Novel photoluminescent materials based on gallium silicate inorganic polymer hosts activated with Sm3+ or Eu3+
| Autor: | John V. Hanna, Gregory J. Rees, Kenneth J. D. MacKenzie, William J. Trompetter, Joanne J. Rogers |
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| Rok vydání: | 2017 |
| Předmět: |
Inorganic polymer
Photoluminescence Materials science Ion exchange Inorganic chemistry chemistry.chemical_element Phosphor 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Silicate 0104 chemical sciences Electronic Optical and Magnetic Materials Amorphous solid chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Materials Chemistry Ceramics and Composites Gallium 0210 nano-technology |
| Zdroj: | Journal of Non-Crystalline Solids. 460:98-105 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2017.01.002 |
| Popis: | Novel photoluminescent materials were prepared by ion exchange of a potassium gallium silicate inorganic polymer host with Sm 3 + and Eu 3 + . The host materials and phosphors were characterised by XRD, 71 Ga and 29 Si MAS NMR, PIXE, XPS, and photoluminescence spectroscopy. The phosphors exhibited the characteristic 4f-4f emission peaks of Sm 3 + and Eu 3 + ions, and also broad blue and green emission bands associated with the inorganic polymer host. The rare earth photoluminescence intensity of the Sm 3 + - and Eu 3 + - exchanged potassium gallium silicate inorganic polymers could be considerably enhanced by heat treatment in air at 1000 °C. The heated materials consisted of a mixture of crystalline β-Ga 2 O 3 and remaining amorphous gallium silicate inorganic polymer phase with an increased silica content. |
| Databáze: | OpenAIRE |
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