Structure and up-conversion luminescence in sol–gel derived Er3+–Yb3+ co-doped SiO2:PbF2 nano-glass–ceramics

2009 ◽  
Vol 32 (1) ◽  
pp. 104-107 ◽  
Author(s):  
J. del-Castillo ◽  
A.C. Yanes ◽  
J. Méndez-Ramos ◽  
V.K. Tikhomirov ◽  
V.D. Rodríguez
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Co Doped

Ultraviolet and visible up-conversion luminescence of Er3+/Yb3+ co-doped CaF2 nanocrystals in sol–gel derived glass-ceramics

2013 ◽  
Vol 143 ◽  
pp. 150-156 ◽  
Author(s):  
S. Georgescu ◽  
A.M. Voiculescu ◽  
C. Matei ◽  
C.E. Secu ◽  
R.F. Negrea ◽  
...  
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Co Doped

Luminescence and long-lasting afterglow in Mn2+ and Eu3+ co-doped ZnO–GeO2 glasses and glass ceramics prepared by sol–gel method

2010 ◽  
Vol 56 (1) ◽  
pp. 82-86 ◽  
Author(s):  
Tomoe Sanada ◽  
Hisakazu Seto ◽  
Yusuke Morimoto ◽  
Kazuhiro Yamamoto ◽  
Noriyuki Wada ◽  
...  
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Gel Method ◽  
Sol Gel Method ◽  
Doped Zno ◽  
Co Doped

Colour Tuneability in Sol–Gel Nano-Glass-Ceramics Comprising Yb3+-Er3+-Tm3+ Co-Doped NaYF4 Nanocrystals

2010 ◽  
Vol 10 (2) ◽  
pp. 1273-1277 ◽  
Author(s):  
J. Méndez-Ramos ◽  
A. C. Yanes ◽  
A. Santana-Alonso ◽  
J. del-Castillo ◽  
V. D. Rodríguez
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Co Doped

Yb3+–Er3+ co-doped sol–gel transparent nano-glass-ceramics containing NaYF4 nanocrystals for tuneable up-conversion phosphors

2009 ◽  
Vol 480 (2) ◽  
pp. 706-710 ◽  
Author(s):  
A.C. Yanes ◽  
A. Santana-Alonso ◽  
J. Méndez-Ramos ◽  
J. del-Castillo ◽  
V.D. Rodríguez
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Co Doped

scholarly journals Structural and Photoluminescence Investigations of Tb3+/Eu3+ Co-Doped Silicate Sol-Gel Glass-Ceramics Containing CaF2 Nanocrystals

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 754
Author(s):  
Natalia Pawlik ◽  
Barbara Szpikowska-Sroka ◽  
Tomasz Goryczka ◽  
Joanna Pisarska ◽  
Wojciech A. Pisarski
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Emission Spectra ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Co Doping ◽  
Near Ultraviolet ◽  
Transmission Electron ◽  
Co Doped

In this work, the series of Tb3+/Eu3+ co-doped xerogels and derivative glass-ceramics containing CaF2 nanocrystals were prepared and characterized. The in situ formation of fluoride crystals was verified by an X-ray diffraction technique (XRD) and transmission electron microscopy (TEM). The studies of the Tb3+/Eu3+ energy transfer (ET) process were performed based on excitation and emission spectra along with luminescence decay analysis. According to emission spectra recorded under near-ultraviolet (NUV) excitation (351 nm, 7F6 → 5L9 transition of Tb3+), the mutual coexistence of the 5D4 → 7FJ (J = 6–3) (Tb3+) and the 5D0 → 7FJ (J = 0–4) (Eu3+) luminescence bands was clearly observed. The co-doping also resulted in gradual shortening of a lifetime from the 5D4 state of Tb3+ ions, and the ET efficiencies were varied from ηET = 11.9% (Tb3+:Eu3+ = 1:0.5) to ηET = 22.9% (Tb3+:Eu3+ = 1:2) for xerogels, and from ηET = 25.7% (Tb3+:Eu3+ = 1:0.5) up to ηET = 67.4% (Tb3+:Eu3+ = 1:2) for glass-ceramics. Performed decay analysis from the 5D0 (Eu3+) and the 5D4 (Tb3+) state revealed a correlation with the change in Tb3+–Eu3+ and Eu3+–Eu3+ interionic distances resulting from both the variable Tb3+:Eu3+ molar ratio and their partial segregation in CaF2 nanophase.

Spectroscopic characterization and up-conversion in sol–gel derived Yb3+–Pr3+ co-doped SiO2–LaF3 nano-glass-ceramics

2010 ◽  
Vol 356 (25-27) ◽  
pp. 1349-1353 ◽  
Author(s):  
J.J. Velázquez ◽  
A.C. Yanes ◽  
J. del-Castillo ◽  
J. Méndez-Ramos ◽  
V.D. Rodríguez
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Spectroscopic Characterization ◽  
Co Doped

Up-conversion in nanostructured Yb3+-Tm3+co-doped sol-gel derived SiO2-LaF3transparent glass-ceramics

2008 ◽  
Vol 205 (2) ◽  
pp. 330-334 ◽  
Author(s):  
J. Méndez-Ramos ◽  
J. J. Velázquez ◽  
A. C. Yanes ◽  
J. del-Castillo ◽  
V. D. Rodríguez
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Co Doped

Down-shifting by energy transfer in Dy3+–Tb3+ co-doped YF3-based sol–gel nano-glass-ceramics for photovoltaic applications

2011 ◽  
Vol 33 (4) ◽  
pp. 587-591 ◽  
Author(s):  
A. Santana-Alonso ◽  
A.C. Yanes ◽  
J. Méndez-Ramos ◽  
J. del-Castillo ◽  
V.D. Rodríguez
Keyword(s):  
Energy Transfer ◽  
Sol Gel ◽  
Glass Ceramics ◽  
Photovoltaic Applications ◽  
Co Doped
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