Loading...
Please wait, while we are loading the content...
Similar Documents
The Effect of Fluorides $(BaF_{2}$, $MgF_{2}$, $AlF_{3}$) on Structural and Luminescent Properties of $Er^{3+}$-Doped Gallo-Germanate Glass
| Content Provider | MDPI |
|---|---|
| Author | Magdalena, Leśniak Tomasz, Ragiń Jacek, Żmojda Mach, Gabriela Starzyk, Bartłomiej Sadowska, Karolina Kochanowicz, Marcin Kuwik, Marta Miluski, Piotr Jimenez, Gloria Lesly Baranowska, Agata Dorosz, Jan Pisarski, Wojciech Pisarska, Joanna Olejniczak, Zbigniew Dorosz, Dominik |
| Copyright Year | 2022 |
| Description | The effect of $BaF_{2}$, $MgF_{2}$, and $AlF_{3}$ on the structural and luminescent properties of gallo-germanate glass (BGG) doped with erbium ions was investigated. A detailed analysis of infrared and Raman spectra shows that the local environment of erbium ions in the glass was influenced mainly by $[GeO]_{4}$ and $[GeO]_{6}$ units. Moreover, the highest number of non-bridging oxygens was found in the network of the BGG glass modified by $MgF_{2}$. The$ ^{27}$Al MAS NMR spectrum of BGG glass with $AlF_{3}$ suggests the presence of aluminum in tetra-, penta-, and octahedral coordination geometry. Therefore, the probability of the$ $^{4}I_{13/2}→^{4}$I_{15/2}$ transition of $Er^{3+}$ ions increases in the BGG + $MgF_{2}$ glass system. On the other hand, the luminescence spectra showed that the fluoride modifiers lead to an enhancement in the emission of each analyzed transition when different excitation sources are employed (808 nm and 980 nm). The analysis of energy transfer mechanisms shows that the fluoride compounds promote the emission intensity in different channels. These results represent a strong base for designing glasses with unique luminescent properties. |
| Starting Page | 5230 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma15155230 |
| Journal | Materials |
| Issue Number | 15 |
| Volume Number | 15 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-07-28 |
| Access Restriction | Open |
| Subject Keyword | Materials Spectroscopy Heavy Metal Oxide Glasses Gallo-germanate Glass Baf2 Mgf2 Alf3 Dsc Thermal Stability Structure Raman 27al Mas Nmr Spectrum Luminescence Properties Erbium Ions Wide Emission |
| Content Type | Text |
| Resource Type | Article |
