By co-doping the P⁵⁺ ions into Ba₃SiO₅:Eu²⁺, we synthesized new orange persistent phosphor using cellulose assisted liquid phase precursor (LPP) method. The emission spectra showed a typically broad orange emission band centered at 575 nm attributed to the 4f⁶5d¹ → 4f⁷ transition of Eu²⁺ ions under 400 nm excitation source. The persistent luminescence property of Eu²⁺ doped Ba₃SiO₅ orange phosphor was enhanced by co-doping non-equivalent phosphorus ions into silicon sites. This enhancement can be explained by formation of the trapping center due to the charge compenstation. Consequently, the afterglow decay exhibited an orange emission for more than 5 min after irradiation at under 365 nm for 1 min.

通过将P ⁵⁺离子共掺杂到Ba ₃ SiO ₅：Eu ^2+中，我们使用纤维素辅助液相前驱体（LPP）方法合成了新的橙色持久性磷光体。发射光谱显示出典型的宽橙色发射带，中心在575 nm处，这归因于在400 nm激发源下Eu ²⁺离子从4f ⁶ 5d ¹ →4f ⁷跃迁。Eu ²⁺掺杂Ba ₃ SiO ₅的持久发光性能通过将非等价的磷离子共掺杂到硅部位来增强橙色荧光粉。这种增强可以通过由于电荷补偿而形成的俘获中心来解释。因此，在365 nm下照射1分钟后，余辉衰减显示出超过5分钟的橙色发射。