47results about How to "Improve electrical output performance" patented technology

The present invention provides a sheet for sealing a rear surface of a solar cell in which degradation due to hydrolysis of the material constituting the solar cell is prevented, and the weather resistance is excellent such that electric output properties of the solar cell can be maintained not only under conditions of actual usage of the solar cell module but also conditions for evaluation under high temperatures and high moistures, and provides a sheet for sealing a rear surface of a solar cell comprising a laminate in which at least two substrates are laminated by an polyurethane-based adhesive, wherein the polyurethane-based adhesive comprises an adhesive having hydrolysis resistance which satisfies the following conditions: condition 1: the lamination strength of the adhesive is 1 N / 15 mm or more after keeping the laminate in a chamber which acts as a highly accelerated stress test system under pressurized steam conditions of 105° C. and 1.05 atm for 168 hours; and condition 2: the adhesive does not bring on a delamination and a blister between the substrates after keeping the laminate in a chamber which acts as a highly accelerated stress test system under pressurized steam conditions of 105° C. and 1.05 atm for 168 hours.

The invention discloses a samarium isotope minisize cell and a manufacturing method thereof. The cell is formed by a transduction unit and an appurtenance. The transduction unit comprises: samarium-151 radioactive source sheet, a Si3N4 layer and a silicon-based PN junction. The appurtenance comprises: an outer encapsulation layer, a ring electrode, a positive lead, a positive electrode, a gold layer, a pedestal, a negative electrode, a negative lead, a ceramic chip and an inner encapsulation layer. The Si3N4 layer is located on an upper surface of the silicon-based PN junction. The ring electrode is on an epitaxy of the Si3N4 layer. The samarium-151 radioactive source sheet is fixed on the upper surface of the Si3N4 layer by using the inner encapsulation layer. A lower surface of the silicon-based PN junction is the gold layer. One end of the negative lead is connected with the gold layer and the other end is connected with the negative electrode. One end of the positive lead is connected with the ring electrode and the other end is connected with the positive electrode. The ceramic chip is located below the gold layer. The ceramic chip is located on the very center of the pedestal. The outer encapsulation layer covers the outside of the pedestal. The samarium isotope minisize cell of the invention has a small size and can work without energy provided from the outside. The cell can continuously output a 100nA-muA current and 0.1muA-1muA for more than 45 years. The manufacturing method of the invention is safe and reliable.

The invention provides a method for preparing a polydimethylsiloxane film, comprising: adding a curing agent to the polydimethylsiloxane, stirring evenly to obtain a mixture; doping the mixture with negatively charged micro-nano particles on the surface Polydimethylsiloxane slurry is obtained; the polydimethylsiloxane slurry is coated on the template, and the film is degassed, and then the film is dried; the film is immersed in an alkaline solution or an alkaline The solution is sprayed on it, followed by washing and drying to obtain a polydimethylsiloxane film. The invention also provides the polydimethylsiloxane film prepared by the method and a triboelectric generator using the film. The method of the invention realizes the modification of the polydimethylsiloxane, improves the negative charge of the film, and thus improves the electrical output performance of the triboelectric generator using the polydimethylsiloxane film.

The invention relates to a method for preparing a flexible three-dimensional porous graphene / polydimethylsiloxane composite friction nanogenerator, comprising: preparing a flexible three-dimensional porous graphene film by using an ice template method to assist gravity self-assembly, and using Joule heat The three-dimensional porous graphene / PDMS composite film is prepared by the method of assisted adsorption, and the three-dimensional porous graphene / PDMS composite film is connected with the current collector to prepare the triboelectric nanogenerator. The invention has a simple manufacturing process, uses graphene synthesized by chemical methods on the market, and has low cost; the prepared three-dimensional porous graphene / polydimethylsiloxane composite friction nanogenerator has a simple structure, is soft and light, and can be used in complex and multi-functional It is used in a variable environment, and has excellent mechanical properties and good cycle stability. Due to the good electrical conductivity of the graphene film and the large roughness of the PDMS surface, the generator has excellent electrical properties and working efficiency.

A dumbbell-shaped piezoelectric force-electric transducer provided by the present invention includes a frame, a piezoelectric material, a screw and a mass block, wherein the piezoelectric material is provided with a plurality of piezoelectric materials along the circumference The directions are evenly distributed in the frame; one end of the screw is connected to the frame, and the other end is connected to the mass block; compared with the traditional cantilever beam force-electric transducer, since the piezoelectric material is in a clamped state, it works in 33 modes , only bears normal stress, so the piezoelectric material is not easy to crack, so the stability of the transducer with this structure is higher. Compared with the traditional 31-mode cantilever beam transducer, its service life will be significantly improved.

This invention is tin dioxide membrane and silicon heterojuncion solar battery in the field of semiconductor technology. It concludes: battery counter-light side grating electrode, fluorine-doped tin dioxide layer, silicon dioxide layer, n type silicon base, intrinsic non-crystalline silicon membrane, phosphor- doped non-crystalline silicon membrane and aluminium back electrode. The battery counter-light side grating electrode is on the top of the tin dioxide layer which is mixed into fluorine. A layer of silicon dioxide is interlaid between the tin dioxide layer which is mixed into fluorine and n type silicon base. At the back of n type silicon base deposit the intrinsic non-crystalline silicon membrane, phosphor mixing with non-crystalline silicon membrane and aluminium back electrode in turn. This invention reduces membrane series-wound resistance. The intrinsic non-crystalline silicon membrane, phosphor mixing with non-crystalline silicon membrane and silicon slice form high-low junction and improve battery electricity exporting ability. The efficiency of solar battery can reach 13% under 100mW / cm standard light intensity.