78 results about "Near ultraviolet" patented technology

The present invention discloses a device for detecting the radiation intensity of an ultraviolet lamp, which relates to the technical field of ultraviolet lamp radiation detection. The key technical solutions include: a housing, characterized in that: a detection chamber is provided within the housing, and a rotating mechanism for fixing the ultraviolet lamp is provided within the detection chamber; a photometric measuring platform is further provided on the exterior of the housing, with the measuring end of the photometric measuring platform close to the ultraviolet lamp; the rotating mechanism includes two conductive slip rings, a rotating rod, multiple fixing plates, and multiple lamp fixing slots; the two conductive slip rings are fixedly connected to the top and bottom of the detection chamber, respectively; the top and bottom of the rotating rod are fixedly connected to the output ends of the two conductive slip rings, respectively; and the ends of the multiple fixing plates are fixedly connected to the side walls of the rotating rod. This detection device solves the problem of inspectors being directly exposed to the ultraviolet environment. At the same time, the detection mechanism can simultaneously detect multiple ultraviolet lamps, thereby improving detection efficiency.

The application discloses a chain-like core-shell structure crystal and a preparation method and application thereof, the crystal is chloroethyl HDABCO-sodium bromofluoroborate, a structural formula of the crystal is [CH2ClCH2N(CH2CH2)3NH]4·[(Na6Br)(BF4) 13 ], a molecular structure presents a one-dimensional chain framework with infinite extension, adjacent chains are connected through N-H...F linear hydrogen bonds and chloroethyl-HDABCO, so that the compound has polarity and has a mid-infrared second-order nonlinear effect. In addition, the ultraviolet band edge absorption of the material is close to the near ultraviolet region, so that the material is expected to be close to inorganic ultraviolet nonlinear optical materials. The crystal is obtained through room temperature volatilization crystallization, has good thermal stability, and has potential application values in the fields of laser frequency doubling conversion, electro-optic modulators, deep ultraviolet nonlinear optics and shutter used for high-speed photography.

The invention relates to scheelite matrix non-rare earth activated dark red fluorescent powder. The composition of the material is M3A2 (W, Mo) (1-x-y) O9: xMn < 4 + >, yBi < 3 + >, in the formula, M is any one of alkaline earth metals Ca, Sr and Ba; a is any one of Y, Gd and La; 0 lt; 0 < = y < = 1%. The dark red fluorescent powder provided by the invention is stable in matrix structure and performance, relatively good in physical and chemical stability, stable in luminescence performance, firm and uniform in particle, and relatively high in crystallinity and purity. A tungsten molybdate solid solution is used as a matrix, Mn < 4 + > is used as a luminescence center, Bi < 3 + > is used as a sensitizer, the raw materials are easy to obtain and non-toxic, and the prepared product can effectively absorb near ultraviolet light in the range of 300-400 nm and emit dark red light in the range of 650-700 nm, and has a certain beneficial effect of supplementing red light in the field of current white light LEDs and plant illumination LEDs.

LED devices and methods of operating them are described. An LED lighting device includes a substrate (702), a white LED (402) on the substrate at a location configured for alignment with an optical axis of an automotive lamp when installed, and a near ultraviolet LED (404) on the substrate at a location spaced apart from the white LED by an amount such that the near ultraviolet LED is defocused from the optical axis of the automotive lamp when installed such that the near ultraviolet LED emits energy in the near ultraviolet band in a larger area than the white LED when powered on.

The invention discloses a spiral chiral gold nanorod as well as a preparation method and application thereof, and the method comprises the following steps: (1) sequentially adding hexadecyl trimethyl ammonium bromide, cysteine and p-aminothiophenol into an anisotropic gold nanorod solution, uniformly mixing, and adsorbing; and (2) silver nitrate, chloroauric acid and ascorbic acid are added for a reaction, centrifugal dispersion is performed after the reaction is finished, and the spiral chiral gold nanorod is obtained. Dispersing the spiral chiral gold nanorod in an aqueous solution, adding phenylalanine enantiomer, dropwise adding on a clean glass slide after incubation is finished, and performing surface enhanced Raman spectroscopy test by using a Raman microscope after air drying. According to the invention, the broadband coverage of chiral response from visible light to near ultraviolet region is realized by accurately regulating and controlling the arrangement of interface molecules and the morphology of the nano structure.

