Cesium-zinc halide phosphors, phosphor screens, and preparation methods
US5693254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Jun 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K2004/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Phosphor screens, cesium-zinc halide phosphors, and preparation methods. The phosphor screens comprising a support and a luminescent portion including phosphor comprising oxygen and a combination of species characterized by the relationship: EQU (Cs.sub.1-r Rb.sub.r).sub.3+v-n (Zn.sub.1-m Mg.sub.m).sub.1-o (Li.sub.a Na.sub.b K.sub.c)(Ca.sub.f Sr.sub.g Ba.sub.h)Br.sub.5+v-z-i Cl.sub.z I.sub.i :jA wherein A is selected from the group consisting of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Lu, Sm, Y, Tl, Na, Ag, Cu, Mg, Pb, Bi, Mn, and In, and combinations thereof; r is from 0 to 1; v is from about -0.01 to about +1; n is from 0 to about 1.5; n=a+b+c; m is from 0 to 0.5; o=f+g+h; a is from 0 to 0.3; b is from 0 to 0.75; c is from 0 to 0.75; f is from 0 to 0.25; g is from 0 to 0.5; h is from 0 to 0.5; z+i is from 0 to 5; z is from 0 to 5; i is from 0 to 0.5; and j is from 0 to 0.15.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.