scholarly journals Influence of composition and structure on the thermal quenching of the 5d–4f emission of Eu2+ doped M–Si–N (M = alkali, alkaline earth, rare earth) nitridosilicates

2019 ◽  
Vol 7 (21) ◽  
pp. 6289-6300 ◽  
Author(s):  
Otmar M. ten Kate ◽  
J. Ruud van Ommen ◽  
H. T. (Bert) Hintzen
Keyword(s):  
Rare Earth ◽  
Alkaline Earth ◽  
Thermal Quenching ◽  
Composition And Structure ◽  
The Eu

Thermal quenching of the Eu2+ emission in the nitridosilicates has been analysed and related to structure and composition.

Phase composition of modern microcrystalline modifiers containing silicon, alkaline earth and rare earth metals

2020 ◽  
pp. 25-34
Author(s):  
V. P. Ermakova ◽  
◽  
S. Yu. Melchakov ◽  
V. G. Smirnova ◽  
L. A. Ovchinnikova ◽  
...  
Keyword(s):  
Rare Earth ◽  
Phase Composition ◽  
Alkaline Earth ◽  
Rare Earth Metals

ChemInform Abstract: RADIOCRYSTALLOGRAPHIC AND OPTICAL STUDY OF DOUBLE RARE EARTH AND ALKALINE EARTH GALLATES

1978 ◽  
Vol 9 (5) ◽  
Author(s):  
NGUYEN-TRUT-DINH NGUYEN-TRUT-DINH ◽  
G. LE FLEM ◽  
J. FAVA ◽  
A. DAOUDI ◽  
G. DEMAZEAU
Keyword(s):  
Rare Earth ◽  
Alkaline Earth ◽  
Optical Study

scholarly journals Increased hole mobility in anti-ThCr2Si2-type La2O2Bi co-sintered with alkaline earth metal oxides for oxygen intercalation and hole carrier doping

2021 ◽  
Author(s):  
Kota Matsumoto ◽  
Hideyuki Kawasoko ◽  
Noriaki Kimura ◽  
Tomoteru Fukumura
Keyword(s):  
Rare Earth ◽  
Metal Oxides ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Hole Mobility ◽  
Alkaline Earth Metal ◽  
Alkaline Earth Metal Oxides ◽  
Oxygen Intercalation ◽  
Axis Length ◽  
Carrier Doping

Metallic anti-ThCr2Si2-type RE2O2Bi (RE = rare earth) with Bi square nets show superconductivity while insulating La2O2Bi shows high hole mobility, by expanding the c-axis length through oxygen intercalation. In this...

Synthesis, Spectral Characterization and Luminescent Properties of Ternary Rare Earth Nitrates Complexes with 2-Acetylpyridine-tris(2-aminoethyl)amine and Pyridine-N-oxide Ligand

2011 ◽  
Vol 322 ◽  
pp. 337-340
Author(s):  
Lian Cai Du
Keyword(s):  
Thermal Analysis ◽  
Rare Earth ◽  
Luminescent Properties ◽  
Ternary Complexes ◽  
Molar Conductivity ◽  
Lanthanide Ions ◽  
Fluorescent Properties ◽  
Tripodal Ligand ◽  
Rare Earth Nitrates ◽  
The Eu

A tripodal ligand, 2-acetylpyridine-tris(2-aminoethyl)amine (L), pyridine-N-oxide and their ternary complexes with rare earth nitrates have been synthesized. These new complexes with the general formula of Ln·L·PyNO·(NO3)3·nH2O (where Ln = La, Nd, Tb, Pr, Eu, n = 1~3 ) were characterized by elemental analysis, IR spectra, thermal analysis and molar conductivity. All the complexes are stable in air. The results show that the lanthanide ions in each complex are coordinated by nitrogen atoms of the ligand, oxygen atoms of PyNO and the nitrates. The fluorescent properties of the Eu(III) and Tb(III) complexes in solid were investigated.

Photoionization thresholds of divalent rare earth ions in alkaline earth fluorides

1979 ◽  
Vol 70 (11) ◽  
pp. 4959-4962 ◽  
Author(s):  
Christian Pedrini ◽  
Donald S. McClure ◽  
Charles H. Anderson
Keyword(s):  
Rare Earth ◽  
Alkaline Earth ◽  
Rare Earth Ions

Rare Earth Doped Zinc Oxide Nanowires

2008 ◽  
Vol 8 (1) ◽  
pp. 244-251 ◽  
Author(s):  
S. Geburt ◽  
D. Stichtenoth ◽  
S. Müller ◽  
W. Dewald ◽  
C. Ronning ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Rare Earth ◽  
Thermal Quenching ◽  
Wide Band ◽  
Wide Band Gap ◽  
Oxide Nanowires ◽  
Defect Sites ◽  
Optical Activation ◽  
Re Elements ◽  
Rare Earth Doped

Zinc oxide (ZnO) nanowires were grown via thermal transport and subsequently doped with different concentrations of Tm, Yb, and Eu using ion implantation and post annealing. High ion fluences lead to morphology changes due to sputtering; however, freestanding nanowires become less damaged compared to those attached to substrates. No other phases like rare earth (RE) oxides were detected, no amorphization occurs in any sample, and homogeneous doping with the desired concentrations was achieved. Photoluminescence measurements demonstrate the optical activation of trivalent RE-elements and the emission of the characteristic intra-4f-luminescence of the respective RE atoms, which could be assigned according to the Dieke-diagram. An increasing RE concentration results into decreasing luminescence intensity caused by energy transfer mechanisms to non-radiative remaining implantation defect sites. Furthermore, low thermal quenching was observed due to the considerable wide band gap of ZnO.

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