3692 results about "Active layer" patented technology

A sensor and method for page-based optical data storage. The sensor includes a partially-reflective mirror, a reflective mirror disposed substantially collinear with and spaced apart from the partially-reflective mirror, and an active layer disposed substantially collinear with and between the partially-reflective mirror and the reflective mirror. The partially-reflective mirror has a first and second side and transmits a portion of light incident on the first side. The reflective mirror reflects light incident on the reflective mirror toward the partially-reflective mirror. The active layer absorbs at least a portion of the light oscillating at the resonant frequency.

The invention provides a negative electrode plate and a lithium ion battery, the negative electrode plate comprises a negative electrode current collector, a first negative electrode active layer and a second negative electrode active layer, the negative electrode current collector comprises a first region and a second region, the first region is arranged on the negative electrode current collector, the second region is located between the edge of the negative electrode current collector and the edge of the first region, the first negative electrode active layer is arranged in the first region, and the second negative electrode active layer is arranged in the second region; the Young's modulus of the second negative electrode active layer is greater than the Young's modulus of the first negative electrode active layer. According to the negative electrode plate provided by the invention, the second negative electrode active layer is arranged in the second region of the negative electrode current collector, the Young modulus of the second negative electrode active layer is greater than that of the first negative electrode active layer, and the relatively large Young modulus can inhibit volume expansion generated by the edge of the negative electrode plate in the charging and discharging process, so that the extension stress in the width direction of the negative electrode plate is reduced; the condition of corner damage caused by excessive extension of the negative plate is improved, so that the safety performance of the lithium ion battery is improved.

The invention relates to a Micro-LED full-color display device and a manufacturing method thereof. The display device comprises a driving substrate and first, second and third light-emitting component layers which are bonded in sequence to form a vertical stacked structure. The light-emitting component layers are electrically interconnected among layers through the through electrode group, the first active layer of the first light-emitting component layer is kept continuous, and the active region is prevented from being damaged by controlling the etching depth. The first, second and third light-emitting regions are respectively configured as red, green and blue light-emitting regions, the projection positions on the horizontal plane are staggered, and the area ratio is 2: 1: 1, so that the red light efficiency loss is compensated. The manufacturing method comprises the steps of forming the light-emitting component layers on the temporary substrate and sequentially bonding the light-emitting component layers, wherein when the first light-emitting structure is formed, etching is controlled to be stopped before reaching the first active layer. The method further comprises the processes of filling and planarization of an insulating layer, removal of a temporary substrate, formation of an optical isolation layer and electrode segmentation, and the performance and the manufacturing yield of the device are improved through structural innovation and process optimization.

The invention provides a secondary battery and a power utilization device, the secondary battery comprises a positive pole piece and a negative pole piece, a negative active layer of the negative pole piece comprises a silicon-based material, and a positive active layer of the positive pole piece comprises a lithium transition metal oxide and lithium-containing phosphate of an olivine structure, the lithium-containing phosphate comprises secondary particles I formed by primary particles I, pores exist among the primary particles I in the secondary particles I, and the secondary particles I are of a porous structure; and in the cross section of the secondary particles I, the area of the area filled with the primary particles I accounts for 60%-85%. The secondary battery prepared by the invention has both low-temperature performance and energy density.

The invention discloses a perovskite solar cell and a preparation method thereof, and belongs to the technical field of perovskite solar cells. SAM molecules are introduced between the hole transport layer and the perovskite active layer, the photoelectric conversion efficiency of the perovskite solar cell is improved, an interface modification layer comprising a sheet-shaped P-type semiconductor material is further introduced at the interface of the hole transport layer and the SAM layer, the interface of the hole transport layer / the SAM layer / the perovskite active layer is improved, and the photoelectric conversion efficiency of the perovskite solar cell is improved. The hole transport layer and the perovskite active layer are separated from each other, the energy level difference between the functional layers is reduced, the carrier extraction and transmission of an interface are enhanced, the sheet structure of the sheet P-type semiconductor material can cooperate with the compact SAM layer to block the direct contact between the hole transport layer and the perovskite active layer, and the hole transport efficiency is improved. And the reduction reaction of halide ions in an interinterface hole transport material and a perovskite material is effectively prevented.

