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The Na2 SO4 : Tm3+ phosphor was synthesized by the high temperature solid state reaction method in air. The crystalline structure was examined by X-ray diffraction (XRD). Narrow bands observed in emission spectra were well identified with the electronic transitions within the 4f12 configurations of Tm3+, and the excitation spectrum is consisted of strong bands assigned to the 4f12 --> 4f11 5d transition at 183 nm, the O(2-)-Tm3+ charge transfer band at 170 nm and weak bands assigned to host absorption (130, 223 and 258 nm). In addition, the authors also found that the content of Tm3+ in the 8-16 mg concentration range caused quenching.


Taximaiti Yusufu, Ajimu Abulai, Keyoumu Niyazi, Zong-Cai Su, Aierken Sidike. Luminescence properties of thenardite activated with Tm3+ under vacuum ultraviolet excitation]. Guang pu xue yu guang pu fen xi = Guang pu. 2011 Feb;31(2):349-52

PMID: 21510378

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