52 results about "Light conversion efficiency" patented technology

The invention belongs to the field of solar cell materials, and provides a compound A capable of being used as a light conversion agent, a light conversion adhesive film containing the compound A and a preparation method and application of the light conversion adhesive film. The compound A is used for the light conversion adhesive film, so that the light conversion efficiency of the light conversion adhesive film can be improved, and the absorption wavelength of the light conversion adhesive film can be regulated and controlled.

The invention provides a benzotriazole derivative and a resin composition containing the benzotriazole derivative. The benzotriazole derivative is of a 1H-site substitution type, and compared with a traditional 2H-site substitution type benzotriazole derivative light conversion material compound, the 1H-site substitution benzotriazole compound can remarkably improve the light conversion efficiency of a solar cell, especially the light conversion efficiency of the solar cell with a TOPCon photovoltaic module.

An eyewear display device implements a curved lightguide to form an intermediate image between an incoupler and an outcoupler. The curved lightguide produces an approximately 20-degree diagonal field of view (FOV) full-color display having approximately 10% red, blue, green efficiency with uniform color and luminance for a micro-display at a temple of an eyewear display device. The curved lightguide incorporates freeform mirror incouplers and / or outcouplers and color-corrected relay optics. Using an intermediate image stage in the optical pathway allows for use of a compact incoupler that does not exceed a thickness of the curved lightguide.

This invention discloses a method for enhancing and controlling the radiation of an LPP-EUV light source based on dual-pulse spatiotemporal co-constraint, belonging to the field of semiconductor manufacturing technology. This invention obtains a spatiotemporal reference by real-time monitoring of a liquid metal droplet, uses a pre-pulse laser to induce target material deformation into a fogged target cloud, and combines high-speed imaging and a hydrodynamic model to predict the time and coordinates of the target cloud's energy absorption peak. It dynamically adjusts the delay time and optical axis direction of the main pulse laser to achieve dual-pulse spatiotemporal co-constraint, and constructs a closed-loop control system through a recursive least squares algorithm with a dynamic forgetting factor. This invention effectively improves the extreme ultraviolet light conversion efficiency, controls the power fluctuation of the light source within ±0.5%, and extends the maintenance cycle of optical components by 2 times. It can be widely applied to next-generation high-power extreme ultraviolet lithography light source systems, meeting the application requirements of semiconductor miniaturization processes.

The invention discloses a photovoltaic power station irradiance component calculation method and device. According to the method, environmental parameters and multiple groups of historical operation data of a photovoltaic power station are obtained firstly, and then target historical operation data with corresponding slope clear sky irradiance and power actual value correlation meeting preset conditions are screened out according to the environmental parameters and the multiple groups of historical operation data. And finally, exhaustion of a light conversion efficiency prediction value is carried out based on the target power actual value and the target direct light conversion efficiency and the target scattered light conversion efficiency corresponding to the target timestamp, and when the residual error between the prediction power corresponding to the prediction value and the target power actual value is minimum, the target power actual value is obtained. And determining a clear sky irradiation direct component predicted value and a clear sky irradiation scattering component predicted value corresponding to the predicted light conversion efficiency as a clear sky irradiation direct component actual value and a clear sky irradiation scattering component actual value of the target timestamp. The difference between the conversion efficiency of the direct light and the conversion efficiency of the scattered light is fully considered, and the accuracy of irradiance component calculation is effectively improved.

A quantum-dot light conversion film, a preparation method and an application thereof and an anti-ultraviolet blue-free yellow light for chip manufacturing are provided. The preparation method includes: (1) mixing a quantum-dot concentrate with an acrylic monomer, then adding high polymer for secondary mixing, to obtain a polymer; (2) after mixing the polymer and nanoparticles, adding additives for dispersion to obtain a light conversion liquid resin; and (3) coating and curing the light conversion liquid resin to obtain a quantum-dot light conversion film. The light conversion film has high light conversion efficiency, adjustable emission peak position and narrow half peak width. Its surface forms a tightly arranged high refractive index microlens structure. When the light reaches the microlens array, as the light output surface is a lens structure and the refractive index is improved, more light is emitted in the positive direction, thereby effectively improving the light output rate.

