99 results about "Electron transporting layer" patented technology

This invention discloses a method for preparing a (111) preferred-oriented perovskite thin film based on substrate control, comprising: providing a substrate; forming a SnO2 electron transport layer on the substrate; forming a zinc oxalate (ZnOX) interlayer on the electron transport layer; and preparing the perovskite active layer on the ZnOX interlayer using a two-step sequential deposition method, wherein the perovskite active layer has a (111) preferred orientation; in this invention, the interaction between oxalate anions and PbI2 induces the formation of a porous PbI2 film, which, combined with Zn... 2+ The defect compensation and lattice regulation effects of the embedded perovskite lattice successfully induced the growth of a (111) preferred orientation perovskite thin film with large grains (up to 3 μm in size) and low defect density, and the (111) / (100) peak intensity ratio was improved by nearly 5 times. This invention achieves the simultaneous optimization of perovskite thin film structure and device performance with a simple and effective interface modification strategy, providing a new path that is both scientific and practical for the industrialization of high-performance long-life perovskite solar cells.

This application provides a perovskite light-emitting module and its fabrication method, belonging to the field of semiconductor optoelectronic device manufacturing technology. The perovskite light-emitting module includes: a substrate, and multiple perovskite light-emitting units located on the substrate; wherein, along the direction away from the substrate, each perovskite light-emitting unit sequentially includes an anode, a hole transport layer, a perovskite layer, an electron transport layer, and a cathode; the multiple perovskite light-emitting units are arranged in series, and in two adjacent perovskite light-emitting units, the cathode of the preceding perovskite light-emitting unit is electrically connected in series with the anode of the following perovskite light-emitting unit.

The present application relates to the technical field of organic optoelectronic materials and devices, in particular to a preparation method of white organic light-emitting diodes based on a kind of blue, yellow and other color cMa copper (I) TADF complex with nitrogen heterocyclic carbene-copper-arylamines structure, including three steps: first, synthesis of cMa type copper (I) TADF complex containing blue light emitter and yellow light emitter as representative, obtained by ligand selection, intermediate preparation and purification;Second, construct layered WOLEDs device, from bottom to top in turn for substrate, ITO anode, hole injection layer, hole transport layer, buffer layer, yellow light emitting layer, blue light emitting layer, electron transport layer, electron injection layer and Al cathode;Third, through substrate pretreatment, mbar high vacuum evaporation and nitrogen glove box packaging complete device preparation.The WOLEDs device W1, W2 prepared by the present application has excellent photoelectric performance, the CRI is up to 83, the maximum external quantum efficiency is greater than or equal to 13.3%, has good stability and low cost, and is suitable for lighting and display fields.

The present application aims at preventing deterioration inside an organic EL element, greatly improving light extraction efficiency, and providing a compound that absorbs light of wavelengths of 400 nm to 410 nm of sunlight without affecting materials inside the element, and has a high refractive index in the range of wavelengths of 450 nm to 750 nm. The present application is an amine compound that has a high refractive index and a specific benzoxazole ring structure. In an organic EL element having, in at least this order, an anode electrode, a hole transporting layer, a light emitting layer, an electron transporting layer, a cathode electrode, and a cover layer, the cover layer preferably contains the amine compound of the present application that has a specific benzoxazole ring structure.

A method for manufacturing an electroluminescent element includes: forming a first electrode on a substrate; forming a first insulating layer covering the first electrode; forming a second electrode disposed on the first insulating layer and having a region overlapping with the first electrode; forming a first electron transport layer in contact with the second electrode; forming a second insulating layer covering the region overlapping with the second electrode and having an opening in the region overlapping with the first electrode. The method involves coating the opening with a liquid composition containing a metal oxide material and a solvent; removing the solvent after coating to form the second electron transport layer; forming a light-emitting layer overlapping the second electron transport layer and containing an electroluminescent material; and forming a third electrode in the region overlapping with the light-emitting layer.

A solar cell includes a transparent electrode and a hole transport layer (HTL) coupled to and disposed underneath the transparent electrode. The solar cell includes a light-absorbing layer made of a perovskite photovoltaic material that is coupled to the HTL opposite the transparent electrode. The solar cell includes an electron transport layer (ETL) made of tin oxide (SnO2) coupled to the light-absorbing layer opposite the HTL. The solar cell includes a bottom electrode made of a carbon material coupled to the ETL opposite the light-absorbing layer. The solar cell includes a substrate made of aluminum or an aluminum alloy coupled to the bottom electrode opposite the ETL.

