Synthesis of new luminescent materials activated with divalent samarium
| Autor: | F. Gaume, J.C. Gacon, A. Gros |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
chemistry.chemical_classification
Chemistry Doping Inorganic chemistry chemistry.chemical_element Phosphor Condensed Matter Physics Electronic Optical and Magnetic Materials Divalent Inorganic Chemistry Samarium Nickel Trifluoride Impurity Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry Luminescence |
| Zdroj: | Journal of Solid State Chemistry. 36:324-330 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/0022-4596(81)90443-6 |
| Popis: | A simple technique for the preparation of powder compounds doped with divalent samarium is described. The reaction is carried out in nickel containers sealed in an inert atmosphere. The samarium impurity is introduced as samarium trifluoride SmF 3 , and metallic samarium powder acts as the reducing agent to change Sm 3+ into Sm 2+ . Using this method, samarium has been stabilized in the divalent state in various fluorides: KMgF 3 , BaLiF 3 , BaY 2 F 8 , and KY 3 F 10 . The resulting compounds show under ultraviolet or visible excitation an intense luminescence in the red region characteristic of Sm 2+ -doped materials. The emission and excitation spectra of these phosphors are presented and briefly discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|