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Meejitpaisan P, Doddoji R, Luewarasirikul N, Kim H, Kothan S, Kaewkhao J. Radioluminescence characteristics of Eu2O3 ions activated CaO/CaF2+La2O3 +P2O5 scintillating glasses. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Kuwik M, Kowalska K, Pisarska J, Pisarski WA. Spectroscopic Properties of Pr 3+, Tm 3+, and Ho 3+ in Germanate-Based Glass Systems Modified by TiO 2. MATERIALS (BASEL, SWITZERLAND) 2022; 16:61. [PMID: 36614399 PMCID: PMC9821467 DOI: 10.3390/ma16010061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/10/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
In this paper, the effect of the GeO2:TiO2 molar ratio in glass composition on the spectroscopic properties of germanate glasses was systematically investigated. The visible luminescence bands associated with characteristic 1D2 → 3H4 (red), 5S2, 5F4 → 5I8 (green), and 1D2 → 3F4 (blue) transitions of Pr3+, Ho3+, and Tm3+ ions in systems modified by TiO2 were well observed, respectively. It was found that the luminescence intensity of glasses containing Pr3+ and Ho3+ ions increases, whereas, for Tm3+-doped systems, luminescence quenching with increasing content of TiO2 was observed. Based on Commission Internationale de I'Eclairage (CIE) chromaticity coordinates (x, y) analysis, it was demonstrated that the value of chromaticity coordinates for all glasses depends on the GeO2:TiO2 molar ratio. The addition of TiO2 to system compositions doped with Tm3+ ions shifts the (x, y) to the center of the CIE diagram. However, chromaticity coordinates evaluated for glasses containing Pr3+ ions move to a purer red color. Our results confirm that the spectroscopic properties of the studied glasses strongly depend on TiO2 content. Moreover, it can be stated that germanate-based glass systems modified by TiO2 can be used for optoelectronics in RGB technology as red (Pr3+), green (Ho3+), and blue (Tm3+) emitters.
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Pisarski WA. Judd-Ofelt Analysis and Emission Properties of Dy 3+ Ions in Borogermanate Glasses. MATERIALS (BASEL, SWITZERLAND) 2022; 15:9042. [PMID: 36556847 PMCID: PMC9785102 DOI: 10.3390/ma15249042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/03/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Borogermanate glasses singly doped with Dy3+ ions were synthesized and then studied using the absorption and luminescence spectra. Spectroscopic changes of Dy3+ ions have been examined for compositional-dependent glasses with various molar ratios GeO2:B2O3. In this work, several spectroscopic parameters of Dy3+ ions were obtained experimentally and compared to the calculated values from the Judd-Ofelt theory. Luminescence spectra measured for borogermanate glasses consist of blue, yellow and red bands, which correspond to 4F9/2 → 6H15/2, 4F9/2 → 6H13/2 and 4F9/2 → 6H11/2 transitions of Dy3+, respectively. Luminescence lifetimes for the 4F9/2 excited state are reduced, whereas the stimulated emission cross-sections for the most intense 4F9/2 → 6H13/2 yellow transition of Dy3+ increase with increasing GeO2 and decreasing B2O3 concentrations in glass-hosts. Quantum efficiency of the 4F9/2 (Dy3+) excited state is nearly independent on molar ratios GeO2:B2O3. Attractive spectroscopic properties related to the 4F9/2 → 6H13/2 transition of Dy3+ ions are found for borogermanate glasses implying their potential utility for yellow laser action and solid-state lighting technology.
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Affiliation(s)
- Wojciech A Pisarski
- Institute of Chemistry, University of Silesia, Szkolna 9 Street, 40-007 Katowice, Poland
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Pisarski WA. Rare Earth Doped Glasses/Ceramics: Synthesis, Structure, Properties and Their Optical Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8099. [PMID: 36431585 PMCID: PMC9698667 DOI: 10.3390/ma15228099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Glasses, glass-ceramics and ceramics belong to three important classes of engineering materials, which are useful in numerous multifunctional and industrial applications [...].