The present invention relates to an organic optoelectronic device comprising an anode and a cathode facing each other, a light-emitting layer located between the anode and the cathode, and an electron transport layer located between the light-emitting layer and the cathode, wherein the light-emitting layer comprises a first compound represented by Chemical Formula 1 and a second compound represented by a combination of Chemical Formula 2 and Chemical Formula 3, and the electron transport layer comprises a third compound represented by Chemical Formula 4. Detailed explanations of Chemical Formula 1 to Chemical Formula 4 are as defined in the specification.

Disclosed are a light-emitting device and a preparation method therefor, and a display device. The light-emitting device includes a first electrode, a first light-emitting unit, one or more charge generation layers, a second light-emitting unit, an electron transport layer and a second electrode, which are sequentially stacked. A charge generation layer is arranged between two light-emitting units, and no hole transport layer is arranged, thereby simplifying the structure of a light-emitting device while ensuring the brightness, and reducing the overall thickness of the light-emitting device.

The application relates to a nitrite reductase electrode and a preparation method thereof and an electrochemical system. The nitrite reductase electrode comprises a substrate layer and n electron transfer layers and n enzyme activity layers in the form of alternating layers above the substrate layer, n is in the range of 2-30, wherein the substrate layer comprises a carbon-based electrode loaded with a transition metal phosphide, and the enzyme activity layer comprises a nitrite reductase. The nitrite reductase electrode has low detection limit, high sensitivity, high enzyme loading rate, high electrocatalytic efficiency and good application prospect.

A nanoimprint DMD fabrication method for wide-viewing-angle double-sided OLED displays belongs to the field of organic light-emitting diodes. The method involves fabricating a photoresist grating structure; spin-coating a PDMS mixture onto a photoresist, applying pressure, and annealing to obtain a PDMS template with a grating structure; fabricating a hole injection / transport layer on a pre-prepared ITO glass substrate, followed by the fabrication of an emissive layer; evaporating an electron transport layer (TmPyPB); and after cooling, imprinting with the PDMS template to obtain a TmPyPB layer with a grating structure. The grating structure has a period of 430±5 nm and a height of 40±5 nm. Evaporating an electron injection layer (LiF), a cathode (Al+Ag), and an outermost cladding layer (HATCN) yields the wide-viewing-angle double-sided OLED. This method improves transmittance and overall brightness, exhibits near-zero haze high transmittance, a Lambertian-like radiation distribution, and excellent color stability at viewing angles greater than 110°.

An electroluminescent display device includes a substrate on which a plurality of sub-pixels are defined; a first electrode in each sub-pixel on the substrate; a first hole transporting layer on the first electrode; a second hole transporting layer on the first hole transporting layer; a third hole transporting layer on the second hole transporting layer; a light-emitting material layer on the third hole transporting layer; an electron transporting layer on the light-emitting material layer; and a second electrode on the electron transporting layer, wherein the first hole transporting layer includes a P-type dopant and a first hole transporting material, the second hole transporting layer includes the first hole transporting material, and the third hole transporting layer includes a second hole transporting material, and wherein a total thickness of the first and second hole transporting layers is equal to or greater than a thickness of the third hole transporting layer.

A light-emitting substrate comprises a substrate and a plurality of light-emitting devices located on one side of the substrate; each of the plurality of light-emitting devices comprises an anode, a quantum dot light-emitting layer, an electron transport layer and a cathode stacked on one side of the substrate; wherein the material of the electron transport layer comprises a metal oxide; the electron transport layer further comprises hydrogen atoms; in the electron transport layer, the ratio of the number of hydrogen atoms to the number of metal atoms in the metal oxide ranges from 1:5 to 3:10.

The present invention relates to an organic EL device having at least an anodic electrode, a hole transport layer, a light emitting layer, an electron transport layer, a cathodic electrode, and a capping layer in this order, in which the capping layer contains an amine compound having a benzazole ring structure represented by the following general formula (A-1).

The application discloses a compound and application thereof, and belongs to the technical field of display. The chemical structural formula of the compound is shown in the following: A is O, S, CR1R2; Ar1-Ar3 are each independently selected from one of hydrogen, protium, deuterium, tritium, substituted or unsubstituted C1-C18 alkyl, substituted or unsubstituted C6-C30 aryl, and substituted or unsubstituted C3-C30 heteroaryl; R, R1 and R2 are each independently selected from one of hydrogen, deuterium, substituted or unsubstituted C1-C18 alkyl, substituted or unsubstituted C6-C30 aryl, and substituted or unsubstituted C3-C30 heteroaryl; n represents an integer of 0-7; and the compound is suitable for preparing an electron transport layer or an n-type charge generation layer of an OLED device, so that the efficiency and the service life of the device are improved, and the voltage of the device is reduced.

