scholarly journals Alkali metal impact on structural and phonon properties of Er3+ and Tm3+ co-doped MY(WO4)2 (M = Li, Na, K) nanocrystals

RSC Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 2632-2641 ◽  
Author(s):  
P. Ropuszyńska-Robak ◽  
P. E. Tomaszewski ◽  
L. Kępiński ◽  
L. Macalik
Keyword(s):  
Alkali Metal ◽  
Pechini Method ◽  
Nanocrystalline Powders ◽  
Co Doped ◽  
Metal Impact ◽  
Phonon Properties

TEM images of NaY(WO4)2:Er, Tm nanocrystalline powders synthesized by the Pechini method after calcination at (a) 550 °C, (b) 600 °C and (c) 700 °C.

Emission Brightness and Concentration Quenching Threshold of GdVO 4  : Eu 3+ Nanophosphors Co‐Doped with Alkali Metal Ions

2021 ◽  
Vol 6 (47) ◽  
pp. 13452-13460
Author(s):  
Yuanyuan Yang ◽  
Yinglin Yan ◽  
Chaojiang Fan ◽  
Yiming Zou ◽  
Juan Wang ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Metal Ions ◽  
Concentration Quenching ◽  
Alkali Metal Ions ◽  
Co Doped

Synthesis and Study of Nanocrystalline Mg2SiO4 Powder and Yttrium Aluminum Garnet

2019 ◽  
Vol 822 ◽  
pp. 334-342
Author(s):  
Aleksander Semencha ◽  
Elena V. Bochagina ◽  
Margarita G. Dronova
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Pechini Method ◽  
Average Pore Size ◽  
Magnesium Silicate ◽  
Nanocrystalline Powders ◽  
Inorganic Salts ◽  
Average Pore ◽  
Synthesis Parameters ◽  
Modified Pechini Method ◽  
Yttrium Aluminum

The work investigates the characteristics of the porosity of inorganic salts: magnesium silicate and yttrium aluminum garnet (YAG). Using the example of nanocrystalline powders of magnesium silicate and yttrium aluminum garnet, the effect of synthesis parameters on the phase composition and porous characteristics of the obtained powders was studied. The average pore size of adsorbents was obtained: magnesium silicate - 48 nm; YAG, obtained by the standard Pechini method – 44 nm; YAG, obtained by the modified Pechini method – 37 nm; the industrial brand “magnesol” – 32 nm. The resulting materials can be attributed to mesoporous adsorbents.

Luminescence enhancement in bromine and samarium co-doped TiO2 semiconductor nanocrystalline powders

2008 ◽  
Vol 128 (4) ◽  
pp. 559-564 ◽  
Author(s):  
Chunmei Gao ◽  
Hongwei Song ◽  
Lanying Hu ◽  
Guohui Pan ◽  
Ruifei Qin ◽  
...  
Keyword(s):  
Nanocrystalline Powders ◽  
Luminescence Enhancement ◽  
Doped Tio2 ◽  
Co Doped

Synthesis and Luminescence Properties of Yb3+/Ho3+ Co-Doped Lu2O3 Nanocrystalline Powders

2007 ◽  
Vol 280-283 ◽  
pp. 521-524
Author(s):  
Li Qiong An ◽  
Jian Zhang ◽  
Min Liu ◽  
Sheng Wu Wang
Keyword(s):  
Electron Microscopy ◽  
Upconversion Luminescence ◽  
Nanocrystalline Powders ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Excitation Spectra ◽  
X Ray ◽  
Transmission Electron ◽  
Co Precipitation ◽  
Co Doped

Yb3+ and Ho3+ co-doped Lu2O3 nanocrystalline powders were synthesized by a reversestrike co-precipitation method. The as-prepared powders were examined by the X-ray diffraction and transmission electron microscopy. The phase composition of the powders was cubic and the particle size was in the range of 30~50 nm. Emission and excitation spectra of the powders were measured by a spectrofluorometer and the possible upconversion luminescence mechanism was also discussed.

Synthesis and spectroscopic properties of Yb3+ and Tb3+ co-doped GdBO3 materials showing down- and up-conversion luminescence

2015 ◽  
Vol 44 (9) ◽  
pp. 4063-4069 ◽  
Author(s):  
Tomasz Grzyb ◽  
Konrad Kubasiewicz ◽  
Agata Szczeszak ◽  
Stefan Lis
Keyword(s):  
Pechini Method ◽  
Sol Gel ◽  
Spectroscopic Properties ◽  
Dual Mode ◽  
Co Doped

Gadolinium orthoborates doped with Yb3+ and Tb3+ ions, showing dual-mode luminescence (down- and up-conversion), were synthesised by the sol–gel Pechini method and analysed.

Co-doped α-MoO3 hierarchical microrods: Synthesis, structure and phonon properties

2021 ◽  
Author(s):  
Caique D.A. Lima ◽  
João V.B. Moura ◽  
Gardênia S. Pinheiro ◽  
Jefferson F.D.F. Araujo ◽  
Suziete B.S. Gusmão ◽  
...  
Keyword(s):  
Co Doped ◽  
Phonon Properties

Upconversion luminescence modulated by alkali metal (Li, Na, and K) induced crystallization in Er3+/Yb3+ co-doped β-PbF2 oxyfluoride glass ceramics

CrystEngComm ◽  
2020 ◽  
Vol 22 (4) ◽  
pp. 686-694 ◽  
Author(s):  
Yuao Guo ◽  
Lijuan Zhao ◽  
Yuting Fu ◽  
Haotian Dong ◽  
Hua Yu
Keyword(s):  
Alkali Metal ◽  
Alkali Metals ◽  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Oxyfluoride Glass ◽  
Induced Crystallization ◽  
Co Doped

Upconversion luminescence of Er3+/Yb3+ co-doped β-PbF2 oxyfluoride glass ceramics modulated by alkali metals (Li, Na, and K).

Energy transfer between Tb3+ and Eu3+ in co-doped Y2O3 nanocrystals prepared by Pechini method

2013 ◽  
Vol 15 (7) ◽  
Author(s):  
M. Back ◽  
M. Boffelli ◽  
A. Massari ◽  
R. Marin ◽  
F. Enrichi ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Pechini Method ◽  
Co Doped
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