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Novel Dy3+-doped GdPO4 white light phosphors with monoclinic system were successfully synthesised by hydrothermal method at 240 ℃. This paper investigates the luminescence properties of white-light Gd1-xPO4 : xDy3+ under vacuum ultraviolet (VUV) excitation. The strong absorption at around 147 nm in excitation spectrum energy can be transferred to the energy levels of Dy3+ ion from the host absorption. Additionally, this white light phosphors are activated by a single Dy3+ ion and with a lower preparation temperature, which tend to decrease the consumption of rare earth resource and energy. Therefore, the luminescence of Gd1-xPO4 : xDy3+ under VUV excitation is effective, and proves to be promising in application to mercury-free lamp.
Novel Dy3 + -doped GdPO4 white light phosphors with monoclinic system were successfully synthesized by hydrothermal method at 240 ° C. This paper investigates the luminescence properties of white-light Gd1-xPO4: xDy3 + under vacuum ultraviolet (VUV) excitation. The strong absorption at around 147 nm in excitation spectrum energy can be transferred to the energy levels of Dy3 + ion from the host absorption. This white light phosphors are activated by a single Dy3 + ion and with a lower preparation temperature, which tend to decrease the consumption of rare earth resource and energy. Thus, the luminescence of Gd1-xPO4: xDy3 + under VUV excitation is effective, and proves to be promising in mercury-free lamp.