This invention discloses a YAG-based composite laser ceramic and its preparation method. The composite laser ceramic has a five-layer structure from top to bottom: a microstructured concave YAG transparent ceramic, an Nd:YAG transparent ceramic, a YAG transparent ceramic I, a Ce,Nd:YAG transparent ceramic, and a YAG transparent ceramic II. The microstructured concave YAG transparent ceramic is used to reduce the temperature gradient and compensate for the thermal lensing effect; the Nd:YAG transparent ceramic is used to collect the energy emitted by the microstructured concave YAG transparent ceramic and to transfer the energy; the Ce,Nd:YAG transparent ceramic is used for laser energy transfer; and the YAG transparent ceramic I and YAG transparent ceramic II are used to reduce the ceramic thermal lensing effect. It is prepared using thermal bonding technology. The composite laser ceramic of this invention emits bright yellow light near 1064 nm when excited by a laser with a pump source of 808 nm. Furthermore, the composite laser ceramic has a light-to-light conversion efficiency of 19.85% and a laser threshold of 410 mW.

The application provides an omnidirectional following type reversing support, which comprises a supporting assembly, an adjusting assembly and a protection assembly, the supporting assembly is composed of a stand column, a transmission shaft is arranged on the top side wall of the stand column, a sleeve is movably sleeved on the surface of the transmission shaft, a linkage mechanism is arranged in the top end of the stand column, the adjusting assembly is composed of a horizontal plate and a photovoltaic panel, the photovoltaic panel is connected with the horizontal plate through a rotating frame, a rotating shaft is rotatably connected with the inside of the annular plate, the protection assembly is composed of a fixing base, a gear ring is arranged in the fixing base, and a connecting gear is fixedly connected to one end of a supporting plate. The application adopts a double-shaft adjusting mode to adjust the angle of the photovoltaic panel, realizes the omnidirectional following function to improve the light conversion efficiency as much as possible, and drives the adjacent reversing support, the sleeve is connected to realize the synchronous control of the angle of the same row of supports, realizes the synchronous control of multiple supports, the driving mechanism can drive the supporting plate to rotate and realize the support of the two sides of the photovoltaic panel, and the use strength of the reversing support is improved.

The invention relates to the technical field of micro light-emitting diodes, and discloses a CMP quenching resistant multi-color micro light-emitting diode light-emitting structure and a preparation method, the CMP quenching resistant multi-color micro light-emitting diode light-emitting structure comprises a substrate, the substrate is provided with a basic light source pixel unit array and a transparent photoresist pattern layer, and the transparent photoresist pattern layer is arranged on the substrate. The transparent photoresist pattern layer is used for filling a gap area between adjacent basic light source pixel units, and is used for providing a flat supporting surface for subsequent chemical mechanical polishing (CMP) without bearing a shading function. According to the invention, the quantum dots are coated by the inorganic-organic shell layer, so that the influence of a CMP polishing solution and mechanical grinding can be isolated, the light conversion efficiency and stability of multi-color display are ensured, the transparent photoresist focuses on filling gaps and supporting CMP, and the thickness uniformity of the quantum dot filter layer is improved by optimizing the filling structure and thickness and avoiding the collapse of a film layer in the CMP process.

The invention provides a vertical-structure Micro-LED chip and a preparation method thereof, and belongs to the technical field of semiconductor light-emitting devices. The vertical-structure Micro-LED chip comprises a conductive substrate, a metal bonding layer, an epitaxial structure, a quantum dot structure and a passivation layer, the conductive substrate, the metal bonding layer and the epitaxial structure are sequentially stacked, and the epitaxial structure comprises a first semiconductor layer, a multi-quantum well layer and a second semiconductor layer which are sequentially stacked in the direction away from the metal bonding layer. The through hole penetrates through the first semiconductor layer, the multi-quantum well layer and the second semiconductor layer; the quantum dot structure is filled in the through hole and is in contact with the metal bonding layer; the passivation layer is arranged on the side wall of the through hole and located between the quantum dot structure and the epitaxial structure. The light transmission loss can be reduced, the light conversion efficiency is improved, and the heat dissipation performance and reliability of the chip are improved.

