173results about How to "Improve current efficiency" patented technology

The invention discloses an internal circulation rotating impinging stream electro-catalysis device and method for treating organic wastewater, and belongs to the technical field of sewage treatment equipment. The upper part of an inner cavity of an electrochemical reactor of the device is an electrochemical reaction area, and the lower part is a rotational flow generation area; the electrochemical reaction area comprises an outer ring anode, an annular net-shaped cathode, an inner ring anode and a central fixing shaft which are sequentially and coaxially sleeved from outside to inside, and the rotational flow generation area comprises an inner spiral generator and an outer spiral generator which are arranged on a spiral central shaft in a sleeving manner. The impinging stream technology and the electro-catalysis technology are combined, internal circulation impinging stream efficient treatment on organic wastewater is achieved through the rotational flow generation area, the device has the advantages of being high in treatment efficiency, small in occupied space, low in operation energy consumption and the like, the problem that bubbles adhere to the surface of an electrode can be solved, strong turbulent flow is formed through impinging, reaction dead zones are reduced, and the service life of the device is prolonged. Mass transfer in the electrochemical degradation device is enhanced, and the purposes of automatic operation and efficient degradation are achieved.

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to a boron-nitrogen compound and an organic electroluminescent device comprising the same. The boron-nitrogen compound disclosed by the invention has good electron and hole receiving capability, and interaction among luminescent molecules can be effectively inhibited by introducing a spirocyclic group with large steric hindrance. And the energy transmission performance between a subject and an object or a sensitizer can be improved by the large conjugated spiro structure unit. Specifically, the boron-nitrogen compound provided by the invention is used as a functional layer, especially as an organic electroluminescent device manufactured by a luminescent layer, the current efficiency is improved, the lighting voltage is reduced, and meanwhile, the service life of the device is greatly prolonged. Therefore, after most electrons and holes are compounded, energy is effectively transferred to the boron-nitrogen compound, so that high luminous efficiency is realized.

The invention provides an oxazolobenzocarbazole compound, an organic electroluminescent device and a display device, and relates to the technical field of organic electroluminescent materials. The oxazolobenzocarbazole compound disclosed by the invention has a proper energy level and good electron mobility, and can be used as an electron transport material to effectively reduce the potential barrier of electron transport and effectively block the diffusion of holes to one side of an electron transport layer, so that the luminous efficiency of a device can be further improved, the driving voltage can be reduced, and the service life can be prolonged.

The invention belongs to the field of organic electroluminescence, and particularly relates to a fused-ring carbazole tetradentate metal platinum (II) complex, an electronic device and application of the fused-ring carbazole tetradentate metal platinum (II) complex. According to the invention, interaction among molecules is reduced through introduction of diphenyl, and a ring-fused carbazole system is introduced to different positions of carbazole, so that the component proportion of a localized state (LE) in an excited triplet state of the cyclotetradentate platinum (II) complex is increased, the cyclotetradentate platinum (II) complex has low acromion, and the molecular luminescence color purity of the material is improved. The material provided by the invention has good chemical stability and thermal stability, and is easy to prepare an evaporation type OLED device. After being combined with a fluorescent doping material, the material can balance hole and electron transmission, so that energy transmission between a subject and an object is more efficient. The current efficiency and the service life of the organic electroluminescent device manufactured by using the compound as a luminescent layer are obviously improved, and the lighting voltage is obviously reduced. Especially, the photochromic purity of the device can be improved by jointly applying the compound and a phosphorescent sensitized boron-containing compound.

The invention relates to the technical field of organic electroluminescent devices, and discloses a fluorine-containing pyrimidine derivative organic compound and application thereof, a perovskite solar cell and an organic electroluminescent device. The organic compound has a structure as shown in a formula (I). The fluorine-containing pyrimidine derivative organic compound provided by the invention can improve the performance of a device, reduce the driving voltage, improve the current efficiency and prolong the service life of the device. # imgabs0 #

