Luminescence Properties of Al4B2O9:M (M = Dy3+, Sm3+, and Tb3+)

Abstract

The objective of this study was to investigate the photoluminescence properties of Al₄B₂O₉:M (M = Dy³⁺, Sm³⁺, and Tb³⁺). The solution combustion method was employed to prepare Al₄B₂O₉ doped with M ions. The synthesized aluminum borates were subjected to phase analysis using X-ray diffraction, while their photoluminescence properties were evaluated using a spectrofluorometer. Under excitation at 352 nm, Al₄B₂O₉:Dy³⁺ exhibited emission peaks at 484, 578, and 701 nm. Similarly, when excited at 402 nm, Al₄B₂O₉:Sm³⁺ emitted light at 563, 599, 645, and 702 nm. Finally, upon excitation at 238 nm, Al₄B₂O₉:Tb³⁺ emitted light at 489, 544, 588, and 622 nm.