Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 108, Issue 3, Pages 569-576Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-012-6928-0
Keywords
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Funding
- Northwest University
- National Natural Science Foundation of China [50802031]
- Ph.D. Programs Foundation of the Ministry of Education of China [20070487076]
- Natural Science Foundation of Hubei Province [2010CDB01607]
- Foundation of Shaanxi Educational Committee [11JK0528]
- Korea Research Foundation
- Korean Government [2010-0022540]
- National Core Research Center from MEST
- National Core Research Center from NRF [2010-0001-226]
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Structural and spectroscopic characterizations of the Ce3+/Tb3+(Mn2+) solely and Ce3+-Tb3+(Mn2+) doubly doped phosphate compound Ca9ZnLi(PO4)(7) with beta-Ca-3(PO4)(2) structure have been performed by powder X-ray diffraction and photoluminescence spectra measurements. The weak green emission from Tb3+ and red emission from Mn2+ are significantly enhanced by introduction of sensitizer Ce3+ ions due to an efficient resonant-type energy transfer from Ce3+ to activators Tb3+ or Mn2+. The energy transfer efficiency and the mechanism have been estimated based on spectroscopic data. Meanwhile, the critical distances for energy transfer between the Ce3+ and Tb3+ or Mn2+ ions are also calculated by the method of spectral overlapping.
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