The invention provides a yellow fluorescent material capable of being excited by near ultraviolet light and visible light and a preparation method of the yellow fluorescent material, the method comprises the following steps: providing raw materials which comprise the following components in parts by weight: 0.3524 to 0.3564 part of K2CO3, 0.7012 to 0.7386 part of SrCO3, 0.5250 to 0.5368 part of Y2O3, 2.1586 to 2.1596 part of MoO3 and 0.0466 to 0.0839 part of Dy2O3, and uniformly mixing the components; heating the raw materials to a preset temperature, and keeping the temperature; and cooling to obtain the yellow fluorescent material capable of being excited by near ultraviolet light and visible light. The method is simple to operate, a fluxing agent does not need to be additionally added, the excitation wavelength required by the prepared fluorescent powder is located in the near ultraviolet-visible light wave band, the half-peak width of emitted light is narrow, and the color purity is high.

The invention relates to the technical field of luminescent materials, in particular to a red fluorescent material, a preparation method and application thereof, a lower transfer layer and preparation of the lower transfer layer, the red fluorescent material has a chemical formula of K < 0.5 > La < 0.5 > Sr Mg < 1-x > (W < 1-y > Tey) < 1-z > O6: zMn < 4 + >, xLu < 3 + >, wherein 0 lt; x is less than or equal to 0.1, 0lt; y is less than or equal to 0.5, 0lt; and z < = 0.05. The material can be excited by visible light and near ultraviolet in sunlight and can emit red light at the same time, namely sunlight in the wavelength range of 300-600 nm is converted into dark red light in the wavelength range of 600-800 nm, the problem that a silicon-based solar cell is poor in short-wavelength photoelectric conversion efficiency is solved, and the photoelectric conversion efficiency of the silicon-based solar cell is improved.

The purpose of the present invention is to provide an optical glass which is suitable for molding by reheating treatment and has excellent internal transmittance in a near ultraviolet region, i.e., a wavelength of 320-400 nm. The technical problem is solved by an optical glass which contains, in terms of cation% (mol%), 40.0-70.0% of Si < 4 + >, more than 0% and 20.0% or less of B < 3 + >, more than 0% and 20.0% or less of Pb < 2 + >, and 5.0-20.0% of K < + >, the total content of R < n + > being 15.0-35.0% (R < n + >: one or more elements selected from the group consisting of Li < + >, Na < + >, and K < + >), and in terms of anion% (mol%), the total content of R < n + > is 5.0-35.0% (R < n + >: one or more elements selected from the group consisting of Li < + >, Na < + >, and K < + >). F-is contained in an amount of more than 0% but not more than 20.0%.

A dual game dice game system includes a dual game dice game table having a layout configured to enable a player to personally become a thrower of a game dice on the dual game dice game table. The dual game dice game system further includes one or more player consoles, each player console configured to accommodate a player, each player controller configured to enable a player to select a dual game dice game played on a layout of the dual game dice game table; one or more near ultraviolet cameras positioned to view the game dice above the layout; one or more near ultraviolet lamps that irradiate the game dice on the layout and output optical data; and a computing device that receives and analyzes the optical data and determines the outcome of the game dice.

Illustrative embodiments of the invention generally relate to photovoltaics and solar energy harvesting devices and, particularly, to those that are transparent or semi-transparent, allowing sufficient visible light through them to allow visualization of objects through them, and more particularly, to those that supplement their primary near ultraviolet light absorption with secondary and / or tertiary absorptions of narrow bands of visible light while maintaining their transparency. Various embodiments of the invention relate to single solar materials with both primary ultraviolet absorption and secondary, narrow-band visible absorption, while some embodiments of the invention utilize mixtures of one or more materials to realize a primary ultraviolet absorption of light with secondary, or even tertiary, narrow bands of visible light absorption. Means of manufacturing such photovoltaics and solar energy harvesting devices will also be disclosed as well as the applications and uses thereof.

The invention discloses a polypeptide nanoring material and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: co-assembling poly (gamma-benzyl ester-L-glutamic acid) (PBLG) and achiral triphenylamine derivatives {N, N-bis (2-methylphenyl) aniline (MTPA), 4-(5-aldehyde-2, 2 ': 5', 2 ''-terthienyl)-N, N-bis (2-methylphenyl) aniline (MTTH) or 4-[5-(2, 2-dicyanovinyl) thiophene-2-yl]-N, N-bis (2-methylphenyl) aniline (MTTV)} to obtain the poly (gamma-benzyl ester-L-glutamic acid)-N, N-bis (2-methylphenyl) aniline derivative. According to the present invention, the emission of multi-color circularly polarized light (CPL) (near ultraviolet to deep red light, 370-660 nm) is achieved, and the maximum luminescence asymmetry factor (glum) is up to 1.1 * 10 <-2 >, and is improved by more than 30% compared with the prior art. Meanwhile, the generation inhibition rate of reactive oxygen species (ROS) is increased to 98% or above through a compact nanostructure of the material, the problem of phototoxicity of traditional triphenylamine derivatives is solved, and the material is suitable for high-resolution biological imaging and targeted diagnosis and treatment.

