21results about How to "Improve current efficiency" patented technology

This invention provides a carbazole compound, an organic electroluminescent device, and a display device, relating to the field of organic optoelectronic display technology. Through structural design of the carbazole compound, this invention yields a carbazole compound with excellent performance. The organic electroluminescent device prepared using this compound as the host material for the light-emitting layer exhibits low driving voltage and high current efficiency.

The present application provides an organic material composition and its application, the organic material composition includes the fused heterocyclic compound containing quinoline structure and hole transport type compound, the fused heterocyclic compound containing quinoline structure has the structure as shown in formula (1), the hole transport type compound has the structure as shown in formula (2).The composition of the present application makes the organic electroluminescent device have lower driving voltage (3.85 V or less), higher current efficiency (25 Cd / A or more) and longer life (267 h or more).

The application provides a composition containing an indolocarbazole compound, an intermediate and an organic electroluminescent device. The composition contains at least one first compound and at least one second compound; the first compound is obtained by fusing a group shown in formula I-A with any two adjacent carbon atoms on ring A in a group shown in formula I; and the second compound is selected from any one of compounds shown in formulae II-1, II-2 and II-3. The composition provided by the application can be used as a light-emitting layer host material to prepare an organic electroluminescent device, and the prepared organic electroluminescent device has a lower driving voltage, a higher current efficiency and a longer service life.

This invention discloses an aluminum-containing heavy water-based electrolyte, its preparation method, and its applications. The electrolyte comprises a solvent and a solute. The solvent includes heavy water, a deuterated solvent, and a low-barrier hydrogen bond reconstructing agent. The solute comprises a main aluminum salt and an auxiliary monovalent metal salt. This electrolyte can construct low-barrier hydrogen bonds in solution by controlling the solvent composition, significantly reducing the activity of water in the solution, improving the electrochemical stability of the solution, and suppressing side reactions. Simultaneously, it improves the electrochemical reaction behavior of aluminum in the solution and at the electrolyte / electrode interface, which is beneficial for improving the electrochemical deposition efficiency of aluminum in aqueous solution.

This invention belongs to the field of metal material corrosion protection technology, specifically relating to a highly active aluminum alloy sacrificial anode for full ocean depth and its preparation method. The sacrificial anode uses Al as the main raw material, with added alloying elements: Zn, In, Ga, Mg, Ti, Ca, and Mn. The preparation method involves first heating Al and Zn to 750–1000℃, then adding In, Ga, Mg, Ti, Ca, and Mn, and finally casting at a temperature of 700–750℃. By adding Ca, an octet aluminum alloy sacrificial anode for full ocean depth is formed. The activation ability is improved by the dissolution and redeposition of In and Ga, the disruption of the continuity and density of the oxide layer by Zn and Mg, and the activation of the Al matrix surface by micron-level dot pairs. At the same time, Ti refines the grain size, resulting in a uniform and segregated distribution of alloying elements, avoiding internal self-corrosion, and improving current efficiency. It can be applied to full ocean depth environments from 0 to 10000 meters, with a current efficiency of 90–95%.

The application discloses a preparation method and application of an inert metal tungsten anode for low-temperature electrolytic aluminum of ionic liquid, and relates to the technical field of electrolysis. The preparation method of the porous tungsten inert anode provided by the application comprises raw material proportioning, raw material mixing, vacuum sintering and electrode purification. The method combines a discharge plasma sintering process with an electrochemical dissolution process to prepare the porous tungsten anode with a pore diameter of 1-10 microns. The anode has excellent electrochemical stability and corrosion resistance, can effectively promote the desorption of anode chlorine gas bubbles in the electrolysis process, and can effectively reduce the voltage of the low-temperature electrolytic aluminum system of ionic liquid.

This invention discloses a power amplifier and electronic device employing a thin-gate device. The power amplifier uses a fully thin-gate low-threshold voltage transistor architecture, amplifying signals through multiple parallel cascode amplification units. The gate of the input stage transistor is coupled to the input signal via a DC-blocking capacitor, and the drain of the cascode transistor is connected to the power supply via an inductor. By introducing a segmented complementary gain control strategy—selectively turning off the input stage transistor while keeping the cascode transistor on in the high-power output range, and selectively turning off the cascode transistor while keeping the input stage transistor on in the low-power output range—this invention overcomes the performance limitations of traditional hybrid gate oxide schemes, significantly reducing parasitic capacitance and dynamic power consumption, and improving conversion efficiency. It simultaneously resolves the contradiction between the withstand voltage safety and deep turn-off of thin-gate devices, ensuring reliability across the entire power range; and simplifies the manufacturing process and optimizes current efficiency.

