| Eu3+在Ba2TiSi2O8中的发光 |
| Luminescence of Eu3+ in Ba2TiSi2O8 |
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| 摘要: |
| 关键词: 硅钛酸盐 高温固相扩散法 Eu3+ 发光 荷移跃迁 |
| 基金项目: |
| Abstract: The barium titano-silicate phosphors doped with Eu3+ were synthesized by high temperature solid state reaction. The structures of as-synthesized samples were characterized by powder XRD. The maximum peaks of emission spectra of Ba2TiSi2O8 and Ba2TiSi2O8∶Eu3+ were respectively located at 450 and 618 nm, coming from the transitions of charge-transfer bands of Ti4+-O2- and forced electric-dipole transition 5D0-7F2 of Eu3+. The luminous mechanisms of Ba2TiSi2O8 and Ba2TiSi2O8∶Eu3+ were suggested. The effects of concentration of Eu3+ on the luminous performance of Ba2TiSi2O8∶Eu3+ were also studied and the results showed that the optimum concentration of Eu3+ was 0.12 mol per mole of matrix. |
| Keywords: barium titano-silicate high temperature solid state reaction Eu3+ luminescence charge-transfer |
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| 摘要点击次数: 1352 |
| 全文下载次数: 1996 |
| 万霞,丘尽花,铁绍龙.Eu3+在Ba2TiSi2O8中的发光[J].无机化学学报,2007,23(5):857-861. |
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