Luminescence and energy transfer of Sm3+ and Eu3+ in Ca2PO4Cl
作者： Zhijun Wang , Panlai Li , Zhiping Yang , Qinglin Guo
DOI: 10.1016/J.JLUMIN.2014.02.030
关键词: Analytical chemistry 、 Luminescence 、 Mineralogy 、 Materials science 、 Excitation 、 Energy transfer 、 Phosphor 、 Radiation 、 Doping 、 Emission intensity
摘要: Abstract Sm3+, Eu3+, and Sm3+–Eu3+ doped Ca2PO4Cl phosphors are synthesized by a solid-state method. Ca2PO4Cl:Sm3+ can produce red emission under the 400 nm radiation excitation, peak is located at 601 nm, which assigned to 4G5/2→6H7/2 transition of Sm3+. Ca2PO4Cl:Eu3+ create 392 nm strongest 620 nm, attributed 5D0→7F2 Eu3+. The energy transfer from Sm3+ Eu3+ in has been validated critical distance (Rc) calculated be 1.14 nm. With increasing doping concentration, efficiency (Sm3+→Eu3+) gradually increases 53.7%. luminescence property Ca2PO4Cl:Sm3+, tuned properly tuning relative ratio Sm3+–Eu3+, intensity greatly enhanced codoped
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