273results about How to "Improve photoelectric properties" patented technology

The invention relates to a graphene/TiO2-based near-infrared/ultraviolet radiation resistant polymer composite film and a preparation method thereof, relating to a near-infrared/ultraviolet radiation resistant composite film and a preparation method thereof. The invention aims to solve the problems of the existing heat reflecting material such as poor heat insulation effect, low transparency, serious light pollution and high production cost and the like. The composite film is prepared by adding the mixed liquid of graphene oxide dispersion and nano-TiO2 dispersion in the curing system of epoxy acrylate at a volume ratio of 1-10:50. The preparation method comprises the following steps: 1) preparing graphene oxide; 2) preparing TiO2 nanoparticles; 3) preparing nanometer graphene/TiO2 composite; and 4) preparing the graphene/TiO2-based near-infrared/ultraviolet radiation resistant polymer composite film. The composite film is mainly used for the glass coating of a building or means of transport for running an air-conditioning system.

The invention relates to an ultraviolet detector, in particular to a visible-blind ultraviolet detector based on a Beta-Ga2O3/SiC heterojunction thin film and a fabrication method of the visible-blind ultraviolet detector. According to the fabrication method, a layer of Beta-Ga2O3 thin film is deposited on an n-type 6H-SiC substrate by a laser molecular beam epitaxial technique, and then a layer of Ti/Au thin film is deposited on the n-type 6H-SiC substrate and the Beta-Ga2O3 thin film through a mask by a radio frequency magnetron sputtering to be used as an electrode. The fabricated visible-blind ultraviolet detector has the advantages of stable performance, response sensitivity, small dark current and high potential application; and moreover, the fabrication method has the characteristics of high process controllability, simplicity in operation, high universality, restorability of repeated test and the like, and has great application prospect.

The invention relates to photovoltaic cell, in particular to a solar cell of a perovskite structure and a preparing method of the solar cell. Firstly, a titanium oxide or zinc oxide n-type compact layer is deposited on FTO conductive glass; secondly, an aluminum oxide barrier layer is deposited, then a layer of hybridized perovskite structure CH3NH3PbI3 is prepared, an aluminum oxide insulation layer is continuously deposited, and then an organic P-type layer is deposited; lastly, a metal electrode layer is deposited. The perovskite structure CH3NH3PbI3 is wrapped by the barrier layer and the insulation layer to form a sandwich protection structure, and the stability of the perovskite cell is effectively improved.

A thin film transistor and a manufacturing method thereof are provided. The thin film transistor includes a gate, an oxide channel layer, a gate insulating layer, a source, a drain and a dielectric layer. The gate is disposed on a substrate. The oxide channel layer, disposed on the substrate, is stacked with the gate. A material of the oxide channel layer includes a metal element. The metal element content shows a gradient distribution along a thickness direction of the oxide channel layer. The gate insulation layer is disposed between the gate and the oxide channel layer. The source and the drain are disposed in parallel to each other, and connected to the oxide channel layer. Sides of the source and the drain, facing away from the substrate, are covered by the dielectric layer.

The invention relates to a perovskite solar cell with stable performance in an air environment and a preparation method of the perovskite solar cell. The solar cell sequentially comprises a conductive base, an electron blocking layer, an electron transport layer, a perovskite sensitization layer, a hydrophobic interface layer, a hole transport layer and a metal layer from bottom to top. The preparation method comprises the following steps: depositing the electron blocking layer and the electron transport layer on the conductive base; depositing the perovskite sensitization layer; depositing the hydrophobic interface layer; depositing the hole transport layer; and depositing the metal layer. According to the perovskite solar cell provided by the invention, the stability of the perovskite cell in air is obviously improved.

The invention discloses a compound based on xanthone and application thereof. The compound uses xanthone as a parent nucleus, which is connected to a heteroaromatic group, so as to destroy the molecular symmetry, and thus further destroy the crystallinity of molecules and avoid the aggregation between molecules. The compound based on xanthone has good film-forming property, and can be applied to organic light emitting diode as a luminescent layer; and the OLED device using the compound based on xanthone has good photoelectric property, and can meet the requirements of panel manufacturing enterprises.

A method for producing a product of a functionalized nanocomposition colloidal material using atomic layer deposition to coat the colloidal material. The ALD layer comprises an inorganic material which enables improved optical and electrical properties for the nanocomposite.

Metal base plate with high conductivity and high reflectance is adopted in the invention instead of traditional extinctive gallium arsenide base plate, and after diodes are made, two adjacent LED are connected in series through semiconductor fabricating process. Mirror protective layer is adhibited in order to protect metal reflecting layer p and n poles, in which one is higher and the other is lower, of epitaxy chip of LED so as to form LED with p and n poles being at same side. Trench at joint place between two adjacent epitaxy chips of LED is etched out, and a dielectric layer is filled into the trench in order to protect sidewall of adjacent LED. The invention raises luminous efficiency of LED, and increases luminous intensity.

