中国物理B ›› 2020, Vol. 29 ›› Issue (6): 63301-063301.doi: 10.1088/1674-1056/ab821a

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Energy transfer, luminescence properties, and thermal stability of color tunable barium pyrophosphate phosphors

Meng-Jiao Xu(徐梦姣), Su-Xia Li(李素霞), Chen-Chen Ji(季辰辰), Wan-Xia Luo(雒晚霞), Lu-Xiang Wang(王鲁香)   

  1. 1 Key Laboratory of Energy Materials Chemistry of Ministry of Education, Key Laboratory of Advanced Functional Materials of Xingjiang Uygur Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China;
    2 College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
  • 收稿日期:2020-02-15 修回日期:2020-03-09 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: Lu-Xiang Wang E-mail:wangluxiangxju@163.com
  • 基金资助:
    Project supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region, China (Grant No. 2017D01C037).

Energy transfer, luminescence properties, and thermal stability of color tunable barium pyrophosphate phosphors

Meng-Jiao Xu(徐梦姣)1, Su-Xia Li(李素霞)1, Chen-Chen Ji(季辰辰)2, Wan-Xia Luo(雒晚霞)1, Lu-Xiang Wang(王鲁香)1   

  1. 1 Key Laboratory of Energy Materials Chemistry of Ministry of Education, Key Laboratory of Advanced Functional Materials of Xingjiang Uygur Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China;
    2 College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
  • Received:2020-02-15 Revised:2020-03-09 Online:2020-06-05 Published:2020-06-05
  • Contact: Lu-Xiang Wang E-mail:wangluxiangxju@163.com
  • Supported by:
    Project supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region, China (Grant No. 2017D01C037).

摘要: A series of barium pyrophosphate Ba2P2O7 (BPO) phosphors doped with Ce3+ or Tb3+ ions is synthesized via a co-precipitation method under reducing atmosphere. The phase structures, photoluminescence (PL) properties, and thermal stabilities of the samples are characterized by using powder x-ray diffraction (PXRD) and PL spectra. The emission colors of samples can be tuned from blue (0.1544, 0.0310) to green (0.2302, 0.4229) by changing the doping concentrations of Tb3+ under ultraviolet excitation. The energy transfer mechanism between Ce3+ and Tb3+ in the BPO is dipole-dipole interaction with a critical distance of 25.86 Å and an energy transfer efficiency of about 85%, which are determined through the PL spectrum and the decay curve. Moreover, the Ce3+/Tb3+ co-doped sample has good thermal stability for temperature quenching, and the emission intensity at 423 K is maintained at 95% measured at 298 K. The above results show that the BPO:Ce3+, Tb3+ can serve as a promising candidate of green emitting phosphor for solid-state lighting.

关键词: phosphor, photoluminescence, energy transfer, thermal stability

Abstract: A series of barium pyrophosphate Ba2P2O7 (BPO) phosphors doped with Ce3+ or Tb3+ ions is synthesized via a co-precipitation method under reducing atmosphere. The phase structures, photoluminescence (PL) properties, and thermal stabilities of the samples are characterized by using powder x-ray diffraction (PXRD) and PL spectra. The emission colors of samples can be tuned from blue (0.1544, 0.0310) to green (0.2302, 0.4229) by changing the doping concentrations of Tb3+ under ultraviolet excitation. The energy transfer mechanism between Ce3+ and Tb3+ in the BPO is dipole-dipole interaction with a critical distance of 25.86 Å and an energy transfer efficiency of about 85%, which are determined through the PL spectrum and the decay curve. Moreover, the Ce3+/Tb3+ co-doped sample has good thermal stability for temperature quenching, and the emission intensity at 423 K is maintained at 95% measured at 298 K. The above results show that the BPO:Ce3+, Tb3+ can serve as a promising candidate of green emitting phosphor for solid-state lighting.

Key words: phosphor, photoluminescence, energy transfer, thermal stability

中图分类号:  (Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion))

  • 33.50.-j
78.55.-m (Photoluminescence, properties and materials) 65.40.-b (Thermal properties of crystalline solids)