42results about How to "Improve solar conversion efficiency" patented technology

Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.

The present invention provides a mounting unit for solar panels that simplifies the complexity of storage, transit and in-field installation of solar electric generation systems. According to one embodiment, the mounting unit comprises a top panel, a bottom panel and a pair of panel guides, each formed integral with and adjacent to an opposing side of the top panel. Each panel guide includes a horizontal portion for supporting a solar panel and a vertical portion for providing an air channel between a bottom surface of the solar panel and an upper surface of the top panel. The air channel enables natural convection to cool the solar panel and optionally a power conversion device used within the system, thereby improving the solar conversion efficiency of the system. An improved method for installing a solar electric generation system is also provided herein.

The invention relates to a water quality monitoring unit, and an apparatus, a method and a system thereof. The water quality monitoring unit comprises a monitoring module, a transmission control module and a power supply module; the monitoring module is used for detecting water quality information according to the control of the transmission control module and transmitting the obtained data to the transmission control module; the transmission control module receives an external instruction, controls the monitoring module to work according to the instruction, processing received data and transmitting the processed data; and the power supply module supplies electricity power to the monitoring module and the transmission control module. Water quality monitoring and solar power supply are simultaneously realized, so the water quality monitoring unit can be individually used and can cruise for a long time, and the transmission control module can receive extraneous control, can realize water quality monitoring in real time, and can timely find a pollution fountainhead, so the water quality problem is timely solved, and crises are prevented before the crises emerge.

A dye-sensitized solar cell with internal microlens array includes an anodic electrode, a cathodic counter-electrode, and an electrolyte. The anodic electrode includes a porous nano-structured active metal oxide layer having a sensitizer dye adsorbed thereon. In one embodiment, a microlens array comprising a plurality of microlens elements is disposed between the electrodes, and preferably between a transparent substrate of the anodic electrode and active metal oxide layer for dispersing light incident on the substrate to the active oxide layer. In some embodiments, the microlens elements may be convex or concave in configuration. The microlens array improves solar conversion efficiency of the solar cell. A method for forming a microlens array is further provided.

The invention provides a high-stability carbon nanometer fluorescence dye. The high-stability carbon nanometer fluorescence dye is coated on the surface of a conventional luminescent material, can be used for changing a luminescent spectrum and comprises a carbon nano-dot fluorescent material, a thinning agent, a binding agent and a fluorescent dyeing matter. The high-stability carbon nanometer fluorescence dye is characterized in that the carbon nano-dot fluorescent material is mixed with the thinning agent to form a fluorescent solution containing the carbon nano-dot fluorescent material; the fluorescent solution is uniformly mixed with the binding agent to form a fluorescent binding agent; and the fluorescent binding agent is combined with the fluorescent material. The high-stability carbon nanometer fluorescence dye provided by the invention has the characteristics of transparency, stability, no toxicity, environmental protection, low cost, simplicity in use and the like. The high-stability carbon nanometer fluorescence dye can be widely applied to the fields such as color long afterglow, light emitting display, light conversion agents, anti-fake fluorescent materials and various coatings.

The invention provides a preparation method of a graphene oxide-based porous photo-thermal material capable of efficiently generating solar steam. The preparation method comprises the following steps: S1, preparing graphene oxide by a hummers method; S2, preparing a directionally arranged graphene oxide-based porous photo-thermal material; and S3, preparing a hydrophilic and oleophobic graphene oxide-based porous photo-thermal material. According to the invention, directional freezing and simple carbonization are taken as main means, and a synthesis method of the graphene oxide-based porous photo-thermal material which can efficiently generate solar steam and has aligned channels and oleophobicity is introduced; the invention further provides the application in seawater desalination and (oil-containing or dye-containing) wastewater purification treatment; and the graphene oxide-based porous photo-thermal material disclosed by the invention has relatively high solar energy conversion efficiency and excellent salt resistance and pollution resistance, and has a certain practical application value in the aspects of seawater desalination and (oil-containing and dye-containing) wastewater purification treatment in the future.