The invention discloses a deep ultraviolet LED epitaxial structure, a deep ultraviolet LED device comprising the same and a preparation method, and the epitaxial structure sequentially comprises a sapphire substrate, an AlN nanowire array layer, an AlN intrinsic layer and an AlGaN light-emitting structure layer from bottom to top. The AlGaN light-emitting structure layer further comprises an n-type AlGaN electron injection layer, a quantum well active layer, a p-type AlGaN electron blocking layer and other device structures. According to the invention, the vertically arranged AlN nanowire array is introduced to replace a traditional AlN buffer layer, so that lattice mismatching stress caused by a substrate is significantly released, and the dislocation density of an epitaxial layer is effectively reduced; meanwhile, the introduction of the AlN intrinsic layer further flattens the epitaxial interface and optimizes the lattice quality, thereby providing a high-quality template for the growth of a high-performance AlGaN material. The epitaxial structure is suitable for an LED device in a deep ultraviolet band, and the crystal quality, the electrical property and the luminous efficiency of the device can be improved.

The invention discloses a P-type tellurium oxide thin film field effect transistor and a preparation method thereof. The transistor is provided with a bottom gate top contact structure. The preparation method comprises the following steps: firstly, cleaning the silicon / silicon dioxide substrate, then depositing a tellurium oxide film as the semiconductor active layer by using a metal mask and an electron beam evaporation method, and finally preparing a layer of nickel with the thickness of about 50nm on the active layer by using the mask to serve as the source electrode and the drain electrode. Compared with a traditional tellurium oxide transistor, the tellurium oxide transistor prepared by the method has the advantages that the carrier mobility and the switching ratio are obviously improved, and the hysteresis effect can be ignored. The electrical performance of the tellurium oxide transistor with the bottom gate top contact structure is improved, and the tellurium oxide transistor has the advantages of being low in cost and simple in process step.

The utility model provides a battery negative pole piece and battery, battery negative pole piece includes current collector and active layer, active layer is coated on current collector at least one side surface, on the active layer is equipped with a plurality of groove structure along the length direction of current collector, groove structure extends along the width direction of current collector, and the groove structure is equipped with the groove structure. The active layer is divided into a plurality of areas by the plurality of groove structures along the length direction of the current collector, and each area is provided with a plurality of hole structures. According to the battery negative plate, the hole structures and the groove structures which are sequentially and alternately arranged in the length direction of the current collector are adopted, the liquid injection time of the battery is shortened, meanwhile, the liquid retention amount of electrolyte is increased, the wettability of the electrode is improved, the cycle life is prolonged, the service life of the battery is prolonged, and the performance stability of the battery is improved; and the problem that the battery performance is influenced due to poor wettability of the battery negative plate in the prior art is solved.

The present application provides a battery cell, a battery device, and an electric device. The battery cell comprises a casing and an electrode assembly inside the casing, wherein the electrode assembly comprises a positive electrode sheet, a negative electrode sheet, and a separator between the two electrode sheets. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active layer provided on at least one side of the positive electrode current collector; the positive electrode active layer comprises a positive electrode active material; and the positive electrode active material comprises a nickel-containing lithium transition metal oxide and a lithium-containing phosphate, wherein the molar amount of Ni in the nickel-containing lithium transition metal oxide accounts for 70% to 95% of the total molar amount of the transition metal. The positive electrode active material comprises Ni, Co, Mn, Fe and Li, and the ratio of the mass of Ni in the positive electrode active material to the total mass of Fe and Mn is between 0.15-2.

The invention provides a battery monomer, a battery device and a power utilization device. The battery monomer comprises an electrode assembly, the electrode assembly comprises a positive pole piece, a negative pole piece and a non-aqueous electrolyte, the positive pole piece comprises a positive current collector and a positive active layer arranged on the positive current collector, and the positive active layer comprises a positive lithium supplementing material; the non-aqueous electrolyte comprises an electrolyte additive as shown in a formula (I). The energy density, the cycle performance and the high-temperature storage performance of the battery are improved at the same time.

