摘要
SrZnO2 : Eu^3 + , Li^+ phosphor powder by long wavelength UV excitation was synthesized by conventional solid-state reaction method. XRD and PL were employed to characterize their properties. The resuits show that Eu^3+ ions preferentially occupy Sr^2+ asymmetry cationic sites, thus emitting 612 nm red light originated from ^5D0 to ^7F2 transition. The luminescent intensity can be greatly enhanced with incorporation of Li^+ ions. The excitation efficiency in range of 350 - 400 nm also increases greatly due to incorporating Li ^+ ions. SrZnO2 : Eu^3 + , Li^+ is a promising redemitting phosphor by long wavelength UV excitation.
SrZnO2 : Eu^3 + , Li^+ phosphor powder by long wavelength UV excitation was synthesized by conventional solid-state reaction method. XRD and PL were employed to characterize their properties. The resuits show that Eu^3+ ions preferentially occupy Sr^2+ asymmetry cationic sites, thus emitting 612 nm red light originated from ^5D0 to ^7F2 transition. The luminescent intensity can be greatly enhanced with incorporation of Li^+ ions. The excitation efficiency in range of 350 - 400 nm also increases greatly due to incorporating Li ^+ ions. SrZnO2 : Eu^3 + , Li^+ is a promising redemitting phosphor by long wavelength UV excitation.