The riddle of orange–red luminescence in Bismuth-doped silica glasses
Abstract For over the past two decades it has been believed that the intense orange-red photoluminescence in Bismuth-doped materials originates from Bi $$^{2+}$$ 2 + ions. Based on the results from magnetic circular polarization experiments, we demonstrate that this hypothesis fails for Bismuth-dope...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-87290-z |
| _version_ | 1818572912482844672 |
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| author | Oleksii V. Laguta Igor M. Razdobreev |
| author_facet | Oleksii V. Laguta Igor M. Razdobreev |
| author_sort | Oleksii V. Laguta |
| collection | DOAJ |
| description | Abstract For over the past two decades it has been believed that the intense orange-red photoluminescence in Bismuth-doped materials originates from Bi $$^{2+}$$ 2 + ions. Based on the results from magnetic circular polarization experiments, we demonstrate that this hypothesis fails for Bismuth-doped silica glasses. Our findings contradict the generally accepted statement that the orange-red luminescence arises from $$^{2}P_{3/2}(1)$$ 2 P 3 / 2 ( 1 ) $$\rightarrow$$ → $$^{2}P_{1/2}$$ 2 P 1 / 2 transition in a divalent Bismuth ion. The degree of magnetic circular polarization of this luminescence exhibits non-monotonic temperature and field dependencies, as well as sign reversal. This complex behaviour cannot be explained under the assumption of a single Bi $$^{2+}$$ 2 + ion. The detailed analysis enables us to construct a consistent diagram of energy levels involved in the magneto-optical experiments and propose a new interpretation of the nature of orange-red luminescence in Bismuth-doped silica glass. A centre responsible for this notorious photoluminescence must be an even-electron system with an integer total spin, presumably a dimer of Bismuth ions or a complex consisting of Bi $$^{2+}$$ 2 + and an oxygen vacancy. |
| first_indexed | 2024-12-15T00:03:59Z |
| format | Article |
| id | doaj.art-183b1fd66dbd4458a1cd68ee1e4fbd39 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-15T00:03:59Z |
| publishDate | 2021-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-183b1fd66dbd4458a1cd68ee1e4fbd392022-12-21T22:42:48ZengNature PortfolioScientific Reports2045-23222021-04-0111111010.1038/s41598-021-87290-zThe riddle of orange–red luminescence in Bismuth-doped silica glassesOleksii V. Laguta0Igor M. Razdobreev1Central European Institute of Technology, CEITEC BUTUMR 8523 - PHLAM - Physique des Lasers Atomes et Molécules, CERLA, Univ. Lille, CNRSAbstract For over the past two decades it has been believed that the intense orange-red photoluminescence in Bismuth-doped materials originates from Bi $$^{2+}$$ 2 + ions. Based on the results from magnetic circular polarization experiments, we demonstrate that this hypothesis fails for Bismuth-doped silica glasses. Our findings contradict the generally accepted statement that the orange-red luminescence arises from $$^{2}P_{3/2}(1)$$ 2 P 3 / 2 ( 1 ) $$\rightarrow$$ → $$^{2}P_{1/2}$$ 2 P 1 / 2 transition in a divalent Bismuth ion. The degree of magnetic circular polarization of this luminescence exhibits non-monotonic temperature and field dependencies, as well as sign reversal. This complex behaviour cannot be explained under the assumption of a single Bi $$^{2+}$$ 2 + ion. The detailed analysis enables us to construct a consistent diagram of energy levels involved in the magneto-optical experiments and propose a new interpretation of the nature of orange-red luminescence in Bismuth-doped silica glass. A centre responsible for this notorious photoluminescence must be an even-electron system with an integer total spin, presumably a dimer of Bismuth ions or a complex consisting of Bi $$^{2+}$$ 2 + and an oxygen vacancy.https://doi.org/10.1038/s41598-021-87290-z |
| spellingShingle | Oleksii V. Laguta Igor M. Razdobreev The riddle of orange–red luminescence in Bismuth-doped silica glasses Scientific Reports |
| title | The riddle of orange–red luminescence in Bismuth-doped silica glasses |
| title_full | The riddle of orange–red luminescence in Bismuth-doped silica glasses |
| title_fullStr | The riddle of orange–red luminescence in Bismuth-doped silica glasses |
| title_full_unstemmed | The riddle of orange–red luminescence in Bismuth-doped silica glasses |
| title_short | The riddle of orange–red luminescence in Bismuth-doped silica glasses |
| title_sort | riddle of orange red luminescence in bismuth doped silica glasses |
| url | https://doi.org/10.1038/s41598-021-87290-z |
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