The invention discloses an electrochemical system and method for treating nitrogen-containing organic wastewater based on a double-sided cathode. The electrochemical system comprises a reactor, an aeration device, a power supply, an anode and the double-sided cathode, and the double-sided cathode is prepared by loading a functional catalyst through a double-sided rolling coating process. Under the condition of not adding exogenous iron ions and H2O2, the side, with the electro-catalytic degradation function, in the double-sided cathode generates. OH in situ through the oxygen reduction reaction of two electrons and the electro-Fenton process, so that efficient degradation of organic pollutants is realized; meanwhile, NO3 <-> can be converted into N2 to be discharged under the synergistic effect of the sides, with the denitrification function, of the DSA and the double-sided cathode, organic pollutants and total nitrogen are synchronously removed, the denitrification function and the electrocatalytic degradation function are integrated in the single cathode, the device is more compact and efficient, the current efficiency and the mass transfer efficiency are improved, and the device is suitable for large-scale popularization and application. The complexity and the occupied area of the system are reduced, and the energy consumption and the operation cost are reduced.

The invention belongs to the technical field of electrochemical engineering, and relates to a three-dimensional electrochemical reactor which comprises a reactor shell assembly, three-dimensional electrode modules, counter electrode modules, diaphragms or polymer partition plates and an external power supply, the counter electrode modules are arranged in pairs, and the three-dimensional electrode modules are clamped between the counter electrode modules arranged in pairs; the diaphragm or the polymer partition plate is clamped between the electrode surface of the counter electrode module and the electrode surface of the three-dimensional electrode module, and the three-dimensional electrode module, the counter electrode module and the diaphragm or the polymer partition plate are arranged in an inner cavity of the reactor shell assembly; according to the invention, the fluid can flow through the interior and surface of the three-dimensional electrode, and a main electrochemical reaction field is transferred to the interior and surface of the three-dimensional electrode, so that the sufficient flow and mixing of the fluid between the electrodes are ensured while the electrode spacing is shortened as far as possible, the solution resistance is reduced, the cell voltage is reduced, and the current efficiency is improved; and energy consumption increase and equipment damage caused by overhigh voltage are avoided.

The invention relates to the technical field of organic electroluminescent devices, and discloses a cyanopyrimidine derivative organic compound and application thereof, a perovskite solar cell and an organic electroluminescent device. The organic compound has a structure as shown in a formula (I). The cyanopyrimidine derivative organic compound provided by the invention can improve the performance of a device, reduce the driving voltage, improve the current efficiency and prolong the service life of the device. # imgabs0 #

The invention belongs to the field of composite electrode preparation, and particularly relates to a high-current-carrying multiphase electrode with a vertical array type carbon nano catalyst layer and a controllable preparation method and application of the high-current-carrying multiphase electrode with the vertical array type carbon nano catalyst layer. The vertical array type carbon nano catalyst layers with different structural sizes (adjustable diameter and height) are synthesized by assisting a chemical vapor deposition method, and the multi-phase electrode with different functional layers is prepared on the carbon-based composite carrier through hot pressing. The high-current-carrying multi-phase electrode provided by the invention can realize the purpose of keeping high-electricity hydrogen peroxide production current efficiency under industrial-grade large current (300 mA / cm < 2 >). The composite electrode is mainly used for in-situ electrocatalytic production of hydrogen peroxide, and under the condition of industrial large current (300 mA / cm < 2 >), the concentration of hydrogen peroxide can reach 1-5 wt%, and the current efficiency can be maintained at 80-99%.

The embodiment of the present invention provides an electrolytic cell temperature distribution adaptive adjustment system and method, the system includes: a thermoelectric power generation unit for performing thermoelectric conversion on the electrolytic cell to generate electrical energy or thermal energy, a regional power management module for collecting the electrical energy generated by the thermoelectric power generation unit and supplying power to the system, a data acquisition module for collecting the state data of the electrolytic cell by using the electrical energy supplied by the regional power management module; a control center for adjusting the temperature of the electrolytic cell according to the state data and the temperature threshold; a monitoring platform for real-time analysis of the state data of the electrolytic cell and displaying the analysis results. The system of the present invention can be quickly deployed without occupying additional external energy, so that the electrolytic cell can adaptively realize regional temperature control, quickly reach or remain in a thermal equilibrium state, and improve current efficiency; at the same time, the overall parameters of the electrolytic cell are monitored and recorded, which brings great economic benefits to subsequent energy-saving analysis.

