Related Experiment Videos
[Luminescence properties of Ba2MgSi2O7 : RE].
Yan-Ning Shi1, Da-Wei He, Zhong-Yi Liang
1Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|August 4, 2006
Summary
Alkaline earth silicates doped with rare earth elements exhibit efficient luminescence. Energy transfer between Ce3+ and Eu2+ or Tb3+ ions in Ba2MgSi2O7 phosphors is efficient under UV excitation.
Area of Science:
- Materials Science
- Solid-state Chemistry
- Luminescence
Context:
- Alkaline earth silicates are crucial host materials for phosphors.
- Rare earth (RE) elements offer tunable optical properties.
- Solid-state synthesis under reducing atmosphere is key for specific dopant states.
Purpose:
- To synthesize and characterize alkaline earth silicate phosphors (Ba2MgSi2O7 : RE).
- To investigate the luminescence properties of Ce3+, Eu2+, and Tb3+ doped Ba2MgSi2O7.
- To study the energy transfer mechanisms between different rare earth ions.
Summary:
- Ba2MgSi2O7 phosphors doped with Ce3+ emit bluish violet light under UV excitation.
- Eu2+ ions occupy multiple sites in the Ba2MgSi2O7 host, influencing emission spectra.
- Efficient energy transfer occurs from Ce3+ to Eu2+ and from Ce3+ to Tb3+ in the Ba2MgSi2O7 host.
Impact:
- Demonstrates the potential of Ba2MgSi2O7 : RE phosphors for optoelectronic applications.
- Provides insights into energy transfer dynamics in rare earth doped silicates.
- Highlights the role of synthesis atmosphere in achieving desired luminescence properties.