The invention relates to the technical field of optoelectronic materials, in particular to a single-matrix triple-doped white fluorescent material and a preparation method thereof, the chemical composition expression of the single-matrix triple-doped white fluorescent material is M1-x-y-zAl2O4: xCe < 3 + >, yTb < 3 + > and zMn < 2 + >, three ions of Mn < 2 + >, Ce < 3 + > and Tb < 3 + > are jointly doped into an MAl2O4 (M = Mg, Ca, Sr and Ba) aluminate matrix, the doping concentrations of Ce < 3 + >, Tb < 3 + > and Mn < 2 + > are accurately regulated and controlled (0.005-0.03, 0.02-0.1 and 0.01-0.1 respectively), and the single-matrix triple-doped white fluorescent material is obtained. According to the method, Mn < 2 + > occupies specific sites in a matrix crystal structure, the peak value of an emission spectrum of the Mn < 2 + > is accurately regulated and controlled at a red light wave band of 620-700nm, and meanwhile, a three-doped system capable of realizing efficient energy cascade transfer in a single matrix is successfully constructed by virtue of efficient absorption of Ce < 3 + > on 350-420nm near ultraviolet light, energy transfer from Ce < 3 + > to Tb < 3 + > and final energy transfer from Tb < 3 + > to Mn < 2 + >. Therefore, the fundamental technical obstacle that in the prior art, it is difficult to achieve efficient synergistic luminescence in a single matrix through multi-ion combination is solved.

The invention belongs to the technical field of semiconductor material detection, and particularly discloses a method and system for representing nitrogen doping concentration uniformity of a silicon carbide wafer, and the method comprises the steps: carrying out the polishing and surface cleaning treatment of the silicon carbide wafer to be detected, and enabling the surface roughness and thickness change of the silicon carbide wafer to meet the set requirements; and acquiring a near ultraviolet photoluminescence channel image on the surface of the silicon carbide wafer to be detected, and judging whether the nitrogen doping concentration of the silicon carbide wafer is uniform or not according to the mapping intensity of the near ultraviolet photoluminescence channel image. The method has high sensitivity in the aspect of non-uniformity detection of the nitrogen doping concentration in the local tiny area of the silicon carbide wafer.

The invention relates to an ultraviolet-blue light filtering type conjugated organic chromophore as well as a preparation method and application thereof, the ultraviolet-blue light filtering type conjugated organic chromophore provided by the invention is prepared by taking benzothiadiazole as a core, fusing heterocyclic ring units on two sides and introducing an aldehyde group (CHO) substituent, can be dissolved in organic solvents such as chloroform and chlorobenzene, and has excellent film-forming property. The material has strong absorption in the wave band of 350-550 nm, the maximum absorption peak is at the position of 460 nm, and the blue light hazard wave band can be accurately covered. When the material is applied to a semitransparent organic solar cell, the color rendering index (CRI) reaches 92 or above, and the material is responsive to 300-400 nm near ultraviolet light. The material can be widely applied to photoelectron protection materials, display device coatings and eye protection products, and the problems that an existing material excessively absorbs red light and is low in CRI are solved.

The invention belongs to the technical field of luminescent materials and solid-state lighting, and particularly discloses Ba2AlLaO5: Eu < 3 + > red-light fluorescent powder and a preparation method thereof. The fluorescent powder can be effectively excited in a near ultraviolet / purple light wave band to generate red light for emission, and belongs to transition from 5D0 to 7FJ (J = 0-4) of Eu < 3 + >; gd < 3 + > does not directly emit light, but can sensitize Eu < 3 + > through non-radiative energy transfer, so that the emission intensity of red light (702 nm) is enhanced. The fluorescent powder has the advantages of being stable in structure, capable of being matched with a near ultraviolet / purple light LED chip, strong in dark red emission and the like, and is suitable for the fields of solid-state illumination, display and the like.

