37 results about "Light-emitting electrochemical cell" patented technology

The present invention provides homoleptic and heteroleptic copper(I) complexes having sterically demanding ligands, such as the bis(2,9-di-tert-butyl-1,10-phenanthroline)copper(I) complex and related complexes, methods of synthesis of these complexes and uses thereof. These copper(I) complexes are useful for various applications including photovoltaic cells, light-emitting electrochemical cells, and analyte sensor systems.

Mixtures and light-emitting devices that incorporate such mixtures are disclosed in which a soluble phenyl-substituted poly(para-phenylene vinylene) (PPV) copolymer (“superyellow”) is used as the host light-emitting polymer and methyltrioctylammonium trifluoromethanesulfonate, an ionic liquid, is used to introduce a dilute concentration of mobile ions into the emitting polymer layer. These mixtures and devices incorporating them are able to combine some of the characteristics of polymer light emitting diodes (PLEDs) and polymer light-emitting electrochemical cells (PLECs).

The invention discloses ionic cuprous luminous complexes and a use thereof and relates to a synthesis method of neutral NN bidentate ligands, ionic mononuclear four-coordinate cuprous luminous complexes based on the neutral NN bidentate ligands and neutral PP ligands, and a use of the cuprous luminous complexes in an electronic device. The neutral NN bidentate ligands and the cuprous luminous complexes can be synthesized easily and have low costs. Through ligand modification, complex photoluminescence can be adjusted and red light-to-blue light high-efficiency emission is realized. The complexes provided by the invention are ideal materials for preparation of electronic devices such as organic light-emitting devices (OLED), light-emitting electrochemical cells (LEC) and organic solar cells (O-SC).

A light-emitting electrochemical cell comprising at least two electrodes, and an electroluminescent material arranged between said electrodes, wherein said electroluminescent material comprises a charged metal complex is disclosed. The charged metal complex has at least one metal atom selected from the group consisting of Ir, Os, Pt, Re and Zn, with the proviso that said metal complex is different from [Ir(ppy)2(dtb-bpy)]+(PF6) and [Os(bpy)2(dppe)]2+(PF6)2. A method for manufacturing such a light-emitting electrochemical cell is also disclosed.

A temperature indicator (1) for indicating a high temperature at a surface (13) comprises a light-emitting electro-chemical cell (4) having a first electrode (8), a second electrode (9) and a light-emitting layer (10) being sandwiched between the two electrodes (8, 9). The light-emitting layer (10) comprises a matrix and ions being movable in the matrix, the mobility of said ions in said matrix being temperature dependent. A power source (5) is adapted for driving the light-emitting cell (4) with an AC voltage. The frequency of the AC voltage is tuned in such a way that, above a certain temperature level, the ions move fast enough in the matrix to provide a sufficient charge gradient in the light-emitting electrochemical cell (4) for the light-emitting electrochemical cell (4) to emit light before the AC power source (5) shifts the polarity of the voltage.

A composition comprises a low molecular weight polyelectrolyte, a high molecular weight polymer, a light-emitting material and a salt. The viscosity average molecular weight of the high molecular weight polymer in at least one solvent is at least 5 times greater than the viscosity average molecular weight of the low molecular weight polyelectrolyte in the at least one solvent, and the high molecular weight polymer and the low molecular weight polymer are preferably different molecular weight polymers of the same polyelectrolyte material, such as polyethylene oxide. The composition is used to provide a light emitting layer (103) in a light-emitting electrochemical cell between an anode (101) for injecting positive charge carriers and a cathode (105) for injecting negative charge carriers.

A light-emitting electrochemical cell 10 includes an emitting layer 12 and electrodes 13 and 14, one on each side of the emitting layer 12. The emitting layer 12 contains a light-emitting material and an ionic compound. The ionic compound has general formula (1), wherein M is N or P; R1, R2, R3, and R4 each independently represent a C1-C20 saturated aliphatic group; and X is preferably an anion having a phosphoric ester bond or a sulfuric ester bond. The light-emitting material is preferably an organic light-emitting polymer, a metal complex, an organic low molecular compound, or a quantum dot.

Embodiments of the invention are directed to single layer light-emitting electrochemical cells that are enhanced by ionic additives, and methods of manufacture. These devices exhibit high efficiency, rapid response and long lifetimes.

