Passivation of metal halide scintillators
US9328287B2 · kind B2 · utility
3Cited by
1References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 13, 2014 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Jul 5, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7733
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A halide material, such as scintillator crystals of LaBr3:Ce and SrI2:Eu, with a passivation surface layer is disclosed. The surface layer comprises one or more halides of lower water solubility than the scintillator crystal that the surface layer covers. A method for making such a material is also disclosed. In certain aspects of the disclosure, a passivation layer is formed on a surface of a halide material such as a scintillator crystal of LaBr3:Ce of SrI2:Eu by fluorinating the surface with a fluorinating agent, such as F2 for LaBr3:Ce and HF for SrI2:Eu.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.