This invention relates to the field of organic photovoltaic (PV) device technology, specifically to an organic PV device based on disk-shaped liquid crystal molecules, its fabrication method, and its applications. The organic PV device based on disk-shaped liquid crystal molecules provided by this invention comprises an anode substrate, a hole transport layer, an active layer, an electron transport layer, and a metal cathode stacked sequentially. The active layer is composed of a donor material, an acceptor material, and a benzo[a]phenanthrene disk-shaped liquid crystal derivative. The benzo[a]phenanthrene disk-shaped liquid crystal derivative self-assembles into a two-dimensional columnar superlattice nanostructure. The benzo[a]phenanthrene disk-shaped liquid crystal derivative has the structure shown in Formula I and / or Formula II, where R1 and R2 independently comprise a cycloalkane-furanyl or adamantyl group. Based on the self-assembly behavior of the benzo[a]phenanthrene disk-shaped liquid crystal derivative, this invention constructs an ordered columnar superlattice structure by controlling its steric hindrance and dipole interactions, significantly improving the charge transport efficiency and energy conversion efficiency of the device.

This invention relates to a quantum dot light-emitting diode (LED) based on functional layer interface photocrosslinking modification and its fabrication method, belonging to the field of optoelectronic materials and devices technology. The diode comprises sequentially stacked ITO glass substrate, hole injection layer, organic hole transport layer, quantum dot light-emitting layer, electron transport layer, and cathode. Its core technology lies in introducing an interface modification layer at at least one functional layer interface of the device, formed by photoinduced crosslinking of 4-(3-trifluoromethyl-3H-diazacyclopropene-3-yl)benzoic acid. Optionally, this modification layer further comprises a pentaerythritol tetra(3-mercaptopropionate) post-treatment layer. The interface modification can be located between ITO and the hole transport layer, between the quantum dot layer and the electron transport layer, or between the electron transport layer and the cathode. The fabrication method of this invention is simple, has good compatibility with solution processing technology, and can effectively suppress interfacial ion migration, passivate surface defects, and improve device stability.

The application discloses a kind of tin oxide-based organic solar cell devices based on organic small molecule modification and preparation method thereof.The battery device structure of the application is sequentially from bottom to top: transparent substrate, conductive cathode, electron transport layer, photoactive layer, hole transport layer and metal anode, the electron transport layer is composed of lower metal tin oxide and upper small molecule (2-(3-1,10-phenanthroline group)-6-naphthyl) diphenyl phosphine oxide composite electron transport layer, under the condition of AM1.5G light source, 27.64mA·cm ‑2 Short-circuit current is obtained, and fill factor is increased to 74.93%, and more than 17% photoelectric conversion efficiency is realized, which has great application prospect in future engineering application.

The application discloses an ultrafast response organic photoelectric detector based on light field control, which has a bulk heterojunction structure and sequentially comprises a transparent substrate, an anode, a hole transport layer, a photosensitive layer, an electron transport layer, a hole blocking layer and a cathode. 70 The photosensitive layer is a blending layer of an electron donor material and an electron acceptor material. 60 The electron transport layer material is C 60 The material of the hole transport layer is Rubrene or TAPC. The application adopts the light field control mode, suppresses the diffusion process of excitons, realizes the ultrafast response speed, reaches the sub-nanosecond response in the red light band, and the highest bandwidth is up to 970MHz.

This invention provides a ferrocene-perylene imide composite small molecule compound, its preparation method, and its application, belonging to the field of organic solar cell technology. The compound provided by this invention has the structure shown in Formula I, combining the high electron mobility and high electrical conductivity of perylene imide and ferrocene units. Simultaneously, the presence of ester groups in the molecular structure ensures good film-forming properties when used as an electron transport layer material, while also endowing it with thickness insensitivity, which is beneficial for its commercial application.

Provided are: a perovskite solar cell excellent in durability; a liquid composition suitably used for forming a photoelectric conversion layer in manufacturing of the perovskite solar cell; and a method for manufacturing the perovskite solar cell using the liquid composition. A perovskite solar cell (1) comprises, in the given order, the following: a first electrode layer (20), a hole transport layer (30), a photoelectric conversion layer (40), an electron transport layer (50), and a second electrode layer (60). Contained between the first electrode layer (20) and the second electrode layer (60) is: at least one compound selected from the group consisting of ascorbic acid compounds, phenolic compounds, and unsaturated compounds; at least one oxygen atom-containing compound selected from succinic acid compounds and phosphorus compounds; or diphosphorus pentoxide.

The application discloses a solar cell, a photovoltaic device, an electric device and a power generation device. The solar cell comprises a first electrode layer, a light absorption layer, a passivation layer, an electron transport layer and a second electrode layer which are arranged in layers, and the passivation layer comprises a passivation material; or the solar cell comprises a first electrode layer, a light absorption layer, an electron transport layer and a second electrode layer which are arranged in layers, and the light absorption layer or the electron transport layer comprises a passivation material; wherein the passivation material comprises a cationic group and an anionic group. The application utilizes the passivation material to optimize the energy level matching degree between the upper surface of the light absorption layer and the electron transport layer, passivates the surface defects of the light absorption layer, facilitates electron transport and improves the photoelectric conversion efficiency of the solar cell.