This invention relates to a Ru / C cluster catalyst for the electrocatalytic PTA-to-CHDA reaction, its preparation method, and its application. The method employs a molten salt electrolyte containing carbonate; a Ru-containing compound and a morphology control agent are mixed with the molten salt electrolyte; heating is performed to form an ion-conducting molten electrolyte system; electrolysis at constant potential or constant current allows the Ru element in the precursor and the C element in the carbonate to be co-electrodeposited on the cathode surface, forming a supported metal catalyst; after electrolysis, cooling is performed, and the catalyst is collected from the cathode, washed, and dried to obtain the supported metal catalyst. This invention provides a one-step in-situ generation of amorphous carbon-supported supported Ru / C catalysts, effectively simplifying the complex multi-step preparation process of traditional catalysts, reducing energy consumption and production costs, and solving the problem of existing technologies struggling to prepare Ru-group cluster catalysts with uniform size, good dispersibility, and high stability.

This invention provides a multifunctional bipolar membrane electrodialysis device, belonging to the technical field of electrodialysis separation equipment. The multifunctional bipolar membrane electrodialysis device includes a working chamber, a stacked membrane assembly, a brine storage tank, an acid storage tank, an alkali storage tank, an electrode liquid storage tank, and four peristaltic pumps. The four peristaltic pumps are fixed inside the working chamber, and the stacked membrane assembly is fixed at the front end of the working chamber. The left electrode chamber frame plate, acid chamber frame plate, brine chamber frame plate, alkali chamber frame plate, and right electrode chamber frame plate are all square flat plates with flow channels formed between the inlet and outlet channels. The flow channels contain horizontally staggered guide plates, each with a row of serrations on its lower surface. The horizontally staggered guide plates combined with the serrated flow disturbance structure in the flow channels force solution agitation and diffusion, prolonging the flow time of the solution within the flow channels, covering the entire membrane surface, eliminating dead zones and short-circuit flow, and significantly improving ion migration efficiency and current efficiency.

This invention provides an organic compound, an organic electroluminescent device, and a display device. The organic compound has the structure shown in Formula I. In this invention, by designing the compound structure, the obtained compound is used as the light-emitting layer material of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency, and longer lifespan.

This invention provides a carbazole compound, an intermediate, a composition, and an organic electroluminescent device. The carbazole compound has the structure of Formula I. This invention designs the structure of the carbazole compound to make it suitable as the main material for the light-emitting layer of an organic electroluminescent device, resulting in an organic electroluminescent device with lower driving voltage, higher current efficiency, and longer lifetime.

Disclosed are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex comprising a metal M and a ligand L having a structure of formula 1 a The metal complex has a lower evaporation temperature, which is conducive to reducing energy consumption in the device preparation process, and can be applied to an electroluminescent device as a luminescent material. When the metal complex is applied to an electroluminescent device, higher device efficiency and longer device lifetime can be achieved, and better device performance can be provided. An electroluminescent device comprising the metal complex and a compound composition comprising the metal complex are also disclosed.

The application provides an anthracene compound containing a diphenyl pentaheterocyclic substituent, an intermediate and an organic electroluminescent device. The anthracene compound containing the diphenyl pentaheterocyclic substituent has a structure of formula I. The anthracene compound containing the diphenyl pentaheterocyclic substituent provided by the application can be used as a main body material of an OLED device light-emitting layer, so that the OLED device has a lower driving voltage, a higher current efficiency and a longer service life.

This invention discloses an aminated graphene oxide-based bipolar membrane and its preparation method, belonging to the field of bipolar membrane technology. The bipolar membrane is composed of a sulfonated polyphenylene sulfone cation layer, an aminated graphene oxide interlayer, and a quaternized polyphenylene ether anion layer stacked sequentially. This invention utilizes the aminated graphene oxide as the interlayer, taking advantage of its two-dimensional sheet-like morphology, abundant catalytic groups, and cross-linking effect to achieve a bipolar membrane with low water dissociation voltage, good interlayer compatibility, and structural stability. When applied to electrodialysis, it improves alkali concentration and current efficiency compared to commercially available membranes, while reducing energy consumption, showing promising application prospects in acid and alkali preparation, resource recovery, and other fields.