The invention relates to a method for preparing metallic titanium through two-step electrolysis in halide molten salt, and belongs to the technical field of metallurgy. The method comprises the following steps: by taking fluorine-chloride mixed molten salt as primary electrolytic molten salt, adding TiO2 into the fluorine-chloride mixed molten salt, uniformly mixing, heating the fluorine-chloride mixed molten salt containing TiO2 to the electrolytic temperature of 650-850 DEG C in an inert atmosphere, inserting a cathode and an anode, carrying out primary molten salt electrolysis, taking out a cathode product, and carrying out secondary electrolytic treatment on the cathode product to obtain the TiO2 / TiO2 composite material. Performing vacuum distillation or washing on the cathode product to remove impurities, and drying to remove attached electrolyte to obtain a primary electrolytic product crude titanium; the method comprises the following steps: by taking primary electrolysis product crude titanium as a soluble anode, high-purity metal titanium as a cathode and chloride molten salt as secondary electrolysis molten salt, heating the chloride molten salt to the electrolysis temperature of 550-750 DEG C in an inert atmosphere, inserting the cathode and the anode, performing electrolytic refining, and washing the electrolysis product with diluted hydrochloric acid and deionized water to remove impurities, thereby obtaining the low-oxygen metal titanium powder. A low-melting-point molten salt system is adopted in two-step electrolysis, and energy consumption can be effectively reduced.

The invention relates to an aluminum circulation method for metal aluminum energy storage and hydrogen production, and belongs to the technical field of aluminum material production. The method comprises the steps that aluminum oxide is fed into an electrolytic aluminum factory for electrolysis, and metal aluminum liquid is obtained; the metal aluminum liquid is processed, and the aluminum-based hydrogen production material with the large specific surface area is obtained; the method comprises the following steps: carrying out chemical reaction on an aluminum-based hydrogen production material and water under the action of a nitrogen-containing strong alkaline organic matter catalyst to obtain hydrogen and alumina hydrate slurry; performing solid-liquid separation on the alumina hydrate slurry to obtain alumina hydrate and an aqueous solution containing the catalyst; roasting the alumina hydrate to obtain high-activity metallurgical-grade alumina; the high-activity metallurgical-grade aluminum oxide is cyclically used for preparing metal aluminum liquid through electrolysis, and the aqueous solution containing the catalyst is cyclically used for hydrogen production through reaction of the aluminum-based hydrogen production material and water, so that a closed-loop cycle is formed. The defects of high energy consumption, high carbon emission intensity, high cost and the like in the metal aluminum preparation and aluminum recycling process are overcome.

The present invention discloses an electrolytic separation device for separating arsenic and gallium from gallium arsenide waste residue, comprising an electrolytic cell, wherein an anode plate, a cathode plate, a first diaphragm and a second diaphragm are arranged in the electrolytic cell, wherein the first diaphragm and the second diaphragm are arranged between the anode plate and the cathode plate; the anode plate, the cathode plate, the first diaphragm and the second diaphragm separate the electrolytic cell into an anode region, an arsenic removal region and a cathode region which are independent of each other, wherein the anode region is located between the anode plate and the first diaphragm, the arsenic removal region is located between the first diaphragm and the second diaphragm, and the cathode region is located between the second diaphragm and the cathode plate. The present invention also provides an electrolytic separation method for separating arsenic and gallium from gallium arsenide waste residue using the electrolytic separation device. The present invention adopts a combination of slurry electrolysis and cyclone electrowinning to achieve efficient leaching of gallium arsenide waste, avoids contamination of the cathode electrolyte, and the purity of the cathode product gallium is high, thereby achieving efficient separation of gallium and arsenic.

The invention provides a 6, 6-dimethyl-6H-benzo [cd] pyrene compound, an intermediate thereof, an organic electroluminescent device and a display device, and relates to the technical field of organic photoelectricity. The structural general formula of the 6, 6-dimethyl-6H-benzo [cd] pyrene compound is # imgabs0 #, and m and n are respectively and independently selected from 0 or 1; hydrogen atoms in the formula I are respectively and independently substituted or not substituted by deuterium atoms, F, CN, C1-C12 alkyl, C6-C30 aryl or C3-C30 aromatic heterocyclic groups. According to the present invention, the structure of the 6, 6-dimethyl-6H-benzo [cd] pyrene compound is designed, such that the obtained 6, 6-dimethyl-6H-benzo [cd] pyrene compound has excellent performance, and the organic light-emitting device prepared by using the 6, 6-dimethyl-6H-benzo [cd] pyrene compound as the light-emitting layer material has characteristics of low driving voltage, high current efficiency and long service life.