The invention discloses near ultraviolet excited niobium-based garnet broadband near-infrared fluorescent powder, which is characterized in that the chemical composition expression formula of the fluorescent powder is LuCa2Ga4-xNbO12: xCr < 3 + >, x is the substitution amount of Cr, and x is more than or equal to 0 and less than 1. The fluorescent powder can be excited by 250-700nm near ultraviolet-visible light, the emission peak covers 600nm-850nm, the near infrared luminous intensity of the fluorescent powder under the excitation of near ultraviolet light is far higher than the luminous intensity of the fluorescent powder under the excitation of blue light, the near ultraviolet excitation peak intensity is far higher than the blue light excitation peak intensity, and the fluorescent powder can be used for preparing the fluorescent powder. The fluorescence lifetime under near ultraviolet excitation is longer than the fluorescence lifetime under blue light excitation, and the material can be used in the fields of medical imaging, key information identification, plant growth illumination and the like, and can be used as a near-infrared light conversion material excited by near ultraviolet and blue light LED chips.

Illustrative embodiments of the invention generally relate to photovoltaics and solar energy harvesting devices and, particularly, to those that are transparent or semi-transparent, allowing sufficient visible light through them to allow visualization of objects through them, and more particularly, to those that supplement their primary near ultraviolet light absorption with secondary and / or tertiary absorptions of narrow bands of visible light while maintaining their transparency. Various embodiments of the invention relate to single solar materials with both primary ultraviolet absorption and secondary, narrow-band visible absorption, while some embodiments of the invention utilize mixtures of one or more materials to realize a primary ultraviolet absorption of light with secondary, or even tertiary, narrow bands of visible light absorption. Means of manufacturing such photovoltaics and solar energy harvesting devices will also be disclosed as well as the applications and uses thereof.

The invention discloses a preparation method of a fluorescent temperature measurement material with high sensitivity, the fluorescent temperature measurement material has the following general formula: A4B2M1-xO6F: xMn < 4 + >, where A metal is one or more of elements Na, Li and K; the metal B is one or more of Mg, Zn and Ca; m metal is one or two of elements Nb and Sb; and the doping amount x of Mn < 4 + > is greater than or equal to 0.05 mol% and less than or equal to 1mol%. The material can be effectively excited by near ultraviolet or visible light, and is high in color purity, good in luminescence detectability, simple in preparation process operation, low in raw material and equipment cost, environment-friendly, stable in product chemical property and suitable for general popularization and application.

The application discloses a kind of by multi-phase Eu 2+ And charge compensation agent doped blue cyan fluorescent powder and its preparation method, belong to fluorescent powder technical field, by multi-phase Eu 2+ And charge compensation agent doped blue cyan fluorescent powder molar ratio general formula is: KAlSi3O8:3mol%Eu 2+ :Xmol%M + , and 1.0≤x≤11.0, wherein M + It is selected from Li + , Na + , Rb + , Cs + Four charge compensation ions, and the ionic radius of M + With K + There is controllable difference.Benefiting from the unique structural design, the prepared fluorescent powder can emit adjustable strong blue cyan light under near ultraviolet-blue light excitation, and the luminescence thermal quenching performance, quantum efficiency and spectral stability are all significantly improved.The fluorescent powder is applied to white light LED device packaging, and the efficient and wide-spectrum blue cyan emission and cyan spectral component can be used.Only by matching with a blue light chip and a single yellow / red fluorescent powder, high-quality full-spectrum white light with high color rendering index can be realized under the conditions of simplifying packaging process and reducing cost, and the fluorescent powder shows important application prospects in the fields of healthy lighting, high-end display and precise spectral design.

The invention discloses an ultraviolet laser generating device which comprises an intermediate infrared laser generating system, a near ultraviolet laser generating system and a sum frequency crystal. The mid-infrared laser generating system comprises a first pumping source, a first focusing coupling system and a first laser resonant cavity; the near ultraviolet laser generation system comprises a second pumping source, a second focusing coupling system and a second laser resonant cavity; the mid-infrared and near-ultraviolet dual-wavelength laser is adopted to perform sum frequency in the sum frequency crystal, so that the deep ultraviolet laser can be efficiently obtained.

The invention discloses a method for synthesizing a platinum nanoparticle and graphene quantum dot composite nanomaterial through photo-reduction and application of the platinum nanoparticle and graphene quantum dot composite nanomaterial, and belongs to the field of biomedical materials. The preparation method of the composite nano material comprises the following steps: obtaining graphene quantum dots; a raw material containing the graphene quantum dots and a platinum source is subjected to in-situ photo-reduction to obtain the platinum particle / graphene quantum dot composite nanomaterial. The mixing ratio of the graphene quantum dots to the platinum source to the hole sacrificial agent is (1-1.5) g: (0.35-0.45) g: (15-25) mL. The in-situ photoreduction temperature is-16 DEG C to-10 DEG C, the illumination time is 1.5-2.5 h, a light source is selected from xenon lamp near ultraviolet light, and the wavelength is 300-400 nm. The platinum nanoparticle / graphene quantum dot material with high solubility can be synthesized on a gram level by a simple, high-dose and green photoreduction method, and can be used in anti-tumor treatment.