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Affiliation(s)
- Wojciech A Pisarski
- Institute of Chemistry, University of Silesia, Szkolna 9 Street, 40-007 Katowice, Poland
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Damdee B, Kirdsiri K, Kim H, Yamanoi K, Wongdamnern N, Kidkhunthod P, Rajaramakrishna R, Kaewkhao J. Physical and photoluminescence investigations of Eu3+ doped gadolinium borate scintillating glass. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lesniak M, Zeid J, Starzyk B, Kochanowicz M, Kuwik M, Zmojda J, Miluski P, Baranowska A, Dorosz J, Pisarski W, Pisarska J, Dorosz D. Investigation of the TeO 2/GeO 2 Ratio on the Spectroscopic Properties of Eu 3+-Doped Oxide Glasses for Optical Fiber Application. MATERIALS (BASEL, SWITZERLAND) 2021; 15:117. [PMID: 35009261 PMCID: PMC8745866 DOI: 10.3390/ma15010117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/02/2021] [Accepted: 12/17/2021] [Indexed: 11/26/2022]
Abstract
This study presented an analysis of the TeO2/GeO2 molar ratio in an oxide glass system. A family of melt-quenched glasses with the range of 0-35 mol% of GeO2 has been characterized by using DSC, Raman, MIR, refractive index, PLE, PL spectra, and time-resolved spectral measurements. The increase in the content of germanium oxide caused an increase in the transition temperature but a decrease in the refractive index. The photoluminescence spectra of europium ions were examined under the excitation of 465 nm, corresponding to 7F0 → 5D2 transition. The PSB (phonon sidebands) analysis was carried out to determine the phonon energy of the glass hosts. It was reported that the red (5D0 → 7F2) to orange (5D0 → 7F1) fluorescence intensity ratio for Eu3+ ions decreased from 4.49 (Te0Ge) to 3.33 (Te15Ge) and showed a constant increase from 4.58 (Te20Ge) to 4.88 (Te35Ge). These optical features were explained in structural studies, especially changes in the coordination of [4]Ge to [6]Ge. The most extended lifetime was reported for the Eu3+ doped glass with the highest content of GeO2. This glass was successfully used for the drawing of optical fiber.
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Affiliation(s)
- Magdalena Lesniak
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Av. A. Mickiewicza 30, 30-059 Krakow, Poland; (J.Z.); (B.S.); (D.D.)
| | - Jakub Zeid
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Av. A. Mickiewicza 30, 30-059 Krakow, Poland; (J.Z.); (B.S.); (D.D.)
| | - Bartłomiej Starzyk
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Av. A. Mickiewicza 30, 30-059 Krakow, Poland; (J.Z.); (B.S.); (D.D.)
| | - Marcin Kochanowicz
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (M.K.); (J.Z.); (P.M.); (J.D.)
| | - Marta Kuwik
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland; (M.K.); (W.P.); (J.P.)
| | - Jacek Zmojda
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (M.K.); (J.Z.); (P.M.); (J.D.)
| | - Piotr Miluski
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (M.K.); (J.Z.); (P.M.); (J.D.)
| | - Agata Baranowska
- Faculty of Mechanical Engineering, Bialystok University of Technology, 45C Wiejska Street, 15-351 Bialystok, Poland;
| | - Jan Dorosz
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (M.K.); (J.Z.); (P.M.); (J.D.)
| | - Wojciech Pisarski
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland; (M.K.); (W.P.); (J.P.)
| | - Joanna Pisarska
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland; (M.K.); (W.P.); (J.P.)
| | - Dominik Dorosz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Av. A. Mickiewicza 30, 30-059 Krakow, Poland; (J.Z.); (B.S.); (D.D.)
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Transition Metals (Cr 3+) and Lanthanides (Eu 3+) in Inorganic Glasses with Extremely Different Glass-Formers B 2O 3 and GeO 2. MATERIALS 2021; 14:ma14237156. [PMID: 34885309 PMCID: PMC8658304 DOI: 10.3390/ma14237156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/08/2021] [Accepted: 11/19/2021] [Indexed: 11/16/2022]
Abstract
Glasses containing two different network-forming components and doped with optically active ions exhibit interesting properties. In this work, glass systems based on germanium dioxide and boron trioxide singly doped with lanthanides (Eu3+) and transition metals (Cr3+) ions are research subjects. Optical spectroscopy was the major research tool used to record excitation and emission spectra in a wide spectral range for studied systems. The emitted radiation of glasses doped with Cr3+ ions is dominated by broadband luminescence centered at 770 nm and 1050 nm (4T2 → 4A2). Interestingly, the increase of concentration of one of the oxides contributed to the detectable changes of the R-line (2E → 4A2) of Cr3+ ions. Moreover, EPR spectroscopy confirmed the paramagnetic properties of the obtained glasses. The influence of molar ratio GeO2:B2O3 on spectroscopic properties for Eu3+ ions is discussed. The intensity of luminescence bands due to transitions of trivalent europium ions as well as the ratio R/O decrease with the increase of B2O3. On the other hand, the increase in concentration B2O3 influences the increasing tendency of luminescence lifetimes for the 5D0 state of Eu3+ ions. The results will contribute to a better understanding of the role of the glass host and thus the prospects for new optical materials.
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