The application discloses an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode, a light-emitting layer arranged between the cathode and the anode, an electron transport layer arranged between the cathode and the light-emitting layer, and an electron blocking layer arranged between the anode and the light-emitting layer; wherein the electron transport layer comprises a first compound, the electron blocking layer comprises a second compound, and the light-emitting layer comprises the first compound and the second compound, wherein the first compound has a structure represented by formula 1. The specific organic layer of the electroluminescent device can save material types, reduce the influence of interface generation, and comprehensively improve the voltage, current efficiency, power efficiency, external quantum efficiency and life performance of the device.

The application provides an electron transport layer material, a preparation method thereof and an organic electroluminescent device, and the electron transport layer material has a structure shown in chemical formula I. The material of the application synergistically acts with a 9-alkyl-9-phenylfluorenyl group and a bistrizine group, is used as an electron transport layer material in a blue light device, has good thermal stability and a film morphology, can improve the light-emitting efficiency of the device, prolong the service life, and reduce the driving voltage.

To provide a photodetector element that exhibits minimal decrease in external quantum efficiency when irradiated with light for extended periods. [Solution] A photodetector comprising a first electrode layer 11, a second electrode layer 12, a photoelectric conversion layer 13 located between the first electrode layer 11 and the second electrode layer 12, and an electron transport layer 21 located between the first electrode layer 11 and the photoelectric conversion layer 13, wherein the photoelectric conversion layer 13 contains quantum dots, and the electron transport layer 21 contains a polymer having a polymer chain containing structural units derived from an n-type organic semiconductor.

Provided is a solar cell (101) that can be manufactured by a wet process and a method for manufacturing the same. The solar cell (101) of the present invention is characterized by being a solar cell (101) provided with an electron transport layer (43), an active layer (44), and a hole transport layer (45), wherein the active layer (44) contains a perovskite semiconductor, the electron transport layer (43) contains at least any one of ZnO, MgZnO, or SnO, and the hole transport layer (45) contains at least any one of NiO or MoO.

This invention belongs to the field of semiconductor technology and discloses a pixel unit and its manufacturing method, a display panel, and a display device. The manufacturing method of the pixel unit includes the following steps: S1, fabricating an anode structure, a filler layer located between the anode structures, and a pixel definition layer on a substrate; S2, fabricating and patterning a hole transport layer on the side of the anode structure and filler layer away from the substrate, such that the hole transport layer has a grid-like opening pattern corresponding to the gaps between the anode structures; S3, fabricating an insulating main grid on the side of the grid-like opening pattern away from the substrate; S4, sequentially fabricating an organic light-emitting layer and an electron transport layer on the side of the hole transport layer away from the substrate, wherein the upper surface of the electron transport layer is not higher than the upper surface of the insulating main grid. This invention simplifies the structure and process by simultaneously forming a blockage against lateral current and light through an insulating main grid, while also considering the adhesion of the blocking structure and the pixel aperture ratio.

The present invention relates to an active OLED display, a method of manufacturing an active OLED display and a compound. In particular, the present invention relates to a display device comprising: - a plurality of OLED pixels comprising at least two OLED pixels, the OLED pixels comprising an anode, a cathode and an organic layer stack, wherein the organic layer stack is arranged between and in contact with the cathode and the anode and comprises a first electron transport layer, a first hole transport layer and a first light emitting layer disposed between the first hole transport layer and the first electron transport layer, and - a drive circuit, wherein for the plurality of OLED pixels the first hole transport layer is disposed in the organic layer stack as a common hole transport layer that is common to the plurality of OLED pixels and comprises (i) at least one first hole transport matrix compound consisting of covalently bound atoms, and (ii) at least one p-type electrical dopant.

The application belongs to the technical field of OLED and specifically comprises an organic composition for an organic electroluminescent device and an organic electroluminescent device comprising the same. The organic composition comprises a first compound as a first hole transport layer material, a second compound as a second hole transport layer material and a third compound as an electron transport layer material; wherein the general structural formula of the first compound is shown as formula I, the general structural formula of the second compound is shown as formula II, and the general structural formula of the third compound is shown as formula III. The layer formed by the first compound and the layer formed by the second compound jointly constitute a hole transport region, which can match the hole mobility of the whole hole transport region with the electron mobility of the electron transport layer formed by the third compound, so that the transmission of holes and electrons to the light-emitting layer is more balanced, the carrier recombination probability of the light-emitting layer is improved, the device efficiency is improved, and the device voltage is reduced.I;II;III.