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EnglishSodium-zinc-aluminosilicate (NaZAS) glasses doped with single or multiple rare earth ions (Ce 3+, Tb 3+, Sm 3+) were synthesized, and their characteristics investigated by m-line spectroscopy, absorption and luminescence spectroscopy, and micro-Raman spectroscopy. Blue-white light, with x = 0.24 and y = 0.24 CIE chromaticity coordinates, was obtained for the Tb 3+ singly-doped glass excited at 351 nm. In NaZAS glasses co-doped with Ce 3+ and Tb 3+ it was possible to observe a non-radiative energy transfer from Ce 3+ to Tb 3+ ions upon 320 nm excitation; the Ce 3+→Tb 3+ energy transfer microscopic parameter and efficiency were obtained from the analysis of the cerium emission decay curve. Different concentrations of Ce 3+ and Tb 3+ ions in the same glass host give rise to blue and blue-green emissions, with different CIE coordinates. Optical waveguides were also produced in the samples by means of Ag +-Na + ion exchange process, and characterized. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
| Titolo: | Soda-zinc-aluminosilicate glasses doped with Tb 3+, Ce 3+, and Sm 3+ for frequency conversion and white light generation |
| Autori: | |
| Data di pubblicazione: | 2011 |
| Rivista: | |
| Abstract: | Sodium-zinc-aluminosilicate (NaZAS) glasses doped with single or multiple rare earth ions (Ce 3+, Tb 3+, Sm 3+) were synthesized, and their characteristics investigated by m-line spectroscopy, absorption and luminescence spectroscopy, and micro-Raman spectroscopy. Blue-white light, with x = 0.24 and y = 0.24 CIE chromaticity coordinates, was obtained for the Tb 3+ singly-doped glass excited at 351 nm. In NaZAS glasses co-doped with Ce 3+ and Tb 3+ it was possible to observe a non-radiative energy transfer from Ce 3+ to Tb 3+ ions upon 320 nm excitation; the Ce 3+→Tb 3+ energy transfer microscopic parameter and efficiency were obtained from the analysis of the cerium emission decay curve. Different concentrations of Ce 3+ and Tb 3+ ions in the same glass host give rise to blue and blue-green emissions, with different CIE coordinates. Optical waveguides were also produced in the samples by means of Ag +-Na + ion exchange process, and characterized. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE). |
| Handle: | http://hdl.handle.net/11562/741765 |
| ISBN: | 9780819485854 |
| Appare nelle tipologie: | 04.01 Contributo in atti di convegno |
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