The present invention relates to a coating composition for forming a UV light conversion coating for a photovoltaic cell, a UV light conversion coating prepared therefrom, a method for preparing the UV light conversion coating, and a photovoltaic cell and a photovoltaic module including the coating. The composition includes, by mass: (A) 100 parts of a polyurea precursor resin which is a mixture of a specific aspartate compound and a blocked isocyanate curing agent; (B) 0.5 to 5 parts of a UV light conversion agent; (C) 1 to 5 parts of an adhesion promoter; (D) 10 to 100 parts of an inert diluent. The light conversion coating prepared from the coating composition, when used in a photovoltaic cell or a photovoltaic module, can reduce UV band light transmittance and increase visible light wavelength transmittance, improve light conversion efficiency, and have excellent adhesion and aging resistance.

The invention discloses a light conversion material, an eye-protection screen protection film and a preparation method of the eye-protection screen protection film, and relates to the technical field of nano luminescent materials. The inorganic metal oxide or the inorganic non-metal oxide and the quantum dots are connected through a cross-linking material, and the inorganic metal oxide or the inorganic non-metal oxide is selected from nano silicon oxide, nano aluminum oxide, nano zinc oxide, nano zirconium oxide, nano calcium oxide, nano sodium oxide, nano manganese heptoxide or nano chromium trioxide; the particle size of the inorganic metal oxide or the inorganic non-metal oxide is 2-100 nm; the cross-linking material is selected from a silane coupling agent or a bifunctional ligand. The light conversion material and the eye protection screen protection film provided by the invention can prolong the service life of the nano luminescent material and maintain the stability of the light conversion efficiency of the light conversion material after long-term use.

The present application relates to a light source device, an image projection device, and a display device for improving light conversion efficiency of a wavelength conversion element. The light source device includes a light source; an optical element having a lens array in which a plurality of lenses are arranged in an array on one or both surfaces, and a wavelength conversion element that converts the wavelength of light emitted from the light source and passing through the optical element, the distance P between the vertices of adjacent lenses of the optical element being 1 / 4 or less of the width D of the light beam of light incident on the optical element.

This invention discloses a porous quantum dot color conversion layer, its preparation method, and its application. The method involves mixing a framework polymer, a porous polymer, quantum dots, and a solvent to form a mixed solution. After coating the solution onto a substrate, phase separation induced by solvent evaporation causes the framework polymer to preferentially solidify, forming a continuous phase to embed and fix the quantum dots. Simultaneously, the porous polymer accumulates to form discrete microphase domains. The porous polymer is then removed, transforming the microphase domains into pores, thus obtaining the porous quantum dot color conversion layer. This method is simple, and the resulting color conversion layer possesses high light conversion efficiency, excellent environmental stability, and patternability, making it suitable for display devices.

The invention discloses a method for reducing the polarization loss of a laser, and the method comprises the following steps: arranging a first reflector and an emergent mirror in a resonant cavity, and arranging a polarization element on a light path between the first reflector and the emergent mirror, a quarter-wave plate, a pump light source module and a Q-switching module are arranged on a light path between the polarization element and the first reflecting mirror, the emergent mirror is located on the linearly polarized light emergent side of the polarization element, and a second reflecting mirror is arranged on a reflecting light path of the polarization element. The invention solves the problems of serious polarization loss and low light-to-light conversion efficiency of the resonant cavity of the large-energy laser in the prior art.

The invention relates to a rare earth complex light stabilizer and a preparation method and application thereof, the rare earth complex light stabilizer comprises [Ce (triRNTB) 2] X3 and / or RE (BP) 3, and the rare earth complex light stabilizer comprises 40-100 parts by weight of [Ce (triRNTB) 2] X3 and 0-60 parts by weight of RE (BP) 3. According to the invention, a rare earth complex is introduced into an organic fluorescent dye light conversion system as a novel functional additive. By constructing a light conversion-stabilization bifunctional composite system, the bottleneck of light stability of small molecule dye can be solved, and light conversion efficiency compensation can be realized by utilizing the photoluminescence enhancement effect of the complex. The strategy provides an innovative material design thought for developing a blue light conversion film with long service life and high stability, and has important practical significance for promoting technical upgrading of a light conversion material.