The invention discloses an indium tin oxide nanowire array composite, a method for preparing the indium tin oxide nanowire array composite and the application of the indium tin oxide nanowire array composite in a solar cell. The indium tin oxide nanowire array composite comprises an indium tin oxide nanowire array which is generated on a conducting substrate, and cuprous sulfide nano-particles are wrapped on the indium tin oxide nanowire array. The method for preparing the indium tin oxide nanowire array composite comprises the steps that (1) the indium tin oxide nanowire array is generated on the conducting substrate through deposition by means of the chemical vapor deposition method with gold nanoparticles as a catalyst; (2) CdS nano-particles are wrapped on the indium tin oxide nanowire array by means of the chemical bath deposition method; (3) the CdS nano-particles are converted into the Cu2S nano-particles by means of the ion exchange method, and then the composite is obtained through calcinations in the inert atmosphere. The performance of the constituted solar cell with a counter electrode material made of the Cu2S@ITO nanowire array prepared with the method is far better than that of a solar cell with a counter electrode material made of precious metal Pt or Au and a transition metal chalcogen compound of a metal matrix.

The invention discloses a solar wafer, which comprises an N-type substrate, a P-type mingling layer arranged on the surface of the N-type substrate, an N+-type mingling layer arranged on the back face of the N-type substrate, a first passivation layer arranged on the surface of the P-type mingling layer, a second passivation layer arranged on the surface of the first passivation layer, surface electrodes arranged on the second passivation layer and back face electrodes arranged on the N+-type mingling layer. The P-type mingling layer is formed by conducting annealing treatment on P-type ions injected in ion injection mode, annealing temperature is higher than 900 DEG C, and annealing time is more than 30 seconds. A preparation method of the solar wafer is further disclosed. The ion injection method is adopted to prepare the solar wafer so that dose, mingling depth and uniformity of mingled ions can be effectively and accurately controlled. Ideal square resistors can be obtained, and actually obtained solar conversion efficiency of products is higher and closer to laboratorial theoretical design value.

The invention discloses a silicon-based single-sided integrated absorption emitter for a solar thermal photovoltaic cell. The silicon-based single-sided integrated absorption emitter comprises a top-layer solar concentrating system, a selective absorption emitter at the bottom, a narrow-band-gap photovoltaic cell surrounding the selective absorption emitter and a heat storage layer at the lower part of the selective absorption emitter; and the selective absorption emitter comprises a silicon wafer substrate and a plurality of fan-shaped side wall nanopore arrays which are arranged on the silicon wafer substrate and have different depth levels. The silicon-based semiconductor metal composite structure easy to prepare without photoetching provided by the invention can be applied to a single-sided integrated absorption emitter of a solar thermal photovoltaic system by utilizing the unique optical characteristics of the silicon-based semiconductor metal composite structure, and higher solar conversion efficiency is obtained.

The invention discloses a high-strength multilayer-film photoelectric glass and a preparation method thereof. The multilayer-film stack photoelectric glass comprises a glass substrate, wherein a silicon dioxide layer, an aluminum oxide film layer and an AZO (aluminum-doped zinc oxide) film layer are arranged on the glass substrate in sequence. The preparation method comprises the following steps: 1. the glass substrate is pre-cleaned; 2. Step 1 is repeated for 3 to 4 times, and then the pre-cleaned glass substrate is dried in a vacuum drying oven; 3. the glass substrate goes through ion beam sputter cleaning under a vacuum condition; 4. under the environment where argon serves as the working gas, sputtering target materials are sputtered on the surface of the glass substrate through magnetron sputtering to form linings, the sputtering target materials are silicon dioxide, aluminum oxide and AZO, and the linings are the silicon dioxide layer, the aluminum oxide film layer and the AZO film layer. The invention achieves the reflection, refraction and scattering of incident sunlight through the co-action of the aluminum oxide film layer and the AZO film layer, so that the photoelectric property of an AZO film is improved.

