Luminescent and thermometric properties of dual emitting Eu2+/Sm3+co-doped Sr4La(PO4)3O phosphor based on energy transfer

• 作者: Fuwen Liu Degang Deng Ming Wu Bowen Chen Liuyan Zhou Shiqing Xu
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: SPECTROSCOPY,LUMINESCENCE AND PHOSPHORS
• 页码范围: 261-268
• 页数: 8页
• 语种: 英文

摘要

Eu2+/Sm3+ co-doped dual-emitting Sr4La(PO4)3O phosphors were synthesized through a convenient high temperature solid state reaction in reductive atmosphere. The structure, luminescence, energy transfer and temperature-dependent luminescence properties of Eu2+/Sm3+ co-doped Sr4La(PO4)3O phosphors were researched and analyzed in detail. The blue emission of Eu2+ and the red emission of Sm3+can work together as FIR signals. Based on the different response characteristics of these two ion emissions to temperature, Sr4La(PO4)3O:Eu2+/Sm3+ phosphor achieves the relative sensitivity of 0.48384％/K and a wide range of temperature measurements from room temperature to 573 K. The re-sults reveal that the Sr4La(PO4)3O:Eu2+/Sm3+ phosphor has application prospect in the field of high temperature optical thermometry. The energy transfer mechanism is proved to be the dipole-dipole interaction between Eu2+and Sm3+ions.