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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. [ABSTRACT FROM AUTHOR]