The invention discloses a light emitting electrochemical cell, which comprises a first electrode, a light emitting layer and a second electrode arranged in a laminated mode, wherein the light emitting layer comprises a chemical compound [(C^N)2Ir(N^N)]<+>[B(ArFn)4]<->. Equilibrium ions in [B(ArF6)4]<-> can be recombined under external voltage, ionic conductivity is given to the chemical compound, ionic space charges are thus generated near each electrode, and injection of electron charges is assisted. The chemical compound has bipolar transmission performance, both electrons and charges can be transmitted, transmission of carriers can be realized effectively, and light emitting of the light emitting electrochemical cell is thus realized. The response time of the light emitting electrochemical cell can reach a microsecond level, color coordinates are CIEx,y(0.44, 0.53), the cell is a green light electrochemical cell, the efficiency is as high as 8.6 cd / A, and the highest brightness is 2.2*10<3> cd / m<2>.

The invention relates to an organic electroluminescent device light-emitting layer and a manufacturing method of the organic electroluminescent device light-emitting layer. The light-emitting layer is a doped system, and main materials of the light-emitting layer can also serve as ligands for forming object coordination compound. The light-emitting layer is manufactured in a solution processing (wet method) technique, so that the light-emitting layer is simple in process and low in cost. When the light-emitting layer is manufactured, the main materials and the object coordination compound are doped, or the main materials are directly doped with initial raw materials for forming the object coordination compound. The initial raw materials react with the main materials in a solution processing process to form the object light-emitting coordination compound to be doped with the residual main materials. The light-emitting layer and the manufacturing method of the light-emitting layer can be applied to organic electroluminescent devices of organic electroluminescent light-emitting diodes (OLEDs) and light-emitting electric chemical cells (LEC).

The invention relates to an organic electron transport layer n-dopant, the use of said n-dopant to construct organic electronic components, transistors, organic light-emitting diodes, light-emitting electrochemical cells, organic solar cells, photodiodes, and electronic components containing said n-dopant.

A temperature indicator (101) is adapted to be provided on a surface (116) for providing a first type of light emission and a second type of light emission (L2). The temperature indicator (101) comprises a light-emitting diode (108) for providing said first type of light emission and a light-emitting electrochemical cell (109) for providing said second type of light emission (L2). The light-emitting electrochemical cell (109) has a first electrode (120), a second electrode (121) and a second light-emitting layer (113) being sandwiched between them and comprising a matrix and ions being movable in the matrix, the mobility of said ions in said matrix being temperature dependent. A power source (105) is adapted for driving the cell (109) with an AC voltage, the frequency of which is tuned in such a way that the cell (109) provides said second type of light emission (L2) when the surface temperature exceeds a certain level.

Provided is a light-emitting electrochemical cell including a light-emitting layer 3, a first electrode 1, and a second electrode 2, wherein the light-emitting layer contains an ionic compound and the ionic compound contains an anion having a silicon atom. The anion has a silicon-containing group represented, for example, by SiR1R2R3 (R1 to R3 are all bonded directly to Si) and an anion group. The anion group is represented, for example, by —SO3−, —OSO3−, or —OP(OR0)O3−. R0 to R3 are each independently an alkyl group having 1 to 4 carbon atoms. Two alkyl groups selected from R1, R2, and R3 are optionally bonded to each other to form an alkylene group having 4 or 5 carbon atoms and constituting a cyclic structure together with the silicon atom.

The invention relates to ink for preparing a luminous layer of a flexible luminous electrochemical battery device and a preparation method and application of the ink. The ink for preparing a luminous layer of a flexible luminous electrochemical battery device is prepared from a transition metal complex, 1-butyl-3-methyl imidazole hexafluorophosphate, a polymer additive and an organic solvent, wherein the concentration of the transition metal complex in the ink is 20-80mg / mL; the concentration of the 1-butyl-3-methyl imidazole hexafluorophosphate is 2-8mg / mL; the concentration of the polymer additive is 4-16mg / mL. By use of the ink for preparing the luminous layer of the flexible luminous electrochemical battery device provided by the invention, printing of the luminous layer can be realized.