This invention discloses a high-efficiency photoelectric conversion cell (HJT) and its fabrication method, comprising a crystalline silicon substrate; intrinsic amorphous silicon thin films disposed on the front and back sides of the crystalline silicon substrate; a silicon oxide thin film disposed on the outer side of the intrinsic amorphous silicon thin film on the front side; an aluminum oxide thin film disposed on the outer side of the intrinsic amorphous silicon thin film on the back side; and transparent conductive oxide thin films disposed on the outer sides of both the silicon oxide and aluminum oxide thin films. This improves the photoelectric conversion efficiency of the cell.

The present invention discloses an inorganic light-emitting material and a preparation method thereof. The general formula of the light-emitting material provided by the present invention is Zn x Mg 1‑ x AM 10 O 17 :yCr 3+ ; wherein, 0 ≤ x ≤ 1, 0 < y ≤ 0.06; A is selected from one or more of the elements Ca, Sr or Ba; M is selected from one or more of the elements Al, Ga, Sc or Y; in this application, Cr 3+ is a luminescence activation ion. By regulating the matrix elements Zn, Mg, A, and M, the emission is mainly high-efficiency far red light with a peak of about 680 nm to 780 nm. The light-emitting material of the present invention has high light conversion efficiency, good thermal stability and chemical stability, and can be used for plant light supplementation. The far red light emitted by it can optimize the plant morphological structure through light signal regulation, and at the same time improve the light energy utilization efficiency, and is suitable for the light supplementation cultivation of high-value crops.

The invention provides a modified light conversion agent, a light conversion adhesive film composition, a light conversion adhesive film and a photovoltaic module. The structural general formula of the modified light conversion agent is shown as a formula I, wherein n is 2 or 3; r is a plurality of R which exist on the benzene ring where the R is located in a meta-position position relation, and * represents the connection position of the R on the benzene ring where the R is located; according to the modified light conversion agent, through the design of the V-shaped or star-shaped structure, on one hand, the space effect of the modified light conversion agent is improved, the possibility of luminescence quenching caused by molecular accumulation of the modified light conversion agent is reduced, and therefore the light conversion efficiency of the light conversion adhesive film is improved; on the other hand, more substitution sites enable the overall modified light conversion agent to be of a dendritic structure design, so that more possibilities are provided for modification of the modified light conversion agent, and the modified light conversion agent can be more effectively riveted on a light conversion adhesive film by modifying groups capable of being subjected to cross-linking reaction with the light conversion adhesive film on the periphery; further, the migration rate of the modified light conversion agent is reduced.

The invention discloses an 8-hydroxyquinoline / benzophenone type samarium-containing polymer complex light conversion agent as well as a preparation method and application thereof, and belongs to the technical field of organic macromolecular luminescent materials. The molecular general formula of the 8-hydroxyquinoline / benzophenone type samarium-containing polymer complex light conversion agent is Sm (baapn) (hq) (phen) 2-co-A, sm is a Sm < 3 + > central coordination ion; the bp < n > is 2-hydroxy-4-propenyloxy benzophenone, and the bp < n > is 2-hydroxy-4- Hq is 8-hydroxyquinoline; phen is o-phenanthroline; a is an acrylate compound. And the double ultraviolet absorbers can absorb ultraviolet rays of 320-400 nm and 280-320 nm, so that a comprehensive protection effect is achieved. The rare earth samarium can convert ultraviolet rays into visible light which is easier to utilize by plants, promote photosynthesis and improve crop yield. Plants can be protected from being damaged by ultraviolet rays, ultraviolet light unfavorable for plant growth can be converted into red light beneficial to photosynthesis, and the yield and quality of crops are improved; the problems of low compatibility and thermal stability of a micromolecular complex light conversion agent and an agricultural film and limited light conversion efficiency are effectively solved.

