Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups
This article reviews blue shortwave-excited luminescence (BSL) in natural minerals and synthetic materials. It also describes in detail the emission of seven minerals and gems displaying BSL, as well as three references in which BSL is caused by titanate groups (TiO<sub>6</sub>): benitoi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/1/104 |
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| author | Maxence Vigier Emmanuel Fritsch Théo Cavignac Camille Latouche Stéphane Jobic |
| author_facet | Maxence Vigier Emmanuel Fritsch Théo Cavignac Camille Latouche Stéphane Jobic |
| author_sort | Maxence Vigier |
| collection | DOAJ |
| description | This article reviews blue shortwave-excited luminescence (BSL) in natural minerals and synthetic materials. It also describes in detail the emission of seven minerals and gems displaying BSL, as well as three references in which BSL is caused by titanate groups (TiO<sub>6</sub>): benitoite, Ti-doped synthetic sapphire and spinel. Emission (under 254 nm shortwave excitation) and excitation spectra are provided, and fluorescence decay times are measured. It is proposed that BSL in beryl (morganite), dumortierite, hydrozincite, pezzotaite, tourmaline (elbaite), some silicates glasses, and synthetic opals is due to titanate groups present at a concentration of 20 ppmw Ti or above. They all share a broad emission with a maximum between 420 and 480 nm (2.95 to 2.58 eV) (thus perceived as blue), and an excitation spectrum peaking in the short-wave range, between 230 and 290 nm (5.39 to 4.27 eV). Furthermore, their luminescence decay time is about 20 microseconds (from 2 to 40). These three parameters are consistent with a titanate emission, and to our knowledge, no other activator. |
| first_indexed | 2024-03-09T11:37:30Z |
| format | Article |
| id | doaj.art-c4c1ffbc7af24a86849fdaa844883f25 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T11:37:30Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-c4c1ffbc7af24a86849fdaa844883f252023-11-30T23:39:50ZengMDPI AGMinerals2075-163X2023-01-0113110410.3390/min13010104Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate GroupsMaxence Vigier0Emmanuel Fritsch1Théo Cavignac2Camille Latouche3Stéphane Jobic4IMN, Institut des Matériaux de Nantes Jean Rouxel, Centre National de la Recherche Scientifique, Nantes Université, F-44000 Nantes, FranceIMN, Institut des Matériaux de Nantes Jean Rouxel, Centre National de la Recherche Scientifique, Nantes Université, F-44000 Nantes, FranceIMN, Institut des Matériaux de Nantes Jean Rouxel, Centre National de la Recherche Scientifique, Nantes Université, F-44000 Nantes, FranceIMN, Institut des Matériaux de Nantes Jean Rouxel, Centre National de la Recherche Scientifique, Nantes Université, F-44000 Nantes, FranceIMN, Institut des Matériaux de Nantes Jean Rouxel, Centre National de la Recherche Scientifique, Nantes Université, F-44000 Nantes, FranceThis article reviews blue shortwave-excited luminescence (BSL) in natural minerals and synthetic materials. It also describes in detail the emission of seven minerals and gems displaying BSL, as well as three references in which BSL is caused by titanate groups (TiO<sub>6</sub>): benitoite, Ti-doped synthetic sapphire and spinel. Emission (under 254 nm shortwave excitation) and excitation spectra are provided, and fluorescence decay times are measured. It is proposed that BSL in beryl (morganite), dumortierite, hydrozincite, pezzotaite, tourmaline (elbaite), some silicates glasses, and synthetic opals is due to titanate groups present at a concentration of 20 ppmw Ti or above. They all share a broad emission with a maximum between 420 and 480 nm (2.95 to 2.58 eV) (thus perceived as blue), and an excitation spectrum peaking in the short-wave range, between 230 and 290 nm (5.39 to 4.27 eV). Furthermore, their luminescence decay time is about 20 microseconds (from 2 to 40). These three parameters are consistent with a titanate emission, and to our knowledge, no other activator.https://www.mdpi.com/2075-163X/13/1/104luminescencetitanateberylpezzotaitetourmalinesynthetic opal |
| spellingShingle | Maxence Vigier Emmanuel Fritsch Théo Cavignac Camille Latouche Stéphane Jobic Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups Minerals luminescence titanate beryl pezzotaite tourmaline synthetic opal |
| title | Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups |
| title_full | Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups |
| title_fullStr | Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups |
| title_full_unstemmed | Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups |
| title_short | Shortwave UV Blue Luminescence of Some Minerals and Gems Due to Titanate Groups |
| title_sort | shortwave uv blue luminescence of some minerals and gems due to titanate groups |
| topic | luminescence titanate beryl pezzotaite tourmaline synthetic opal |
| url | https://www.mdpi.com/2075-163X/13/1/104 |
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