The invention relates to the technical field of anode preparation, and discloses a titanium-based anode processing method and electrode processing equipment. Titanium metal is used for preparing a plate-shaped substrate, a titanium-based anode substrate part with a pore structure is formed, a coating structure scheme is designed according to the substrate part, and the sequence and composition of superposed coatings are determined; according to a coating structure scheme, a guiding structure and a filling part of each layer of coating are sequentially prepared on the substrate, preparation of the titanium-based coating is completed layer by layer, the complete titanium-based anode is obtained, the corrosion resistance of the anode is enhanced through the multi-layer coating structure, the titanium-based anode is suitable for various corrosive environments, and the service life of the titanium-based anode is prolonged. According to the titanium-based anode, the material and the structure of the coating are optimized, the current efficiency and the conductivity are improved, the mechanical strength and the stability of the anode are improved through the multi-layer structure and the pore design, uniform filling is ensured through the guiding structure, and the problem that in the prior art, the coating is prone to being uneven when the titanium-based anode with the pore structure and the multi-layer coating is prepared is solved.

The present invention provides a composition containing carbazole compounds and an organic electroluminescent device, belonging to the technical field of organic electroluminescent materials. In the present invention, the composition containing carbazole compounds is designed to be suitable for being used as a main material of a phosphorescent light-emitting layer of an organic electroluminescent device, so that the organic electroluminescent device has higher current efficiency and longer life.

The invention discloses a foam aluminum alloy sacrificial anode-solid corrosion inhibitor interpenetrating composite material and a preparation method, and relates to the technical field of anticorrosive materials.The preparation method comprises the steps that a refiner, a refining agent and a deslagging agent are sequentially added into a metal aluminum alloy solution, foam aluminum alloy is immersed into solid corrosion inhibitor suspension liquid, and vacuumizing is conducted in a vacuum drying environment; the method comprises the following steps: carrying out heat treatment on a vacuumized solid corrosion inhibitor suspension, carrying out heat preservation to remove a solvent in the corrosion inhibitor suspension, increasing the capacitance of the sacrificial anode by utilizing the large specific surface area of foam metal, improving the current efficiency, interpenetrating the solid corrosion inhibitor in the perforated aluminum alloy, and continuously releasing the corrosion inhibitor, thereby achieving the purpose of improving the corrosion resistance of the perforated aluminum alloy. The problem that the surface of the anode is stained and attached can be solved, meanwhile, the double corrosion prevention effects of the sacrificial anode and the corrosion inhibitor can be achieved, and the purpose of efficiently inhibiting corrosion failure of a metal component is achieved.

The present invention relates to an energy-saving high-strength fence-type composite anode plate for nonferrous metal electrowinning and a preparation method thereof, and belongs to the technical field of nonferrous metallurgy. The composite anode plate of the present invention comprises an aluminum conductive beam, a copper-aluminum composite conductive head is fixedly arranged at the end of the aluminum conductive beam, a fence-type aluminum-based composite anode plate bracket is fixedly arranged at the bottom end of the aluminum conductive beam, and a plurality of horizontal conductive reinforcing ribs are fixedly arranged along the longitudinal direction on the fence-type aluminum-based composite anode plate bracket, and both sides of the fence-type aluminum-based composite anode plate bracket are covered with insulating sheaths, and the two ends of the conductive reinforcing ribs are arranged in the insulating sheaths; the fence-type aluminum-based composite anode plate bracket is composed of a plurality of parallel anode composite rods, and the anode composite rods include aluminum alloy rods, transition layers, lead-bismuth-antimony / rare earth-nano cobalt composite layers, and aluminum-titanium-boron particle surface-coated lead-silver composite coatings from the inside to the outside; wherein the transition layers include zinc layers, copper layers, and lead-tin-rare earth composite layers from the inside to the outside.

