The present invention provides a phosphor composition and light emitting device using the same. The phosphor composition includes a first phosphor and a second phosphor, the second phosphor includes Phellodendron extract, Phellodendron extract emits lights with wavelength from 450 nm to 750 nm as it is excited by lights with wavelength from 300 nm to 480 nm. The LED device using the phosphor composition could emit warm white lights with wavelength from 400 nm to 800 nm.

In a phosphor according to an aspect, an emission site has a perovskite crystal structure expressed by ABX.sub.3, in which A and B are each a cation and X is an anion, and an emission element is located at a B site serving as a body center of the perovskite crystal structure.

A coated phosphor may comprise: phosphor particles comprised of a phosphor with composition (M)(A).sub.2S.sub.4:Eu, wherein: M is at least one of Mg, Ca, Sr and Ba; and A is at least one of Ga, Al, In, Y; a dense impermeable (pinhole-free) coating of an oxide material encapsulating individual ones of the phosphor particles. The coated phosphor is configured to satisfy one or more of the conditions: (1) under excitation by blue light, the reduction in photoluminescent intensity at the peak emission wavelength after 1,000 hours of aging at about 85° C. and about 85% relative humidity is no greater than about 30%; (2) the change in chromaticity coordinates CIE(y), ΔCIE y, after 1,000 hours of aging at about 85° C. and about 85 % relative humidity is less than about 5×10.sup.−3; (3) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least two hours at 85° C.; (4) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least one day at 20° C.; and (5) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least 5 days at 20° C.

A coated phosphor may comprise: phosphor particles comprised of a phosphor with composition (M)(A).sub.2S.sub.4:Eu, wherein: M is at least one of Mg, Ca, Sr and Ba; and A is at least one of Ga, Al, In, Y; a dense impermeable (pinhole-free) coating of an oxide material encapsulating individual ones of the phosphor particles. The coated phosphor is configured to satisfy one or more of the conditions: (1) under excitation by blue light, the reduction in photoluminescent intensity at the peak emission wavelength after 1,000 hours of aging at about 85 C. and about 85% relative humidity is no greater than about 30%; (2) the change in chromaticity coordinates CIE(y), CIE y, after 1,000 hours of aging at about 85 C. and about 85 % relative humidity is less than about 510.sup.3; (3) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least two hours at 85 C.; (4) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least one day at 20 C.; and (5) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least 5 days at 20 C.

A coated phosphor may comprise: phosphor particles comprised of a phosphor with composition (M)(A).sub.2S.sub.4: Eu, wherein: M is at least one of Mg, Ca, Sr and Ba; and A is at least one of Ga, Al, In, Y; a dense impermeable (pinhole-free) coating of an oxide material encapsulating individual ones of the phosphor particles. The coated phosphor is configured to satisfy one or more of the conditions: (1) under excitation by blue light, the reduction in photoluminescent intensity at the peak emission wavelength after 1,000 hours of aging at about 85 C. and about 85% relative humidity is no greater than about 30%; (2) the change in chromaticity coordinates CIE(y), CIE y, after 1,000 hours of aging at about 85 C. and about 85% relative humidity is less than about 510.sup.3; (3) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least two hours at 85 C.; (4) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least one day at 20 C.; and (5) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least 5 days at 20 C.

Proposed is a phosphor capable of effectively inhibiting the occurrence of adverse influence of a sulfur-based gas while improving water resistance of the phosphor and effectively inhibiting the corrosion of a metallic member. A phosphor is proposed, which includes particles or a layer provided on the surface of a sulfur-containing phosphor, which contains sulfur in a host material, and containing a crystalline metal borate containing an IIA-Group element, boron, and oxygen.

In a phosphor according to an aspect, an emission site has a perovskite crystal structure expressed by ABX.sub.3, in which A and B are each a cation and X is an anion, and an emission element is located at a B site serving as a body center of the perovskite crystal structure.

The present invention provides a phosphor composition and light emitting device using the same. The phosphor composition includes a first phosphor and a second phosphor, the second phosphor includes Phellodendron extract, Phellodendron extract emits lights with wavelength from 450 nm to 750 nm as it is excited by lights with wavelength from 300 nm to 480 nm. The LED device using the phosphor composition could emit warm white lights with wavelength from 400 nm to 800 nm.

The invention relates to a mineral wool product comprising mineral fibers that is marked with an UV or IR active substance and can therefore be identified under exposure to suitable radiation.

A coated phosphor may comprise: phosphor particles comprised of a phosphor with composition (M)(A).sub.2S.sub.4: Eu, wherein: M is at least one of Mg, Ca, Sr and Ba; and A is at least one of Ga, Al, In, Y; a dense impermeable (pinhole-free) coating of an oxide material encapsulating individual ones of the phosphor particles. The coated phosphor is configured to satisfy one or more of the conditions: (1) under excitation by blue light, the reduction in photoluminescent intensity at the peak emission wavelength after 1,000 hours of aging at about 85 C. and about 85% relative humidity is no greater than about 30%; (2) the change in chromaticity coordinates CIE(y), CIE y, after 1,000 hours of aging at about 85 C. and about 85% relative humidity is less than about 510.sup.3; (3) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least two hours at 85 C.; (4) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least one day at 20 C.; and (5) said coated phosphor does not turn black when suspended in a 1 mol/L silver nitrate solution for at least 5 days at 20 C.