The invention relates to an ultraviolet detection device based on a gallium oxide thin film and a preparation method thereof, in particular to an ultraviolet detection device based on a gold nanoparticle enhanced Ga2O3 thin film and a preparation method thereof. The preparation method includes the steps that a layer of Ga2O3 thin film is deposited on a Si substrate according to the radio-frequency magnetron sputtering technology; then, a layer of gold thin film is deposited on the surface of the Ga2O3 thin film, the obtained gold thin film is subjected to spheroidizing annealing, and thus gold particles are obtained; finally, a layer of gold thin film interdigital electrodes are deposited on the Au-Ga2O3 thin film with a mask. A photoelectric property testing result of the ultraviolet detection device shows that the device has good photoelectric responses. The ultraviolet detection device based on the gold nanoparticle enhanced gallium oxide thin film and the preparation method thereof have the advantages that the prepared ultraviolet detection device based on the gold nanoparticle enhanced gallium oxide thin film is stable in property, capable of making sensitive responses and small in dark current and has good potential application; besides, the preparation method is strong in process controllability, easy to implement and good in universality, has restorability in repeated testing and has broad application prospects.

The invention discloses an organic compound containing dimethyl anthracene and application of the organic compound. The structural formula of the compound is as shown in the formula (1). The compound disclosed by the invention is relatively high in glass state temperature, good in molecular thermal stability, appropriate in HOMO and LUMO energy grade and relatively high in Eg, and through device structure optimization, the photoelectric property of an OLED device can be effectively improved, and the service life of the OLED device can be effectively prolonged.

The invention refers to the technical field of semiconductor manufacturing, and particularly relates to a manufacturing method of a backside image sensor. The manufacturing method of the backside image sensor comprises the steps: forming an interconnection hole through etching a bonded wafer, and filling a metal to form a metal lead; meanwhile, synchronously preparing a metal isolating grid and a Pad layer contacted with the metal lead at the back side of the bonded wafer, and then embedding a color filter in the metal isolating grid. According to the manufacturing method of the backside image sensor, a metal layer in the bonded wafer can be derived and integrated with the Pad, thus requirements of simple and low-cost manufacturing technique can be realized on a certain extent; meanwhile, the metal isolating grid synchronously prepared with the Pad provides a good embedding environment for the subsequent color filter, a light path is minimized, and the optical-electrical characteristic and the output quality of the backside image sensor are greatly improved.

A substrate includes a non-conductive portion to be electroless-plated of a substrate, on the surface of which fine metal catalyst particles composed of silver nuclei and palladium nuclei each having an average particle size of 1 nm or less adhere at a high nuclei density of 2000 nuclei/mum2 or more. The metal catalyst particles are produced by sensitizing the non-conductive portion of the substrate by dipping the substrate in a sensitizing solution containing bivalent tin ions, activating the non-conductive portion of the substrate by dipping the substrate in a first activator containing silver ions, and activating the non-conductive portion of the substrate by dipping the substrate in a second activator containing palladium ions.

The invention discloses a method for preparing a backside-polished PERC battery. The method comprises: (1), depositing a single-sided protective film on the backside of a silicon wafer; (2) carrying out texturing on the silicon wafer plated with the single-sided protective film and removing the single-sided protective film of the silicon wafer during a pickling process after texturing; (3), carrying out diffusion on the single-sided-textured silicon wafer; (4), carrying out conventional secondary cleaning; and (5), depositing aluminium oxide/silicon nitride laminated passivation film at the back side, carrying out laser grooving, screen printing and sintering, thereby obtaining a backside-polished PERC battery. According to the method disclosed by the invention, the volume production threshold is low; the operation cost is low; micro-nano flatness is realized; and the photoelectric conversion of the battery is improved.

A touch panel includes a substrate, first and second touch sensing electrodes, and first and second traces. The substrate includes a display area and a peripheral area. The first and second touch sensing electrodes are formed on the display area, and the first and second traces are formed on the peripheral area. The first touch sensing electrode is formed by a first portion of a metal nanowire layer, which is patterned. The peripheral trace includes a conductive layer and a second portion of the metal nanowire layer, both of which are patterned in a co-etch step. The conductive layer and the second portion of the metal nanowire layer have a coplanar etched surface. The second touch sensing electrode is formed on an insulating layer and connects with the second trace.

The invention relates to a method for producing a composite transparent electrode by adopting a graphene film and a metallic network. The method includes the following steps that: egg white gel is prepared; a sheet body provided with a reticular crack gel mold sacrificial layer is prepared; a metallic network electrode is prepared; and the graphene film is prepared; and the composite transparent electrode can be obtained. According to the method of the invention, the egg white gel is adopted as the reticular crack mold and the sacrificial layer of the metallic network electrode, and the metallic network electrode in the composite electrode is prepared through utilizing magnetron sputtering or vacuum evaporation; the graphene film covers the metallic network electrode and a transparent insulating substrate; and the square resistance of the formed composite transparent electrode ranges from 25 to 30 Omega/sq, and the light transmittance of the composite transparent electrode ranges from 90 to 92 %. With the method adopted, production techniques can be simplified, the photoelectric characteristics and productivity of the composite transparent electrode can be improved, and the production cost of the composite transparent electrode can be effectively decreased. The method can be widely applied to photoelectric devices such as organic solar cells, organic light emitting diodes and touch screens. The method can be applied to preparation of large-area and high-quality composited transparent electrodes.