The invention discloses a multi-spectral mobile phone flash lamp based on Micro LEDs, which belongs to the field of optical devices of mobile communication equipment, and comprises a vertically stacked RGB Micro LED array, and the chip size is 5 * 5 mu m < 2 > to 10 * 10 mu m < 2 >; the NUV (near ultraviolet) Micro LED array is transversely distributed, and the wavelength range of the NUV Micro LED array is 370 to 410 nm; the period of the nano lens array is 1-3 microns, and the nano lens array is used for mixing spectrums and controlling the divergence angle of emergent light to be smaller than or equal to 15 degrees The time division multiplexing driving circuit supports independent current modulation of RGB and NUV channels; the RGB Micro LED adopts an InGaN / GaN multi-quantum well structure, and the NUV Micro LED adopts an AlGaN / GaN superlattice structure; the nano lens array is formed on the SiO2 layer through a nano imprinting technology; according to the invention, the technical bottleneck of a traditional flash lamp is solved by setting a multispectral Micro LED array, a dynamic driving circuit and an intelligent scene adaptation algorithm, the flash lamp can be widely applied to scenes such as AR / VR, portrait photography and low-light shooting, the flash lamp has the advantages of high performance and low power consumption, and the flash lamp adapts to the integration requirements of mobile terminals such as mobile phones.

Illustrative embodiments of the invention generally relate to photovoltaics and solar energy harvesting devices and, particularly, to those that are transparent or semi-transparent, allowing sufficient visible light through them to allow visualization of objects through them, and more particularly, to those that supplement their primary near ultraviolet light absorption with secondary and / or tertiary absorptions of narrow bands of visible light while maintaining their transparency. Various embodiments of the invention relate to single solar materials with both primary ultraviolet absorption and secondary, narrow-band visible absorption, while some embodiments of the invention utilize mixtures of one or more materials to realize a primary ultraviolet absorption of light with secondary, or even tertiary, narrow bands of visible light absorption. Means of manufacturing such photovoltaics and solar energy harvesting devices will also be disclosed as well as the applications and uses thereof.

The invention discloses yttrium-magnesium-gallium-aluminum-germanium garnet-based red-light fluorescent powder and a preparation method thereof. The chemical composition expression formula of the yttrium magnesium gallium aluminum germanium garnet-based red light fluorescent powder is Y (3-x) MgGa2AlGeO12: xEu < 3 + >, and x is more than or equal to 0.01 and less than or equal to 0.667. The yttrium magnesium gallium aluminum germanium garnet-based red light fluorescent powder provided by the invention can be excited by 225-300nm ultraviolet light and 375-400nm near ultraviolet light, multimodal narrow-band fluorescence emission covering a 585-600nm orange red light region, a 605-630nm positive red light region and a 690-715nm deep red light region is obtained, and the chromaticity coordinate is positioned at (0.6326, 0.3669). Due to the fact that balanced fluorescence emission of a plurality of narrow-band peaks can be achieved in a 585-600 nm orange red light area, a 605-630 nm positive red light area and a 690-715 nm dark red light area, the fluorescent powder is suitable for being applied to optical light source devices such as healthy lighting, plant lighting and temperature detection.

The invention provides fluorescent powder with high thermal stability and strong far-red light emission and a preparation method thereof, and belongs to the technical field of inorganic luminescent materials, the structural formula is CaLu1-xAlO4: xEu < 3 + >, x is 0.15-0.45, and the preparation method comprises the following steps: weighing raw materials CaCO3, Eu2O3, Al2O3 and Lu2O3 according to an element molar ratio, adding absolute ethyl alcohol, stirring to obtain a dispersion liquid, standing until a supernatant and a precipitate are obviously layered, drying, and grinding to obtain the fluorescent powder with high thermal stability and strong far-red light emission. And putting the round cake into a high-temperature muffle furnace, raising the temperature to 1450-1500 DEG C, and sintering for more than 15 hours. The fluorescent powder can emit high-intensity red light and far-red light under excitation of near ultraviolet light, has the optimal emission intensity especially when x is 0.25, has excellent thermal stability within the temperature range of 300-500K, is beneficial to improving the reliability of a device and prolonging the service life of the device, and can be applied to the growth process of plants.