The application provides an anthracene ketone compound and a preparation method and application thereof, and an organic electroluminescent device, and belongs to the technical field of semiconductors.The anthracene ketone compound provided by the application has the characteristics of strong rigidity, difficulty in crystallization and aggregation between molecules, good film-forming property, high glass transition temperature and high thermal stability, so that the compound can keep the stability of a film layer after material film-forming when applied to an OLED device; the current efficiency of the device is greatly improved when the organic compound is applied to the OLED device as an organic electroluminescent functional layer material; and the service life of the device is obviously improved. The results of examples show that the anthracene ketone compound provided by the application is used as a light-emitting layer material, the current efficiency of the obtained organic electroluminescent device is 147.1-157.3, and the service life is 351.6-373.9h.

This invention relates to the field of wastewater treatment technology, specifically disclosing a photoanode material, a photoanode, its preparation method, and its application in wastewater treatment. The photoanode material comprises an FeSe2 array layer and a Bi2O2WO4 layer supported on the FeSe2 array layer. FeSe2 has a narrow band gap, good light absorption performance, and photogenerated charge separation capability, which can sensitize other semiconductors with wider band gaps to form heterojunctions, promoting the improvement of photocurrent density and electron quantum yield, and enhancing the photoelectric conversion efficiency of the catalytic material. Bi2O2WO4 is composed of [Bi2O2]. 2+ Layers and [WO4] 2‑ The vertically alternating layers facilitate the separation of photogenerated electrons and holes, thereby enhancing the catalytic oxidation activity of the electrode. The combination of Bi₂O₂WO₄ and FeSe₂ improves their respective solar photoresponse capabilities and photoelectrocatalytic performance, offering significant advantages in environmental engineering.

The application provides a heterocyclic compound and application thereof, and relates to the technical field of organic photoelectricity. The heterocyclic compound in the application can be used as an electron transport layer material in an organic electroluminescent device, and can effectively reduce the driving voltage of the organic electroluminescent device, improve the current efficiency of the organic electroluminescent device, and improve the service life of the organic electroluminescent device.

The application discloses a photovoltaic device and a preparation method thereof, and belongs to the technical field of photovoltaic devices. The photovoltaic device comprises, from bottom to top, a substrate, an electron transport layer, a YbBr3 spin-coated modified PbS-PbX2 quantum dot layer, a PbS-EDT layer and a metal layer. In the photovoltaic device, YbBr3 is spin-coated on the surface of a PbS-PbX2 quantum dot layer after halogen ligand exchange is completed, so that Yb 3+ / Br ‑ forms an ionic coordination bond on the surface of PbS; first, by utilizing the quantum confinement characteristics of Yb 3+ , two 980 nm near-infrared photons are emitted after visible light with higher energy is absorbed, and then the photons are absorbed by adjacent PbS quantum dots again, so that the utilization rate of the photons is improved, and the short-circuit current and overall power conversion efficiency are significantly improved; second, Yb 3+ / Br ‑ passivates the surface vacancy defects, reduces the surface trap density, prolongs the carrier lifetime, improves the open-circuit voltage and the fill factor.

The application belongs to the technical field of OLEDs, and specifically comprises an organic electroluminescent material, an organic electroluminescent device comprising the same, and a display assembly. The structural general formula of the organic electroluminescent material is shown as formula I. The organic electroluminescent material has a P=O five-ring structure, and due to its strong electron-withdrawing ability, the material has excellent hole injection layer doping ability. The organic electroluminescent material shown as formula I in the application is used as a p-type dopant material in combination with a hole transport material shown as formula II to prepare an organic electroluminescent device, which can be kept at a lower driving voltage, has higher current efficiency and a longer service life.I, II

This invention relates to the field of aluminum electrolysis technology and provides a method for optimizing the feeding strategy of an electrolytic cell based on deep learning. The method includes the following steps: acquiring current data of the aluminum electrolytic cell; acquiring energy consumption data and alumina feeding data of the aluminum electrolytic cell; dividing the aluminum electrolytic cell into feeding areas according to the feeding mechanism; extracting features from the current data, energy consumption data, and alumina feeding data using a deep learning model; generating a first feeding strategy for the aluminum electrolytic cell based on the current data features output from the current data path; and evaluating the reliability of the first feeding strategy and optimizing the feeding strategy based on the energy data features output from the energy data path and the feeding data features output from the feeding data path. This invention achieves the perception and multi-objective collaborative optimization of the feeding area by acquiring the current, energy, and feeding data of the aluminum electrolytic cell and constructing a deep learning model, thereby optimizing the feeding strategy for large aluminum electrolytic cells.

This invention provides an anthracene compound containing a naphthyl substituted group. The naphthyl-substituted anthracene compound has the structure shown in Formula I. The naphthyl-substituted anthracene compound provided by this invention can be used as the main material for the light-emitting layer of an OLED light-emitting device, enabling the OLED light-emitting device to have a lower driving voltage, higher current efficiency, and longer lifetime.