scholarly journals Microwave-Assisted Metathetic Synthesis of Er3+/Yb3+ Co-Doped BaMoO4 Particles and Their Upconversion Photoluminescence Properties

2013 ◽  
Vol 25 (10) ◽  
pp. 5747-5750
Author(s):  
Chang Sung Lim
Keyword(s):  
Photoluminescence Properties ◽  
Microwave Assisted ◽  
Upconversion Photoluminescence ◽  
Co Doped

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

2013 ◽  
Vol 804 ◽  
pp. 36-41
Author(s):  
Chang Sung Lim
Keyword(s):  
Heat Treatment ◽  
Raman Spectra ◽  
Emission Band ◽  
Particle Sizes ◽  
Photoluminescence Properties ◽  
Microwave Assisted ◽  
Upconversion Photoluminescence ◽  
Co Doped

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.

Cyclic MAM Synthesis and Upconversion Photoluminescence Properties of SrMoO4:Er3+/Yb3+ Particles

2014 ◽  
Vol 472 ◽  
pp. 632-636
Author(s):  
Sung Lim Chang
Keyword(s):  
Heat Treatment ◽  
Raman Spectra ◽  
Emission Band ◽  
Photoluminescence Properties ◽  
Microwave Assisted ◽  
Upconversion Photoluminescence ◽  
Co Doped ◽  
Lower Frequencies

Er3+doped SrMoO4(SrMoO4:Er3+) and Er3+/Yb3+co-doped SrMoO4(SrMoO4:Er3+/Yb3+) particles were successfully synthesized by a cyclic microwave-assisted metathetic (MAM) route followed by heat treatment. The microstructures exhibited well-defined and homogeneous morphology with particles sizes of 100500 nm. With excitation at 980 nm, SrMoO4:Er3+and SrMoO4: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 Raman spectra of SrMoO4:Er3+and SrMoO4:Er3+/Yb3+particles indicated the detection of additional strong peaks at both higher frequencies (564, 524, 456, and 403 cm-1) and lower frequencies (294, 251, and 220 cm-1).

Upconversion photoluminescence properties of Ho3+/Yb3+ co-doped YNbO4 powder

2018 ◽  
Vol 75 ◽  
pp. 68-73 ◽  
Author(s):  
Chunhui Niu ◽  
Leiwei Li ◽  
Xiaoying Li ◽  
Yong Lv ◽  
Xiaoping Lang
Keyword(s):  
Photoluminescence Properties ◽  
Upconversion Photoluminescence ◽  
Co Doped
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