The invention belongs to the technical field of organic electroluminescence, and particularly relates to a phenanthroline derivative, an organic electroluminescence element containing the phenanthroline derivative and electronic equipment. The phenanthroline derivative has a structure as shown in a general formula 1, # imgabs0 #, R1, R2, R3, R4, R5, R6, R7 and R8 are the same or different, and R1, R2, R3, R4, R5, R6, R7 and R8 are the same or different. The R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from hydrogen, deuterium, halogen, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl, and at least one of R1, R2, R3, R4, R5, R6, R7 and R8 is selected from the structure shown in the general formula 2; # imgabs1 #

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 invention provides a deuterated composition and an organic electroluminescent device. The deuterated composition comprises a first component and a second component, the first component comprises a deuterated mixture obtained by deuteration reaction of a compound A; and the second component comprises a compound shown as a formula III. The specific composition of the deuterated composition is designed, the deuterated composition is used as the main body material of the light-emitting layer, and the prepared OLED device has the advantages of low driving voltage, high current efficiency and long service life.

The application discloses a high-stability modified manganese dioxide catalyst anode and a preparation method thereof. The anode comprises, from bottom to top, a conductive base, a corrosion-resistant conductive layer, a modified manganese dioxide catalyst layer and a silica gel coating layer; the modified manganese dioxide catalyst layer comprises fluorine and metal co-doped nanometer manganese dioxide and carbon materials, the metal is at least one of niobium, bismuth, tin, cerium, lanthanum, cobalt, silver, nickel, platinum, tantalum, ruthenium, iridium and antimony, and the carbon materials comprise graphene and / or carbon nanotubes; the anode has the characteristics of good stability, high current efficiency and long service life, and the preparation method is simple in operation, mild in reaction condition and low in cost, and is favorable for large-scale production.

The invention provides a boron-nitrogen polyheterocyclic compound and application thereof. The boron-nitrogen polyheterocyclic compound provided by the invention has a structure as shown in a formula I. The compound can be used as an organic electroluminescent blue light-emitting material, and has higher current efficiency and longer service life while having lower driving voltage. # imgabs0 #

The invention relates to the technical field of integrated circuits, in particular to a laser radar receiving front-end circuit, an optical circuit and a chip, the circuit comprises a total input end, a total output end, an input module, an intermediate module and an output module, the input module comprises a first input end, a first output end, a first power connection end and a first grounding end; the intermediate module comprises a second input end, a second output end, a second power connection end and a second grounding end; the output module comprises a third input end, a third output end, a third power connection end and a third grounding end; the first input end is electrically connected with the total input end, the first output end is electrically connected with the second input end, the first power connection end is electrically connected with the second grounding end, and the first grounding end is grounded; the second output end is electrically connected with the third input end, and the second grounding end is electrically connected with the third grounding end; the third output end is electrically connected with the total output end, and the third power connection end is connected with a power supply. The circuit is low in power consumption and high in current efficiency.

The application discloses an electrochemical granulation electrode deintercalation lithium extraction membrane stack electrolysis equipment, which comprises an electrolysis tank and an electrode assembly; the electrolysis tank comprises a first side plate, a piece of side plate rubber pad, a plurality of tank bodies, another piece of side plate rubber pad, a second side plate and a first tank body rubber pad, an anion membrane and a second tank body rubber pad arranged in sequence between two adjacent tank bodies; the tank bodies are divided into anode tanks and cathode tanks, the anode tanks and the cathode tanks are arranged alternately in an X direction from the first side plate to the second side plate, and the number of the anode tanks is equal to that of the cathode tanks; and an elastic porous pad is laid on the inner cavity bottom wall of the tank body. The electrolysis equipment can realize efficient extraction of lithium resources in salt lake brine, has the advantages of high lithium recovery rate and current efficiency, and is convenient to install, maintain and observe and monitor in the lithium extraction process.

