3269 results about "Photoluminescence" patented technology

A photoluminescent capsule illuminator for a sighting device. The photoluminescent illuminator includes an elongated phosphor housing having sidewalls and a base. The photoluminescent illuminator includes phosphors in a granular form disposed inside the phosphor housing. The photoluminescent illuminator includes a cap sealing the phosphors in the phosphor housing. The phosphor housing is disposed in relation to a body of the sighting device such that photoluminescent light emitted from the phosphors exits the phosphor housing and identifies a location of a sight on the sighting device.

The invention relates to a perovskite / polymer composite luminescent material and a preparation method thereof, which belong to the technical field of composite materials and luminescent materials, wherein the structural formula of the perovskite is R1NH3AB3 or (R2NH3)2AB4, A and B form a ligand octahedral structure, R1NH3 or R2NH3 are filled into gaps of the ligand octahedral structure which is formed through the A and the B, R1 is methyl, R2 is a long-chain organic molecular group, the A is any one of metal Ge, Sn, Pb, Cu, Mn, Sb and Bi, the B is any one of Cl, Br and I. The perovskite / polymer composite luminescent material which is made through the preparation method is high in luminescent intensity, high in luminescent color purity, excellent in light and thermal stability and excellent chemical resistant property and mechanical property, and lays the foundation for theory research and application of the perovskite / polymer composite luminescent material in high-performance photoluminescence devices, flexible display, lasers, nonlinear optical devices. The preparation method can obtain composite materials which can cover a whole visible region through luminescent wavelengths, and has wide application prospect in the fields of wide gamut light emitting diode (LED) and high performance displays and the like.

A nanocrystal capable of light emission includes a nanoparticle having photoluminescence having quantum yields of greater than 30%.

A device for supporting chromophore elements suitable for emitting fluorescence in response to light excitation, the device comprising a substrate having a surface layer carrying the chromophore elements, forming a planar waveguide, and containing photoluminescent constituents which emit guided luminescence at the excitation wavelength(s) of the chromophore elements when they are excited by primary excitation light illuminating the surface layer. The invention is particularly applicable to biochip type devices.

A solar cell is disclosed to include a single crystal silicon chip, an electrode system, a glass plate cover, a polymer film set between the single crystal silicon chip and the glass plate cover, and a spectrum converter containing an inorganic phosphor, which absorbs radiation in purple, blue and green light of the Sun's solar radiation and converts the absorption into a photoluminescent light in yellow, orange-yellow and infrared area in the electromagnetic spectrum. The architecture characteristic of the solar cell increases the efficiency by about 20%.