URANIUM-BASED PHOSPHORS AND COMPOSITIONS FOR DISPLAYS AND LIGHTING APPLICATIONS

• Main Authors: BUTTS, Matthew David, SETLUR, Anant A, MURPHY, James E, CAMARDELLO, Samuel Joseph
• Format: Patent
• Language: English; French
• Published: 20.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

A phosphor composition includes an activated uranium-based phosphor having formula I or II. The phosphor is doped with Eu3+ [Ba1-a-bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3 (I) [Ba1-a-bSraCab]p(UO2)q[P,V]rO(2p+2q+5r)/2 (II) where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25, 2.5≤p≤3.5, 1.75≤q≤2.25, and 3.5≤r≤4.5 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. Composition de luminophore comprenant un luminophore à base d'uranium activé ayant la formule I ou II. Le luminophore est dopé avec du Eu3+ [Ba1-a-bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3 (I) [Ba1-a-bSraCab]p(UO2)q[P,V]rO(2p+2q+5r)/2 (II) où 0≤a≤1, 0≤b≤1, 0,75≤x≤1,25, 0,75≤y≤1,25, 0,75≤z≤1,25, 2,5≤p≤3,5, 1,75≤q≤2,25 et 3,5≤r≤4,5 et la formule II exclut la combinaison où a est 0, b est 0, p est 3,5, q est 1,75 et r est 3,5. Des compositions de luminophore comprenant en outre la formule VI ou d'autres matériaux luminescents, tels que des points quantiques, des dispositifs et des afficheurs sont également prévus.