Luminescence Properties of Thenardite Activated with Dy3+ under Vacuum Ultraviolet Excitation

作者：Yusufu Taximaiti; Abulai Ajimu; Su Zong cai; Sidike Aierken^*

来源：Spectroscopy and Spectral Analysis, 2011, 31(8): 2063-2066.

DOI：10.3964/j.issn.1000-0593(2011)08-2063-04

• Thenardite
• Na2SO4 : Dy3+
• Yellow-blue ratio
• Vacuum ultraviolet-spectroscopy

Na2SO4 : Dy3+ phosphors were prepared by heating pure natural thenardite(Na2SO4) with DyF3 at 900 degrees C for 25 min in air, studied the Luminescence properties of Na2SO4 : Dy3+ were studied by synchrotron radiation. Their photoluminescence (PL) spectra were also investigated under vacuum ultraviolet-ultraviolet (VUV-UV) at room temperature. According to the emission spectra, the yellow-blue ratio (Y/B) is different under different concentrations of Dy3+ and the position of excitation. And the excitation spectrum is consisted of strong bands assigned to the 4f(9)-> 4f(8) is 5d transition at 172 nm, the O2- - Tm3+ charge transfer band at 165 run and weak bands assigned to host absorption(138, 245 nm) and the H-6(15/2)-> D-4(7/2), H-6(15/2)-> P-6(3/2), and H-6(15/2)-> 6P(7/2) transition at 299, 325 and 351 nm respectively.

• 出版日期2011-8
• 单位新疆师范大学