Phosphors, and radiation detectors and X-ray CT unit made by using the same
US6458295B1 · kind B1 · utility
10Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Jun 26, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/764
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A novel phosphor represented by the general formula(Gd1−xCex)3Al5−yGayO12(wherein x and y are values falling in the ranges of 0.0005≦x≦0.02, and 0<y<5.) was provided. The phosphor has a high luminous efficiency when Al and Ga are coexistent in the Gd-system phosphor. In particular, the phosphor with the Ga content (y) in the range of 2-3 has a luminous efficiency of twice the conventional phosphor. A radiation detector using this phosphor as ceramic scintillator is capable of obtaining a high luminous output and a very small afterglow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.