A method for manufacturing an electrode for a secondary cell, comprising the steps of: providing an electrode substrate comprising an electrically conducting material; forming an active layer on the electrode substrate, wherein the active layer comprises a plurality of carbonaccous particles; exposing the active layer to a magnetic field configured to orient a majority of the particles along a normal of the substrate; and exposing the active layer to laser pulses or mechanical rollers to form a plurality of passages in the active layer, thereby facilitating ionic transport towards the substrate.

The invention discloses an indolocarbazole compound, a perovskite solar cell and a preparation method, and belongs to the technical field of perovskite solar cells, the indolocarbazole compound provided by the invention is an organic small molecule material and has an asymmetric molecular structure, and an asymmetric conjugated structure system of the indolocarbazole compound enhances the molecular dipole moment and improves the photoelectric conversion efficiency. And the energy level matching is optimized. Meanwhile, benzene ring groups on side chains of molecules of the organic hole transport layer can further inhibit excessive aggregation of the molecules, uniform coverage is achieved, and efficient transport of carriers is achieved. Therefore, when the indolocarbazole compound organic small molecule material is used as a hole transport layer material for a perovskite solar cell, the energy levels of the highest occupied molecular orbital HOMO and the lowest unoccupied molecular orbital LUMO of the indolocarbazole compound organic small molecule material provided by the invention can be well matched with the energy level of an active layer material; therefore, the collection efficiency of current carriers is greatly improved, and the filling factor and the photoelectric conversion efficiency are improved.

The invention provides structures and synthesis of a class of piezoelectric monomers and COFs with fluorine-substituted side chains tethered on the peripheral position of an aromatic moiety (thus different functional side chains). The multi-fluoro groups on the mentioned piezoelectric COFs provide abundant piezoelectric active sites, which enable the application as the active layer for PENGs. The exemplary embodiments also provide a process for the fabrication of a piezoelectric COF and a process for the fabrication of the piezoelectric nanogenerator utilizing mentioned piezoelectric COF.

The invention relates to the technical field of secondary batteries, and discloses a secondary battery, a negative active layer in a negative plate comprises a negative active material and a negative adhesive, the negative active material comprises a silicon-based material, the negative adhesive comprises a polymer, and the raw material of the polymer comprises a hard segment monomer and a soft segment monomer; the electrolyte comprises carbonic ester substances and lithium salt; on the basis of the total mass of the raw materials of the polymer, the mass content of the soft segment monomer is r%; on the basis of the total mass of the electrolyte, the mass content of the carbonic ester substance is t%; t / r is greater than or equal to 0.234 and less than or equal to 1.770. According to the secondary battery provided by the invention, the chemical structure of the adhesive is optimized and the composition of the electrolyte solution is adjusted, so that the excellent electrochemical performance of the battery is ensured, the swelling effect of the electrolyte on the adhesive is reduced, the cycle life of the battery is prolonged, and the safety of the battery is improved.

The invention provides a light emitting diode chip and a preparation method thereof, and belongs to the technical field of semiconductors. The light emitting diode chip comprises an epitaxial layer, a distributed Bragg reflection layer, a first primary electrode and a second primary electrode; the epitaxial layer comprises a first semiconductor layer, an active layer and a second semiconductor layer which are stacked in sequence; the distributed Bragg reflection layer is stacked on one side of the epitaxial layer, and the distributed Bragg reflection layer is provided with a first electrode hole and a second electrode hole; the first primary electrode penetrates through the first electrode hole and is electrically connected with the first semiconductor layer, and the second primary electrode penetrates through the second electrode hole and is electrically connected with the second semiconductor layer. The preparation cost can be effectively reduced.

