Hydrothermal synthesis and luminescence behavior of rare-earth-doped NaLa(WO{sub 4}){sub 2} powders
- Institute of Inorganic Materials, Department of Materials Science and Engineering, Zhejiang University, No. 38, Zheda Road, Hangzhou City, Zhejiang province 310027 (China)
NaLa(WO{sub 4}){sub 2} powders doped with Eu{sup 3+}, Nd{sup 3+}, and Er{sup 3+} have been synthesized by a mild hydrothermal method and a crystal of exclusive scheelite phase could be obtained at low temperature. From the spectrum of Eu{sup 3+} it has been concluded that the dopant Eu{sup 3+} ion occupies a La{sup 3+} site and mainly takes the site with C{sub 2} symmetry. The higher quenching concentration can be observed in the Eu{sup 3+}-doped NaLa(WO{sub 4}){sub 2} powders. The Er{sup 3+}- and Nd{sup 3+}-doped NaLa(WO{sub 4}){sub 2} powders exhibit luminescence in the near infrared (Er{sup 3+} at 1550nm, and Nd{sup 3+} at 1060nm). The transition mechanism of the up-conversion luminescence of the Er{sup 3+}-doped NaLa(WO{sub 4}){sub 2} powders can be ascribed to two photons absorption process.
- OSTI ID:
- 20725841
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 3 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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