The invention relates to the technical field of printed circuit board fine circuit preparation, in particular to a method for preparing a PCB fine circuit through efficient pulse electrolytic chemical synergy etching, according to the method for preparing the PCB fine circuit through etching, high pulse peak current density is generated through one-way pulse current, use of reverse pulse current is avoided, and the circuit quality is improved. And meanwhile, the current control is simplified. Moreover, through the synergistic effect of the high pulse peak current density and the limited duty ratio, under the high pulse peak current density, the electrolytic etching speed can be increased, the electrolytic etching time can be greatly shortened, the corrosion effect of chemical etching on the circuit is relatively weakened, and the side corrosion of the circuit is small. Due to the fact that the electrolytic etching speed is high, the electrolytic etching time is short, electrolytic etching is used as a leading part, and chemical etching is used as a supplement part, a corrosion inhibitor does not need to be used in the electrolytic etching solution, and the method has the advantages of being simple in process, low in preparation cost, high in etching speed, good in etching uniformity, high in production efficiency and good in circuit quality and reliability.

The invention discloses an iridium oxide-doped diamond double-film electrode and a preparation method and application thereof. The doped diamond-iridium oxide coupling electrode comprises a substrate and an electrode working layer arranged on the surface of the substrate, the electrode working layer consists of an iridium oxide film layer and a doped diamond film layer, the iridium oxide film layer consists of an iridium oxide matrix and doped diamond particles uniformly dispersed in the iridium oxide matrix. The double-film electrode provided by the invention combines the advantages of an oxide coating electrode and a doped diamond electrode, has a heterojunction effect, and has good electrical conductivity, corrosion resistance and mechanical strength, and can be used for electrocatalytic wastewater degradation, chemical battery positive electrode lightweight plate grid, electrochemical synthesis, electrical signal detection and other related electrochemical fields.

The present invention belongs to the field of steel anti-corrosion surface engineering, and specifically relates to a relatively thin continuous hot-dip aluminum-silicon sacrificial anode alloy coating with an iron content of 3-5wt.% and a preparation method thereof. The process steps of the present invention are as follows: pre-treating the surface of the steel; preparing an Al-10Si-Zn alloy solution with an iron content of 3-5wt.%; performing continuous hot-dip plating; performing variable temperature annealing and quenching heat treatment on the steel after continuous hot-dip plating, so that the "long tongue or peak-shaped" η-Fe2Al5, "needle-shaped or fragmented" θ-FeAl3, "needle-shaped" β-Al9Fe2Si2 phase, θ-Al 13 Intermetallic compounds such as Fe4 and Al3FeSi are transformed into the Chinese character-shaped α-Al8Fe2Si phase and a small amount of needle-shaped β-Al9Fe2Si2 phase through peritectic reaction; at the same time, the coating has good bonding with the substrate, the coating is denser, and the ductility is improved, ultimately solving the above-mentioned production problems.

The invention provides a carbazole compound and an organic electroluminescent device, and the carbazole compound has a structure as shown in a formula I. The carbazole compound with excellent performance is prepared by designing the carbazole compound; the organic electroluminescent device prepared by using the carbazole compound as the material of the luminescent layer has high current efficiency and long service life.

The invention discloses a preparation method and application of a spirofluorene xanthene-based grignarene fluorescent material. [spirofluorene xanthene-fluorobenzene]-based grignarene (G-DSFX) is synthesized by adopting a C-H bond activation gridding method. The optimal reaction conditions are as follows: the catalyst is palladium acetate Pd (OAc), the ligand is tri-tert-butylphosphine tetrafluoroborate PtBu2Me-HBF4, the alkali is potassium carbonate K2CO3, the solvent is N, N-dimethylacetamide DMAc, the temperature is 120 DEG C, the reaction is performed for 48 hours, the reaction concentration is 20 mmol. L <-1 >, and the yield is as high as 19%. The OLED is prepared by adopting a solution processing method, I-shape, U-shape, m-shape and G-DSFX are used as OLED light-emitting layers for device testing by utilizing the solution processing method, and turn-on voltages are 3.9 V, 6.9 V, 4.5 V and 6.4 V respectively; the maximum brightness is 67.9 cd.m <-2 >, 56.69 cd.m <-2 >, 45.43 cd.m <-2 > and 72.2 cd.m <-2 > respectively; the maximum external quantum efficiency EQEmax is 0.08%, 0.06%, 0.03% and 0.15%, which proves that the lattice strategy can also improve the brightness and the external quantum efficiency of the device, and provides a reference for preparing an OLED by a solution processing method.