The invention provides a nitrogen and fluorine co-doped three-dimensional carbon material as well as a preparation method and application thereof. The preparation method comprises the following steps: in a protective atmosphere, heating a uniform mixture containing an organic carbon source, a fluorine source and a nitrogen source at 400-1000 DEG C to obtain the nitrogen-fluorine co-doped three-dimensional carbon material. When the nitrogen and fluorine co-doped three-dimensional carbon material is used for preparing a sodium ion battery without a negative electrode active layer, the sodium ion deposition process can be well homogenized, sodium dendrite growth and negative electrode volume expansion are inhibited, and the sodium ion battery has relatively low polarization and longer cycle life.

The invention discloses a display panel and a display device, the display panel comprises an array substrate and an opposite substrate, the array substrate comprises a substrate, a thin film transistor, a passivation layer and a first transparent conductive layer; n thin film transistors are arranged in the direction from the non-display area to the display area, and N is larger than 1; the thin film transistor comprises a grid electrode, a grid insulating layer, an active layer and an electrode layer, the electrode layer comprises a first electrode and a second electrode which are spaced, and the second electrode is close to the display area; the second metal layer comprises an electrode layer, the first metal layer comprises a common electrode wire which is arranged corresponding to the active layer and forms a grid electrode, and the common electrode wire and the second electrode are connected with different electric signals; the first transparent conductive layer comprises a first conductive part, and the first conductive part is electrically connected with the first electrode via hole; the common electrode wires corresponding to the N thin film transistors are connected to the same electric signal, and the second electrodes of the N thin film transistors are sequentially connected with different electric signals. Through the arrangement, the problem that the wiring is easy to corrode is solved.

The invention provides an organic electrochemical transistor regulated and controlled by a grating electrode and a preparation method of the organic electrochemical transistor, and belongs to the technical field of photoelectric detection and organic electrochemical transistors. The organic electrochemical transistor comprises a transparent substrate, a detector anode, a hole transport layer, a photosensitive layer, a semiconductor active layer, an electron transport layer, a detector cathode, a packaging layer, a transistor grid electrode, a transistor source electrode, a transistor drain electrode and an electrolyte. A QPD and an OECT are integrated above the transparent substrate. The invention also provides a preparation method of the organic electrochemical transistor. Through the illumination effect, the photo-generated voltage generated by the QPD serves as a grid regulation and control signal, and higher current variation for different illumination intensities is achieved. The preparation process is remarkably simplified, the responsivity, the detectivity and the linear dynamic range of the device are improved, the stability and the low power consumption characteristic are improved, and a new solution is provided for application of a photoelectric-electrochemical fusion device in the fields of flexible electronics, wearable detection, biosensing and the like.

The invention relates to the technical field of lasers, in particular to a vertical-cavity surface-emitting laser and a preparation method thereof, and the vertical-cavity surface-emitting laser comprises a substrate layer, an N-type DBR structure, a first spacing layer, an active layer, a second spacing layer and a P-type DBR structure which are stacked in sequence; wherein the P-type DBR structure is formed by alternately arranging a high-refractive-index P-type semiconductor layer and a low-refractive-index P-type semiconductor layer for a plurality of cycles, and the low-refractive-index P-type semiconductor layer is a P-type semiconductor layer containing an Al component; a low-refractive-index P-type semiconductor layer adjacent to the second spacing layer in the P-type DBR structure is used as a first oxidation limiting layer, and the molar fraction of Al component in the first oxidation limiting layer before oxidation is greater than 0.98. According to the invention, the single transverse mode output characteristic of the vertical cavity surface emitting laser under high power can be improved at least.

Higher modulation speed is achieved for a laser device comprising: an active layer structure between a semiconductor substrate and a grating structure configured for manipulation, comprising a common active layer for generation of laser light; a first facet spatially adjacent to one end of and a second facet spatially adjacent to an opposing end of the active layer structure, the first facet emitting laser light, the second facet being opposite the first, both comprising anti-reflection coating; the grating structure comprising spatially adjacent integral grating sections; a cladding structure for optically confining the laser light and adapted for arranging the grating structure between the active layer and the cladding structure; a DFB structure having a first grating section, at least one DBR structure having a second grating section, the first and second grating sections sharing the common active layer for at least the integral grating sections; the DFB structure comprising a first optical function as lasing function and the at least one DBR structure comprising a second one as optical feedback.

