A device including an LED light source optically coupled to a phosphor material including a green-emitting phosphor selected from the group consisting of compositions of (A1)-(A70), and combinations thereof.

A device including an LED light source optically coupled to a phosphor material including a green-emitting phosphor selected from the group consisting of compositions (A1)-(A62) and combinations thereof.

The present invention discloses one or more compounds that oscillate between a first state and a second state due to absorption of high energy, with the oscillations facilitating prevention of solarization of a glass system for reuse while generating scintillations for determining existence of high radiation energy. The generation of scintillations have a duration that is commensurate with a duration of the irradiation of the glass system, and cease when irradiation is ceased without affecting the glass system.

Provided are light-emitting nanoparticles that exhibit light emission stability and light resistance, and are less biologically toxic. The light-emitting nanoparticles contain a matrix material and a light-emitting substance included in the matrix material, wherein the matrix material contains a cationic element that is at least one member selected from the group consisting of Ti, Si, Ca, Al and Zr, and an anionic element that is at least one member selected from the group consisting of O and P; and the concentration of the light-emitting substance in the matrix material is set to a level that results in an average distance of 1.2 nm or more between pieces of the light-emitting substance.

A phosphor composition includes an activated uranium-based phosphor having formula I or II. The phosphor is doped with Eu.sup.3+
[Ba.sub.1abSr.sub.aCa.sub.b].sub.x[Mg,Zn].sub.y(UO.sub.2).sub.z([P,V]O.sub.4).sub.2(x+y+z)/3(I)
[Ba.sub.1abSr.sub.aCa.sub.b].sub.p(UO.sub.2).sub.q[P,V].sub.rO.sub.(2p+2q+5r)/2(II) where 0a1, 0b1, 0.75x1.25, 0.75y1.25, 0.75z1.25, 2.5p3.5, 1.75q2.25, and 3.5r4.5 and formula II excludes the combination where a is 0, b is 0, p is 3.5, q is 1.75, and r is 3.5. Phosphor compositions further including formula VI or other luminescent materials, such as quantum dots, devices and displays are also provided.

Green-emitting phosphors are useful in devices including an LED light source radiationally coupled and/or optically coupled to the phosphors, which are selected from [Ba.sub.1abSr.sub.aCa.sub.b].sub.x[Mg,Zn].sub.y(UO.sub.2).sub.z([P,V]O.sub.4).sub.2(x+y+z)/3, where 0a1, 0b1, 0.75x1.25, 0.75y1.25, 0.75z1.25; and [Ba,Sr,Ca,Mg,Zn].sub.p(UO.sub.2).sub.q[P,V].sub.rO.sub.(2p+2q+5r)/2, where 2.5p3.5, 1.75q2.25, 3.5r4.5.

A phosphor composition includes an activated uranium-based phosphor having formula I or II. The phosphor is doped with Eu.sup.3+

[Ba.sub.1abSr.sub.aCa.sub.b].sub.x[Mg,Zn].sub.y(UO.sub.2).sub.z([P,V]O.sub.4).sub.2(x+y+z)/3(I)

[Ba.sub.1abSr.sub.aCa.sub.b].sub.p(UO.sub.2).sub.q[P,V].sub.rO.sub.(2p+2q+5r)/2(II)

where 0a1, 0b1, 0.75x1.25, 0.75y1.25, 0.75z1.25, 2.5p3.5, 1.75q2.25, and 3.5r4.5 and formula II excludes the combination where a is 0, b is 0, p is 3.5, q is 1.75, and r is 3.5. Phosphor compositions further including formula VI or other luminescent materials, such as quantum dots, devices and displays are also provided.

Green-emitting phosphors are useful in devices including an LED light source radiationally coupled and/or optically coupled to the phosphors, which are selected from [Ba.sub.1-a-bSr.sub.aCab].sub.x[Mg,Zn].sub.y(UO.sub.2).sub.z[P,V]O.sub.4).sub.2(x+y+z)/3, where 0a1, 0b1, 0.75x1.25, 0.75y1.25, 0.75z1.25; and [Ba,Sr,Ca,Mg,Zn].sub.p(UO.sub.2).sub.q[P,V].sub.rO.sub.(2p+2q+5r)/2, where 2.5p3.5, 1.75q2.25, 3.5r4.5.

The present invention discloses one or more compounds that oscillate between a first state and a second state due to absorption of high energy, with the oscillations facilitating prevention of solarization of a glass system for reuse while generating scintillations for determining existence of high radiation energy. The generation of scintillations have a duration that is commensurate with a duration of the irradiation of the glass system, and cease when irradiation is ceased without affecting the glass system.

A uranium-based phosphor selected from (i) phosphors having formula I or II:

##STR00001##

where the phosphor having formula I or II is doped with an activator ion including Pr.sup.3+, Sm.sup.3+, or mixtures thereof, where 0a1, 0b1, 0.75x1.25, 0.75y1.25, 0.75z1.25, 2.5p3.5, 1.75q2.25, and 3.5r4.5; (ii) a phosphor having formula I or II, where the phosphor having formula I or II is doped with an activator ion selected from Eu.sup.3+, Pr.sup.3+, Sm.sup.3+, and mixtures thereof; and a counter ion comprising one or more alkali metal ions; and (iii) phosphors having formula III

##STR00002##

where the phosphors having formula III are doped with an activator ion selected from: Eu.sup.3+, Pr.sup.3+, Sm.sup.3+, and mixtures thereof, where A is Li, Na, K, Rb, Cs, or a combination thereof.