Heterodinuclear (Sm, Tb) lanthanide pivalates with heterocyclic N-donors: synthesis, structure, thermal behavior, and magnetic and photoluminescence properties

2014 ◽  
Vol 43 (48) ◽  
pp. 18104-18116 ◽  
Author(s):  
Irina G. Fomina ◽  
Zhanna V. Dobrokhotova ◽  
Andrey B. Ilyukhin ◽  
Valery I. Zhilov ◽  
Artem S. Bogomyakov ◽  
...  

The PL color evidently changes from red at 300 K to bright green at 77 K.

2015 ◽  
Vol 44 (11) ◽  
pp. 5095-5105 ◽  
Author(s):  
Bing Guo ◽  
Xiao Zhang ◽  
Yan-Ning Wang ◽  
Jing-Jing Huang ◽  
Jie-Hui Yu ◽  
...  

Reactions of CdCl2/Cd(CH3COO)2, SCN− and various organic amines yielded five new thiocyanatocadmates; structural, thermal and photoluminescence properties are reported.


2016 ◽  
Vol 852 ◽  
pp. 496-501
Author(s):  
Xue Bin Qiao ◽  
Hyo Jin Seo

s. Tb3+-doped LiYb1-xTbx(MoO4)2 (x = 0.01-1) solid solutions were prepared by solid state reaction. Structural of the solid solution series was carried out by X-ray powder diffraction. By increasing the Tb3+concentration, the XRD results reveal that LiYb1-xTbx(MoO4)2 adopt a tetragonal structure with space group of I4(No. 82) and transfer to tetragonal structurewith space group of P41/a (No.88) systemically. The emission and excitation spectra were employed to characterize the synthesized phosphors. Theexcitation spectra showed that LiYb1-xTbx(MoO4)2 can be efficiently excited by the lights of 250-500 nm, which well match with the emission wavelength of near-UV and blue LEDs chips. The phosphor showed bright green luminescence peaking at around 545 nm under the excitation at 266 nm and 490 nm.The Luminescence intensities are investigated under different Tb3+ concentrations. The luminescence decay and the color coordinates were also discussed in order to further investigate the potential applications.


2010 ◽  
Vol 1247 ◽  
Author(s):  
Rocío Calderón-Villajos ◽  
Carlos Zaldo ◽  
Concepción Cascales

AbstractControlled reaction conditions in simple, template-free hydrothermal processes yield Tm-Lu2O3 and Tm-GdVO4 nanocrystals with well-defined specific morphologies and sizes. In both oxide families, nanocrystals prepared at pH 7 reaction media exhibit photoluminescence in ∼1.95 μm similar to bulk single crystals. For the lowest Tm3+ concentration (0.2 % mol) in GdVO4 measured 3H4 and 3F4 fluorescence lifetimes τ are very near to τrad.


2020 ◽  
Vol 40 (suppl 2) ◽  
pp. 597-604
Author(s):  
Zahra NILCHIAN ◽  
Mohamad Reza EHSANI ◽  
Zahra PIRAVI-VANAK ◽  
Hossein BAKHODA

2019 ◽  
Vol 50 (17) ◽  
pp. 1721-1736
Author(s):  
Kaiqiang Hou ◽  
Xiaolong Weng ◽  
Wei Luo ◽  
Le Yuan ◽  
Wei Duan ◽  
...  

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