The invention relates to the technical field of semiconductor devices, and discloses a Micro-LED display chip and a preparation method thereof. The Micro-LED display chip comprises a substrate, a plurality of LED light-emitting units, a planarization layer and a conductive reflecting wall. The LED light-emitting unit comprises a first doping type semiconductor layer, an active layer and a second doping type semiconductor layer, and at least the first doping type semiconductor layer and the active layer are processed to form an LED mesa. And a channel is formed between the adjacent LED mesas. The planarization layer is located between the LED light-emitting unit and the substrate, and the planarization layer is in bonding connection with the substrate. The planarization layer is filled in the channel and covers the LED mesa. The planarization layer has a groove corresponding to the channel. The conductive reflecting wall is arranged in the groove and surrounds the LED table top. The light-emitting efficiency and the brightness of the LED light-emitting unit on the main light-emitting angle can be improved, and then the light-emitting efficiency and the brightness of the Micro-LED display chip are improved.

The invention discloses a composite cathode and anode plate made of a lead-carbon composite material, the composite cathode and anode plate comprises a current collector, a transition layer and an active layer which are compounded in sequence, the transition layer tightly coats the outer surface of the current collector, the active layer tightly coats the outer surface of the transition layer, and the composite cathode and anode plate is prepared by the following method: S1, preparing the composite cathode and anode plate; raw material pretreatment: placing the carbon material in a vacuum oven; according to the invention, the structural design of the composite negative plate and the preparation process are integrated, so that accurate matching of the raw material ratio and the process parameters is realized, and many defects of the traditional electrode are effectively solved; the three-layer gradient structure improves the interface bonding force, and delamination is avoided; the optimized raw material system and the preparation process have a synergistic effect, so that the hydrogen evolution overpotential is remarkably improved, the internal resistance is reduced, the cycle life is prolonged, the low-temperature performance is improved, the energy density is improved, and a reliable technical scheme is provided for the application of the lead-acid storage battery in the high-end field.

The application discloses a kind of full solid-state battery and its preparation method and application, it is related to solid-state battery technical field.The edge of positive active layer is attached with solidified insulating glue, so as to use the solidified insulating glue to fill the size difference between the positive active layer and the negative active layer, and the end of the positive active layer and the negative active layer is flush, the insulating glue plays a supporting role under extrusion, avoids the problems such as collapse and short circuit caused by the size difference between the positive active layer and the negative active layer;The insulating glue at the edge can be bonded with the negative electrode under high pressure, and when the positive electrode is charged and discharged, the cycle performance difference caused by the volume change of the positive electrode during charging and discharging can be effectively alleviated, and the cycle of the battery is improved;It can also effectively avoid the occurrence of problems such as the edge of the positive electrode dropping material.By setting electrolyte film between the positive active layer and the negative active layer, the impedance between the electrolyte film and the electrode sheet is reduced by using the ionic liquid treatment layer on the electrolyte film, and the battery performance is improved.

A display device comprises an active layer on a substrate, a first metal layer above the active layer, a second metal layer above the first metal layer, a first transistor comprising a semiconductor region in the active layer, a drain electrode on a first side of the semiconductor region, a source electrode on a second side opposite the first side of the semiconductor region, and a gate electrode in the second metal layer, a first capacitor comprising a first capacitor electrode in the first metal layer and electrically connected to the gate electrode of the first transistor, a second capacitor comprising a second capacitor electrode in the first metal layer and electrically connected to a driving voltage line supplying a driving voltage, and a shielding electrode in the second metal layer and overlapping with the first capacitor electrode, the second capacitor electrode, and the drain electrode of the first transistor.

The invention provides a pole piece, a solid-state battery, a battery pack and electric equipment, the pole piece comprises a current collector and an active material layer arranged on at least one side of the current collector, the surface of the active material layer is provided with a concave part, the depth of the concave part is smaller than the thickness of a negative active layer, the concave part is filled with a filler, and the filler comprises a first solid-state electrolyte. The pole piece can effectively improve the first coulombic efficiency and the rate capability of the solid-state battery.