The invention discloses a light-emitting electrochemical cell and a preparation method thereof. The light-emitting electrochemical cell comprises indium tin oxide conductive glass, a polyethylene dioxygen thiophene layer, a light-emitting active layer and a metal electrode from bottom to top in sequence. The preparation method comprises the following steps that the light-emitting material, polyoxyethylene, ethoxylated trimethylolpropane triacrylate and lithium trifluoromethanesulfonate, and functional nanoparticles are mixed and dissolved in a solvent to prepare ink; and the ink is printed into a film through a microphone rod on the indium tin oxide substrate covered with a polyethylene dioxygen thiophene film, and annealing treatment is carried out; and the substrate is cooled to room temperature, the substrate is transferred into a vacuum chamber of a metal vapor deposition system, and an aluminum electrode is evaporated. The presence of the nanoparticles inhibits crystallization of the electrolyte in the active layer, and improves the phase separation condition of the active layer, and the surface roughness of the thin film is reduced by orderly guiding the stacking of the polymer luminescent materials, so that the prepared light-emitting electrochemical cell is high in carrier mobility and excellent in photoelectric property.

Charged organic thermally activated delayed fluorescence (TADF) species are described. A light-emitting electrochemical cell (LEEC) includes the charged organic thermally activated delayed fluorescence (TADF) species and sufficient counter ions to balance the charge on the charged organic thermally activated delayed fluorescence species, as emitter material. Also disclosed are OLEDSs containing the TADF species.

A structure for high performance light emitting electrochemical cells comprises at least two active layers of mixed ionic / electronic conducting materials, at least one of which is electroluminescent. The active layers are sandwiched between ion blocking electrodes, typically metal and / or transparent conducting oxide, that are electrically but not ionically conductive. Application of bias to the electrodes results in the polarization of ions at the electrodes thereby generating a field to drive the injection of electronic carriers into the active layer. The injected electron and holes recombine within the active layers to emit light. The ability to balance electron and hole injection in the design of such devices provides for optimal light emission efficiency.

The invention belongs to the field of organic light-emitting diodes and light-emitting electrochemical cells, and discloses a cationic metal complex iridium-iminoquinoline crystal material and a preparation method thereof. The preparation method comprises the following steps: coordinating unoccupied coordination sites of a phenyl pyrazole ring metal iridium dimer with nitrogen atoms on 2-fluorenyl imino quinoline to prepare a cationic metal complex iridium-imino quinoline, and carrying out diffusion culture on the cationic metal complex iridium-imino quinoline to finally obtain a crystal material of the metal complex. The iridium-iminoquinoline crystal material prepared by the invention has good optical performance and can be used as an optical device material.

The invention relates to a blue light ionic type iridium complex as well as a preparation method and application thereof. The complex takes an iridium complex as a luminescent center and is formed bythe coordination of a main ligand and an auxiliary ligand. The complex takes iridium as a luminescent center, is formed by the coordination of a main ligand and an auxiliary ligand, and has a generalstructural formula shown in formula 1 (as described in the specification), wherein the structure of D is shown in formula 2; the auxiliary ligand N^N may independently be one of tetrabutylammonium cyanide, pyridine, 2,2'-bipyridine, and 1,10-phenanthroline; (as described in the specification), wherein n is more than or equal to 1 and less than or equal to 20, and is a natural number; and * is a connection position. The blue light ionic type iridium complex provided by the invention is simple in material preparation, easy in control of a reaction process, easy in purification and separation ofa product, and high in yield and purity. This kind of material has good solubility and can be used to prepare efficient organic light-emitting diodes and organic light-emitting electrochemical cell devices by a solution method; and the obtained devices show good thermal stability and film-forming stability and have a potential application value in the aspect of organic light-emitting devices.

The layer structure has a substrate (1), a light emitting electrochemical cell (7) and an eletrotechnical component selected from the group that is made of an antenna (4), a switch, a sensor (5), a battery (8), photovoltaic cell, an actuator and an energy converter. The light emitting electrochemical cell and the component are formed on the substrate. The layer structure has a three-dimensional area. An independent claim is also included for a method for manufacturing a layer structure.

A light-emitting electrochemical cell (10) has: a light-emitting layer (12) containing a polymer material having a function of transporting electrons and holes, a light-emitting material emitting light by receiving holes and electrons from the polymer material or emitting light due to excitons generated by combination of holes and electrons on the polymer material, and an electrolyte; and an electrode (13, 14) disposed on each face of the light-emitting layer (12). The light-emitting material is a compound having a pyrromethene skeleton. The light-emitting layer (12) is preferably colorless and transparent in a visible light wavelength region in a state where voltage is not applied.