The invention discloses a diazo naphthoquinone type photoinitiator with a polypyrrole unit, and belongs to the field of near ultraviolet photoinitiators. According to the present invention, the polypyrrole unit-diazo naphthoquinone type photoinitiator is synthesized through the simple and efficient method, the ultraviolet visible absorption peak value of the photoinitiator is 355-450 nm, the half peak width is about 50-58 nm, the near ultraviolet absorption requirement is completely met, and the near ultraviolet light initiator can initiate the monomer polymerization under the near ultraviolet light irradiation so as to be used as the photocuring material.

A multi-emission double perovskite fluorescent powder belongs to the technical field of luminescent materials, the fluorescent powder takes Cs2NaScCl6 as a matrix, Ag < + > and Bi < 3 + > are added as sensitizers, Sb < 3 + >, Mn < 2 + > and Yb < 3 + > are taken as active ions, the composition of the fluorescent powder is Cs2Na0. 8Ag0. 2Sc (0.98-x-y-z) Bi < 0.02 > Cl6: xSb < 3 + >, yMn < 2 + > and zYb < 3 + >, in the formula, 0 lt; xlt; 1.5%, 0 < y < lt; 5%, 0 < zlt; and 10%. The Cs2Na0. 8Ag0. 2Sc (0.98-x-y-z) Bi0. 02Cl6: xSb < 3 + >, yMn < 2 + > and zYb < 3 + > prepared by the preparation method disclosed by the invention has the advantages of good crystallinity, high purity, uniform morphology, good luminescence characteristic and physical and chemical stability, can effectively absorb near ultraviolet light in a range of 200-400nm, and can be simultaneously applied to full-spectrum warm white light LED (Light Emitting Diode) illumination and near-infrared night vision detection systems excited by a current near ultraviolet chip.

The invention provides near-infrared fluorescent powder, a preparation method thereof and a luminescent material. The chemical formula of the near-infrared fluorescent powder is Bi < 3-x > Ln < x > B < 1-y > Sb < 2 > CryO < 11 >, wherein 0 lt; x is less than or equal to 1, 0lt; y is less than or equal to 0.10, Ln comprises any one or a combination of at least two of Nd, Er or Yb, and B is a trivalent doped metal element. Yb < 3 + >, Nd < 3 + > and Er < 3 + > with efficient near-infrared light-emitting energy levels in trivalent rare earth ions Ln < 3 + > are utilized, energy transfer from Cr < 3 + > to Ln < 3 + > is designed, the near-infrared fluorescent powder capable of emitting in multiple wavebands in a near-infrared region is obtained in a garnet type matrix, the emission range is expanded, the emission band is widened, and the emission efficiency is improved. The near-infrared fluorescent powder realizes broadband absorption in near ultraviolet light and blue light ranges and multiband emission in a near-infrared light region, and has high luminous efficiency and good thermal stability.

An amine compound according to the present invention has a benzazole ring structure represented by general formula (a). The amine compound exhibits excellent stability and durability in thin films, and can provide, through optimization of the molecular design, a material in which the refractive index of visible light is high and the extinction coefficient of light near ultraviolet light is high. By using the compound in a material constituting a capping layer, an organic EL element that has excellent luminous efficiency can be obtained. R1-R4 each represent H, an aryl group, or a heteroaryl group, where at least one of these represents an aryl group or a heteroaryl group. L1-L3 each represent a divalent group such as a phenylene group, X1-X3 each represent O or S, and Y1 and Y2 each represent N or a methine group.

Illustrative embodiments of the present invention generally relate to photovoltaic and solar energy collection devices, and in particular to transparent or translucent photovoltaic and solar energy collection devices, allowing sufficient visible light to pass therethrough to allow objects to be visible therethrough, the present invention relates to devices, and more particularly to photovoltaic and solar energy collecting devices that complement their primary near ultraviolet light absorption while maintaining their transparency with secondary and / or tertiary absorption of narrowband visible light. Various embodiments of the present invention relate to a single solar material having both primary ultraviolet absorption and secondary narrowband visible light absorption, while some embodiments of the present invention utilize a mixture of one or more materials to achieve primary ultraviolet absorption of light as well as secondary or even tertiary narrowband of visible light absorption. Means for manufacturing such photovoltaic and solar energy collection devices and uses and uses thereof will also be disclosed.