title: Enhanced orange-red emission of SrZn2(PO4)2:Sm3+ via codoping Eu2+ as a sensitizer.
abstract: A series of Eu(2+)-, Sm(3+)- and Eu(2+)/Sm(3+)-doped SrZn2(PO4)2 samples were synthesized using a solid-state reaction. SrZn2(PO4)2:Eu(2+) presented a broad emission band due to 4f(6) 5d-4f(7) transition of the Eu(2+) ion. The spectra of SrZn2(PO4)2:Sm sintered in air and H2 /N2 were identical in every aspect, except for a very small difference in intensity. A Eu(2+)- Sm(3+) energy transfer scheme was proposed to realize the sensitization of Sm(3+) ion emission by Eu(2+) ions, and UV-convertible Sm(3+)-activated red phosphor was obtained in SrZn2(PO4)2:Eu(2+), Sm(3+).
authors: School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, 100044, China.|College of Physics Science & Technology, Hebei University, Baoding, 071002, China.
authors: Zhijun
authors: Z
authors: Wang
authors: School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, 100044, China.
authors: Shuqin
authors: S
authors: Lou
authors: College of Physics Science & Technology, Hebei University, Baoding, 071002, China.
authors: Panlai
authors: P
authors: Li
mesh_terms: D004735:Energy Transfer; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D010710:Phosphates / Q000737:chemistry*; D012493:Samarium / Q000737:chemistry*; D013324:Strontium / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D010710:Phosphates; D012493:Samarium; D005063:Europium; D015032:Zinc; D013324:Strontium
keywords: luminescence; phosphors