SYNTHESIS AND PHOTOLUMINESCENCE STUDIES OF YTTRIUM ZIRCONATE (YZO) PHOSPHORS POWDERS DOPED WITH BI3+ IONS
In this research work, Yttrium Zirconate (Y2Zr2O7 = YZO) phosphors doped with varying percentages of Bi3+ ions (x = 1.0, 1.5, 2.0, and 2.5) were successfully synthesized using a simple co-precipitation method and subsequently annealed at 1300°C. Through X-ray diffraction, it was determined that the...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Kragujevac
2025-03-01
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| Series: | Proceedings on Engineering Sciences |
| Subjects: | |
| Online Access: | https://pesjournal.net/journal/v7-n1/30.pdf |
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| Summary: | In this research work, Yttrium Zirconate (Y2Zr2O7 = YZO) phosphors doped with varying percentages of Bi3+ ions (x = 1.0, 1.5, 2.0, and 2.5) were successfully synthesized using a simple co-precipitation method and subsequently annealed at 1300°C. Through X-ray diffraction, it was determined that the pure YZO sample had an average crystallite size of 20.63 nm, whereas the Bi3+ doped YZO samples averaged at 18.36 nm. Scanning electron microscopy (SEM) revealed the prepared samples as spherical agglomerates with particle sizes ranging between 110 nm and 120 nm. Exciting the samples at a UV wavelength of 305 nm, the photoluminescence emission spectra displayed a peak at 430 nm (blue), attributed to the 3P1→1S0 transition of Bi3+ ions. Emission intensity decreased beyond a doping concentration of 1.5 at. % Bi3+, indicating a concentration quenching effect, establishing the optimal doping concentration at 1.5 at.%. Additionally, CIE color chromatic parameters were computed for the Bi3+ doped samples, pinpointing the optimized Bi3+ content (1.5 at. %) within the "Cyan" region, showcasing its potential for use in near-ultraviolet (NUV) blue emitting chips for display applications. |
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| ISSN: | 2620-2832 2683-4111 |