Luminescence in the system Al2O3-B2O3

Luminescence in the system Al2O3-B2O3

•Combustion synthesis of phosphors in Al2O3-B2O3 system reported.•Al4B2O9, Al5BO9 and Al18B4O33 were successfully prepared.•Luminescence of Ce3+ and Cr3+ observed in as-combusted powders.•Characteristic luminescence in form of narrow R lines of Cr3+ was observed in Al5BO9 and Al18B4O33. [Display omi...

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Veröffentlicht in:Journal of alloys and compounds 2021-11, Vol.883, p.160846, Article 160846
Hauptverfasser: Revankar, S.G., Gedekar, K.A., Puppulwar, S.P., Wankhede, S.P., Belsare, P.D., Moharil, S.V.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum oxide
Borate
Boron oxides
Ce3
Cerium
Combustion synthesis
Cr3
Luminescence
Phosphor
Photoluminescence
Trivalent chromium
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Zusammenfassung:•Combustion synthesis of phosphors in Al2O3-B2O3 system reported.•Al4B2O9, Al5BO9 and Al18B4O33 were successfully prepared.•Luminescence of Ce3+ and Cr3+ observed in as-combusted powders.•Characteristic luminescence in form of narrow R lines of Cr3+ was observed in Al5BO9 and Al18B4O33. [Display omitted] Three compounds in the system Al2O3-B2O3, viz. Al4B2O9, Al5BO9 and Al18B4O33 were successfully prepared by facile combustion synthesis. Activation by 3d transition element Cr3+ and 4f lanthanide Ce3+ was attempted. Characteristic luminescence in form of narrow R lines of Cr3+ was observed in Al5BO9 and Al18B4O33. Interaction of Cr3+ with the surrounding was represented by the Racah parameters. Broad band emission of Ce3+ arising from allowed d-f transitions in near ultraviolet (nUV) region in all 3 compounds is reported for the first time.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.160846