The invention discloses a green building capable of saving energy by utilizing solar energy and relates to the technical field of green buildings. The green building comprises a green building body, asolar panel and an adjusting device, wherein the solar panel is arranged on a right surface of the green building body, the solar panel comprises a first solar panel body, a first through groove andsecond through grooves, the first through groove is formed on a right surface of the first solar panel, the second through grooves are formed on front and rear inner walls of the first through groove,a first wiping rag is fixedly connected with an upper inner wall of the first through groove, a second wiping rag is fixedly connected with a lower inner wall of the first through groove, a second solar panel is arranged in the first through groove, a sealing plate is fixedly connected with a right surface of the second solar panel, a first sliding block is fixedly connected with a front surfaceof the second solar panel and a front surface of the sealing plate, and a second sliding block is fixedly connected with a rear surface of the second solar panel and a rear surface of the sealing plate. The green building has properties of high quality, high efficiency and the like.

An exemplary working electrode includes a transparent conductive substrate, a nanorod layer formed on the transparent conductive substrate, and a porous semiconductor layer formed on the nanorod layer. The nanorod layer includes a plurality of nanorods. Each nanorod is comprised of a material selected from the group consisting of iridium-iridium oxide and ruthenium-ruthenium oxide. The porous semiconductor layer has a dye sensitizer adsorbed thereon.

The invention provides a film used for a photovoltaic module, the photovoltaic module and a preparation method. The film used for the photovoltaic module comprises an adhesive layer and a PET layer from the bottom up in sequence; and the film is only used for covering a solder strip on the photovoltaic module and/or regions between battery pieces on the photovoltaic module. After the solder stripis covered with the film disclosed in the invention, EVA packaging is performed; and PET has an isolation effect, and soldering flux residue on the solder strip is not in direct contact with packagingEVA, so that the bad consequences caused by a chemical reaction between the two parties can be eliminated completely.

The invention discloses a power generation optimization method considering clean energy. The power generation optimization method comprises the following steps: S1, a flat, continuous, open and gentle zone with a terrain orientation (south-north) and a certain soil layer thickness is selected; S2, a rotating mechanism is installed on the base, wherein the rotating mechanism drives the solar power generation panel to rotate according to the sunlight irradiation intensity; S3, a fixing mechanism is installed at the top of the rotating mechanism, the solar power generation panel is fixedly installed at the top of the fixing mechanism, the fixing mechanism can fix the solar power generation panel to prevent the solar power generation panel from shaking, and the stability of light energy absorption of the solar power generation panel is guaranteed; and S4, a light condensation film is attached to the surface of the solar power generation panel, and the light condensation film can collect slowly-reflected sunlight incident in the illegal line direction. The utilization rate of solar energy is increased, a rotating mechanism drives the solar power generation panel to rotate according to the sunlight irradiation intensity, and therefore the solar power generation panel can adapt to illumination conditions in different time periods; and therefore, the luminous efficiency of the power generation panel is ensured.

The utility model discloses a flat-plate solar thermal collector which comprises a plurality of frame strips, connecting pieces, a shell plate, an inner discharge pipe, a lighting panel and lighting glass, wherein a water inlet and a water outlet are formed in the inner discharge pipe; the frame strips are enclosed into a polygonal frame, and every two adjacent frame strips are connected through the connecting piece; the shell plate and the lighting panel are respectively positioned at the two ends of the frame, and the inner discharge pipe is positioned in the frame and closely jointed with the lighting panel; the lighting glass is arranged on the upper surface of the lighting panel; a plurality of mounting holes (6) are formed in the two ends of each frame strip, and the two ends of each connecting piece are inlaid into the mounting holes (6), so that the two adjacent frame strips are closely jointed; a plurality of caved blind holes are formed in the surface of the lighting glass. The flat-plate solar thermal collector has good solar conversion efficiency.