This application provides a back-contact photovoltaic cell structure and its fabrication method. By fabricating N-type and P-type doped regions with mutually perpendicular extension directions on an N-type substrate, the relative area of ​​the N-type and P-type doped regions is shortened to the width of the two P-type doped regions on either side, reducing bulk recombination of charge carriers and increasing the open-circuit voltage. A first electrode layer and a second electrode layer are introduced. The first electrode layer connects to the N-type doped region for electron extraction; the second electrode layer crosses the first electrode layer perpendicular to it and connects to the P-type doped region for carrier transport. This application, by having the extension directions of the N-type and P-type doped regions intersect, shortens the relative area of ​​the N-type and P-type doped regions, reduces bulk recombination between accumulated electrons in the N-type doped region and accumulated holes in the P-type doped region, increases the open-circuit voltage, and achieves higher light conversion efficiency.

This invention discloses a multilayered light conversion encapsulating film and a photovoltaic module. The film includes a stacked ultraviolet (UV) light blocking layer and a light conversion layer. The UV light blocking layer comprises a first matrix resin and UV light absorbing functional components dispersed therein, while the light conversion layer comprises a second matrix resin and a light conversion agent dispersed therein. The UV light blocking layer has a transmittance of less than 20% for UV light with wavelengths of 280-330 nm and a transmittance of more than 70% for UV light with wavelengths of 330-380 nm. This invention, through a discrete structural design of the spectrally selective UV light blocking layer and light conversion layer, effectively blocks high-energy UV light to protect the solar cells and encapsulation materials while maintaining high transmittance in the UV light conversion excitation band. This provides sufficient excitation light for the light conversion agent, improves the light conversion efficiency of the film and the initial power output of the photovoltaic module, and enhances its long-term weather resistance and reliability.

The present disclosure describes a method for the formation of mirror micro-structures on radiation-sensing regions of image sensor devices. The method includes forming an opening within a front side surface of a substrate; forming a conformal implant layer on bottom and sidewall surfaces of the opening; growing a first epitaxial layer on the bottom and the sidewall surfaces of the opening; depositing a second epitaxial layer on the first epitaxial layer to fill the opening, where the second epitaxial layer forms a radiation-sensing region. The method further includes depositing a stack on exposed surfaces of the second epitaxial layer, where the stack includes alternating pairs of a high-refractive index material layer and a low-refractive index material layer.

The invention belongs to the technical field of semiconductor photoelectric devices, and discloses a novel LED device based on a perovskite quantum dot and PMMA composite film, and the device sequentially comprises a packaging layer, a perovskite quantum dot-PMMA composite light-emitting layer, a blue light chip, transparent silica gel, symmetrically arranged supports, a metal heat dissipation disc, and symmetrically arranged bonding pads from top to bottom. The perovskite quantum dots are uniformly dispersed and fixedly sealed in the PMMA polymer matrix, so that a compact and stable composite film is formed, and the resistance of the quantum dots to water, oxygen and heat is remarkably improved. And the organic silicon packaging layer with high performance at the top is combined, so that a dual protection mechanism is formed, and the service life of the device is greatly prolonged. The perovskite quantum dot is used as a luminescence center, the narrow emission spectrum (FWHM) of the perovskite quantum dot brings high-color-purity red light emission (the peak value is 619 nm), and the color gamut is wide. The full-quantum-dot light-emitting structure avoids stokes loss of traditional fluorescent powder, and the light conversion efficiency is high.

The present invention relates to a protective composition, a protective layer comprising same, an encapsulated device comprising same, and a method for preparing same. The protective composition of the present invention encapsulates a color conversion layer of an image display device, thereby maintaining light conversion efficiency, improving resistance to moisture and oxygen, and enhancing plasma resistance and thermal stability.

The utility model discloses a back contact battery anti -scratch device, including work table, the top surface of work table is fixedly arranged and is prevented to scratch the layer, and the scratch layer is made of silica gel material. Back contact battery anti -scratch device of the utility model, the top surface of work table is fixedly arranged and is prevented to scratch the layer, and the scratch layer is made of silica gel material, when back contact battery is repaired, the front surface of battery piece is contacted with the scratch layer made of silica gel material, and the scratch layer surface is soft, and the corner also can not scratch the light receiving surface of back contact battery, prevent the light receiving surface of battery piece from scratching, and influence battery piece light conversion efficiency.

