中国物理B ›› 2011, Vol. 20 ›› Issue (9): 94211-094211.doi: 10.1088/1674-1056/20/9/094211

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Photoluminescence and persistent luminescence properties of non-doped and Ti4+-doped Mg2SnO4 phosphors

张加驰, 秦青松, 于明汇, 周宏亮, 周美娇   

  1. Key Laboratory for Magnetism and Magnetic Materials, Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2011-03-02 修回日期:2011-04-30 出版日期:2011-09-15 发布日期:2011-09-15

Photoluminescence and persistent luminescence properties of non-doped and Ti4+-doped Mg2SnO4 phosphors

Zhang Jia-Chi(张加驰), Qin Qing-Song(秦青松), Yu Ming-Hui(于明汇), Zhou Hong-Liang(周宏亮), and Zhou Mei-Jiao(周美娇)   

  1. Key Laboratory for Magnetism and Magnetic Materials, Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2011-03-02 Revised:2011-04-30 Online:2011-09-15 Published:2011-09-15

摘要: Mg2SnO4 exhibits green photoluminescence and persistent luminescence, which originate from oxygen vacancies. When Ti4+ ions were doped, an interesting Mg2SnO4:Ti4+ phosphor with bluish white photoluminescence under ultraviolet irradiation and with green persistent luminescence was first obtained. Our investigation reveals that two emission centres exist in Mg2SnO4:Ti4+. The centres responsible for the green emission are considered to be the F centres (oxygen vacancies) and the blue centres are the TiO6 complex. Trap clusters in the band gap with different depths, such as [SnMg—Oi], [SnMg—VO·], [SnMg—VO×] and MgSn, correspond to the components at 85 ℃, 146 ℃ and 213 ℃ of the thermoluminescence curve.

关键词: phosphor, Mg2SnO4, persistent luminescence, photoluminescence

Abstract: Mg2SnO4 exhibits green photoluminescence and persistent luminescence, which originate from oxygen vacancies. When Ti4+ions were doped, an interesting Mg2SnO4:Ti4+ phosphor with bluish white photoluminescence under ultraviolet irradiation and with green persistent luminescence was first obtained. Our investigation reveals that two emission centres exist in Mg2SnO4:Ti4+. The centres responsible for the green emission are considered to be the F centres (oxygen vacancies) and the blue centres are the TiO6 complex. Trap clusters in the band gap with different depths, such as [SnMg—Oi], [SnMg—VO·], [SnMg—VO×] and MgSn, correspond to the components at 85 ℃, 146 ℃ and 213 ℃ of the thermoluminescence curve.

Key words: phosphor, Mg2SnO4, persistent luminescence, photoluminescence

中图分类号:  (Optical materials)

  • 42.70.-a