Crystallinity and Luminescence of Strontium Aluminates for Digital Optical Data Storage Using NIR Excitation.
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| Title: | Crystallinity and Luminescence of Strontium Aluminates for Digital Optical Data Storage Using NIR Excitation. |
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| Authors: | Yang, Su-Hua1 (AUTHOR) shya@nkust.edu.tw, Wang, Chia-Ho1 (AUTHOR), Ho, Chih-Chieh1 (AUTHOR), Zhan, Kai-Chun1 (AUTHOR) |
| Source: | JOM: The Journal of The Minerals, Metals & Materials Society (TMS). May2024, Vol. 76 Issue 5, p2468-2477. 10p. |
| Subjects: | Data warehousing, Aluminates, Crystallinity, Binding energy, Strontium, Phosphors, Luminescence |
| Abstract: | Stably luminescent strontium aluminates (SAO) co-doped with Eu2+ and Dy3+ were synthesized by a solid-state reaction for digital optical data storage applications. The SAOs were composed of monoclinic SrAl2O4 and hexagonal SrAl12O19 in nearly identical composition ratios. The substitution of Dy3+ for Sr2+ decreased the high binding energy components of Sr 3d and Al 2p while decreasing the phosphor luminescence. However, co-doping with Dy3+ improved the persistent luminescence of Eu2+. When the phosphor was heated to 110°C, the luminescence intensity decreased by only 10.6%. Further, no change in the emission color was noted when the phosphor was placed in water and heated at 50°C for 20 min. The luminescence intensity of the phosphor changed with the switching of the optical stimulation; the higher the switching frequency, the better the optical storage performance. This indicates the promise of the polymorph SAO:Eu2+, Dy3+ for digital optical data storage applications utilizing near-infrared excitation. [ABSTRACT FROM AUTHOR] |
| Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | Stably luminescent strontium aluminates (SAO) co-doped with Eu2+ and Dy3+ were synthesized by a solid-state reaction for digital optical data storage applications. The SAOs were composed of monoclinic SrAl2O4 and hexagonal SrAl12O19 in nearly identical composition ratios. The substitution of Dy3+ for Sr2+ decreased the high binding energy components of Sr 3d and Al 2p while decreasing the phosphor luminescence. However, co-doping with Dy3+ improved the persistent luminescence of Eu2+. When the phosphor was heated to 110°C, the luminescence intensity decreased by only 10.6%. Further, no change in the emission color was noted when the phosphor was placed in water and heated at 50°C for 20 min. The luminescence intensity of the phosphor changed with the switching of the optical stimulation; the higher the switching frequency, the better the optical storage performance. This indicates the promise of the polymorph SAO:Eu2+, Dy3+ for digital optical data storage applications utilizing near-infrared excitation. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 10474838 |
| DOI: | 10.1007/s11837-024-06463-z |
