Luminescence properties and energy transfer process of Sm3+–Eu3+ co-doped molybdate red-emitting phosphors by hydrothermal method

• Published in: Applied physics. B, Lasers and optics Vol. 107; no. 1; pp. 177 - 181
• Main Authors: Geng, X.-j., Tian, Y.-w., Chen, Y.-j., Xiao, L.-j., Xie, Y.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.04.2012
• Subjects: Engineering; Lasers; Optical Devices; Optics; Photonics; Physical Chemistry; Physics; Physics and Astronomy; Quantum Optics; Excitation Region; Hydrothermal Method; Energy Transfer Process; Scanning Electron Microscopy Photograph; Color Render Index
• ISSN: 0946-2171; 1432-0649
• DOI: 10.1007/s00340-012-4916-x

Eu 3+ and Sm 3+ co-doped molybdate phosphors have been synthesized via hydrothermal method. The phosphors have the advantages of narrower particle size distribution and regular homogeneous shape. The luminescent properties of the molybdate phosphors were systematically studied. The introduction of Sm 3+ into the red-emitting phosphors can generate a strong excitation line at 405 nm, originating from the 6 H 5/2 → 4 K 11/2 transition of Sm 3+ , significantly extending the excitation region for matching the near-ultraviolet light-emitting diodes (−400 nm). Energy transfer from Sm 3+ to Eu 3+ was observed.