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Cyclic MAM Synthesis of CaMoO4:Er3+/Yb3+ Particles and their Upconversion Photoluminescence Properties

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Abstract:

Er3+ doped CaMoO4(CaMoO4:Er3+) and Er3+/Yb3+ co-doped CaMoO4 (CaMoO4:Er3+/Yb3+) particles was successfully synthesized by a cyclic microwave-assisted metathetic (MAM) method, followed by heat-treatment. Well-crystallized UC CaMoO4:Er3+/Yb3+ particles formed after heat-treatment at 600°C for 3 h showed a fine and homogeneous morphology with particle sizes of 1-3 μm. At excitation at 980 nm, CaMoO4:Er3+/Yb3+ particles exhibited a strong 525-nm emission band and a weak 550-nm emission band in the green region, and a weak 655-nm emission band in the red region. The UC intensities of CaMoO4:Er3+/Yb3+ particles were much higher than that of the CaMoO4:Er3+ particles. The Raman spectra of CaMoO4:Er3+ and CaMoO4:Er3+/Yb3+ particles indicated the appearance of additional strong peaks in comparision with that of pure CaMoO4.

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Periodical:

Advanced Materials Research (Volume 804)

Pages:

36-41

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.804.36

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Online since:

September 2013

Authors:

Chang Sung Lim

Keywords:

CaMoO4:Er3+/Yb3+, Cyclic MAM Synthesis, Raman Spectroscopy, Upconversion Photoluminescence

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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