The application provides a sodium ion battery monomer, a secondary battery and an electric device. The sodium ion battery monomer comprises an electrode assembly and a shell, the shell is cylindrical, the shell has a containing cavity inside, and the electrode assembly is located inside the containing cavity; the electrode assembly comprises a negative electrode sheet, the negative electrode sheet comprises a negative electrode current collector and a negative electrode active layer located on at least one surface of the negative electrode current collector, the density of the negative electrode current collector is ≤5.0 g / cm 3 , and the group margin of the sodium ion battery monomer satisfies 0.95≤group margin<1, wherein the group margin is the ratio of the diameter of the electrode assembly to the diameter of the containing cavity. By adopting the negative electrode current collector with small density, cooperating with the large group margin, and adopting the cylindrical structure, the battery monomer can have high mass energy density, high volume energy density and good cycle performance, which is beneficial to promote the development of small size and light weight of the battery monomer.

The invention provides a battery, the battery comprises a negative plate, a positive plate and an electrolyte, the negative plate comprises a negative current collector and a negative active layer located on the surface of one side or two sides of the negative current collector, the negative active layer comprises a silicon-based material, and in the negative active layer, the weight ratio of silicon element is 2-45%; the electrolyte comprises difluoroethylene carbonate, fluoroethylene carbonate and a phosphazene compound, and in the electrolyte, the weight ratio of the difluoroethylene carbonate to the fluoroethylene carbonate is 0.002-0.4; the molecular structure of the phosphazene compound comprises cyano groups and phosphorus atoms, and the weight ratio of the phosphazene compound in the electrolyte is 0.1-5%. According to the battery, a firm and flexible SEI film can be formed on the surface of the silicon-based negative electrode, repeated breakage of the SEI film is reduced or even avoided, meanwhile, the concentration of HF can be reduced, the internal short circuit and self-discharge risks of the battery are reduced, and the long-cycle stability and the high-temperature cycle performance are improved.

A light-receiving device in which an increase in driving voltage is inhibited is provided. Any of the following light-receiving devices is provided: a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes an organic compound having an electron-withdrawing group; a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes a heteroaromatic compound having an electron-withdrawing group.

The present invention discloses a field-effect transistor device having a blocking region, for use in solving the problem of short-channel effects of field-effect transistors in the prior art. The field-effect transistor device includes an active layer, and the active layer includes a source region, a drain region, and a channel region located between the source region and the drain region. When the device is switched on, an effective channel and an equivalent source region and an equivalent drain region that are distant from the effective channel at least in the thickness direction of the channel region are formed in the channel region, and the field-effect transistor device supplies an working current by connecting the source region and the drain region by means of the effective channel, the equivalent source region, and the equivalent drain region; the field-effect transistor further includes a carrier blocking region, and in a plane perpendicular to the length direction of the effective channel, the vertical projections of the equivalent source region and the equivalent drain region are located in the vertical projection of the carrier blocking region.

The invention provides a secondary battery and an electrochemical device, and relates to the technical field of batteries. The negative pole piece in the secondary battery comprises a negative current collector; the first active layer is arranged on the surface of at least one side of the negative electrode current collector, and the first active layer comprises a first silicon-carbon negative electrode material with the sphericity degree of A1; the second active layer is arranged on the surface of the first active layer, and the second active layer comprises a second silicon-carbon negative electrode material with the sphericity degree of A2; a2gt is satisfied; a1; the diaphragm comprises a polymer base membrane and a porous ceramic layer arranged on the surface of one side of the polymer base membrane, and the porous ceramic layer is opposite to the second active layer. The energy density of the secondary battery disclosed by the invention is above 750Wh / kg; the K value is less than 0.05 mV / h; the capacity retention ratio after 500 cycles at the normal temperature of 25 DEG C is 90% or above; and the capacity retention ratio after 500 cycles at the high temperature of 45 DEG C is more than 80%.