The effect of PO4 doping on the luminescent properties of Sr3−3zEu2zV2−xPxO8

Abstract The luminescent properties of Sr 3 V 2− x P x O 8 (0 ⩽ x ⩽ 2), Eu 3+ doped Sr 2.7 Eu 0.2 V 2− y P y O 8 (0 ⩽ y ⩽ 2) and Sr 3−3 z Eu 2 z V 0.8 P 1.2 O 8 (0 z ⩽ 0.3) have been investigated. For the Sr 3 V 2− x P x O 8 (0 ⩽ x ⩽ 2) samples, the VO 4 3 - activation and emission intensity reaches the strongest as x = 1.6. For the Sr 2.7 Eu 0.2 V 2− y P y O 8 (0 ⩽ y ⩽ 2) samples, an appropriate amount of phosphorus doping enhances the Eu 3+ emission with the strongest emission occurring at y = 1.2. For the Sr 3−3 z Eu 2 z V 0.8 P 1.2 O 8 (0 z ⩽ 0.3) sample with the phosphorus content fixed at 1.2, it exhibits the most intense emission as Eu 3+ concentration reaches at z = 0.2. Our results indicate that the introduction of the PO 4 3 - plays an important role in the photoluminescence properties of the studied samples and the relevant mechanism has been discussed.