent device, and improve the luminous efficiency of the organic electroluminescent device. According to the organic electroluminescent material composition provided by the invention, the service life of the organic electroluminescent device is prolonged, and the threshold voltage of the organic electroluminescent device can be improved, so that the crosstalk phenomenon is effectively avoided, and the defects in the prior art are overcome. [Chemical Formula I] # imgabs0 # [Chemical Formula II] # imgabs1 #

The invention relates to the technical field of perovskite solar cells, in particular to a crown ether hole transport material, a preparation method thereof and a perovskite solar cell. According to the material, a crown ether ring is used as a core functional group, and a conjugate conductive unit and a self-assembly anchoring group are connected to form an anchoring group-conjugate skeleton-crown ether ring structure. According to the preparation method, the crown ether hole transport material is synthesized step by step through two steps of Suzuki coupling, nucleophilic substitution, Arbuzov reaction and hydrolysis reaction. The material can be accurately matched with perovskite cations, passivate surface defects and improve hole mobility and interface stability, the photoelectric conversion efficiency of a small-area device breaks through 25.5%, film forming is uniform, synthesis is easy and convenient, cost is low, large-area preparation is adapted, and the problems that an existing material is low in efficiency and poor in stability can be remarkably solved.