This invention provides a 980nm fiber laser based on co-pumping by an oscillator and an amplifier, comprising a pump source, an oscillator, a filter element, and a second ytterbium-doped double-clad fiber. The oscillator includes a high-reflectivity fiber grating, a first ytterbium-doped double-clad fiber, and a low-reflectivity fiber grating. The high-reflectivity fiber grating and the low-reflectivity fiber grating together form a resonant cavity. The first ytterbium-doped double-clad fiber, located within the resonant cavity, receives the pump light and generates 980nm signal light through stimulated emission. By designing an optical path structure for co-pumping by the oscillator and amplifier, and utilizing the filter element to filter out 1030nm light while allowing residual pump light to enter the subsequent amplification stage, the unabsorbed residual pump energy in the oscillator is reused. This significantly simplifies the system size and reduces costs while solving the core problems of severe pump energy waste and low optical-to-optical conversion efficiency in existing technologies.

The invention belongs to the technical field of power systems, and particularly relates to a quantum modified energy storage microsphere working medium turbofan power system and a laser explosion method. Aiming at the pain points of traditional turbofan power fuel oil pollution, low ignition precision and low energy efficiency, quantum modified bio-based solid microspheres with the intrinsic energy density being 7-8 MJ / kg and the diameter being 50 microns serve as a core working medium, and the quantum modified bio-based solid microspheres with the intrinsic energy density being 7-8 MJ / kg and the diameter being 50 microns are subjected to precise high-frequency impact through a 16-path independent VCSEL femtosecond pulse laser array (a VCSEL unit is 100 mW, a subunit is 1.35 W, 16 paths are 472 W, the frequency is 100 Hz, the electro-optical conversion efficiency is larger than or equal to 70%, the pulse width is 100-300 fs, the wavelength is 810 nm, and the focusing power density is 1 * 10 < 9 >-5 * 10 < 9 > W / cm < 2 >); the energy-releasing broken particles, atomized water drops and filtered air form a mixed working medium, and the intelligent control unit and the turbofan mechanism are combined to do work; the power is amplified by 22 times, 1% of the laser power causes a 13N / kW impulse coupling coefficient and 400-1200 s specific impulse, and the system is superior to a fuel oil power system. The technology is novel, low-power input is accumulated into high-power output, carbon emission is low, and the system is suitable for low-altitude economic traffic and high in popularization value.

The present invention relates to a light-converting ink composition comprising light-emitting particles, polymerizable monomers, and an additive having a specific structure, a light-converting layered substrate, a light-converting pixel substrate, and an image display device manufactured using the same, which has improved light-conversion efficiency, has little change in absorbance of blue light and droplet size even when stored at room temperature, and also has excellent light resistance, heat resistance, high-temperature high-humidity stability, viscosity stability, particle size change stability, does not generate foreign matter on the surface, and has excellent inkjet ejection performance and improved nozzle wettability.

The invention discloses an all-solid-state common-cavity double-optical-comb mode-locked laser without cross coupling. The all-solid-state common-cavity double-optical-comb mode-locked laser comprises a pumping source, a beam expanding and collimating system, a birefringent crystal, a dichroscope, a gain crystal, a first output coupling mirror, a second output coupling mirror, a first semiconductor saturable absorption mirror and a second semiconductor saturable absorption mirror. The birefringent crystal is added behind the pump light, the pump light can be directly divided into polarized light in two directions perpendicular to each other, the pump light can be pumped in the two beams of polarized light in the cavity so as to eliminate gain competition between the two beams, operation is easy, and the structure is compact. A confocal cavity type design is adopted, and the gain crystal is placed at the waist position of a laser beam in the cavity, so that pump light at the position can be optimally matched with a laser mode in the cavity, and the power of output laser and the light-to-light conversion efficiency are greatly improved.