Comparative study of crystal field analysis in Pr3+ and Yb3+-doped K2LaX5 (X=Cl−, Br−) ternary halides and Yb3+-doped A3Lu(PO4)2 (A=Na+, Rb+) double phosphates. Charge transfer band observations of Yb3+-doped systems

2008 ◽  
Vol 30 (11) ◽  
pp. 1655-1666 ◽  
Author(s):  
J. Legendziewicz ◽  
J. Cybińska ◽  
M. Guzik ◽  
G. Boulon ◽  
G. Meyer
Keyword(s):  
Charge Transfer ◽  
Comparative Study ◽  
Crystal Field ◽  
Charge Transfer Band ◽  
Field Analysis

Photoluminescence and Crystal-Field Analysis of Pr3+-Doped SrMoO4 Phosphors

2015 ◽  
Vol 70 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Wenlin Feng ◽  
Huaping Lin ◽  
Honggang Liu
Keyword(s):  
Crystal Field ◽  
Charge Transfer Band ◽  
Hamiltonian Operator ◽  
Field Analysis ◽  
Energy Matrix ◽  
X Ray Diffraction ◽  
Strong Electron ◽  
Chromaticity Coordinates ◽  
Cie Chromaticity ◽  
Fluorescence Spectrometer

AbstractThe phosphor SrMoO4:Pr3+ was successfully prepared by high-temperature solid-state reaction process, and characterised by X-ray diffraction (XRD), scanning electron microscope (SEM), and fluorescence spectrometer. The results show that the prepared SrMoO4:Pr3+ has a scheelite structure with pure phase and represents leaf-like shapes with good dispersity. The strong electron absorbabilities are located at 220–300 nm (charge transfer band), 448, 474, and 487 nm, respectively. The emission spectrum of the SrMoO4:Pr3+ phosphor was characterised, which peaked at 529, 545, 554, 600, 619, and 645 nm, corresponding to the f–f transitions of Pr3+. The average International Commission on Illumination (CIE) chromaticity coordinates of the phosphors are x≈0.455, and y≈0.520, and the optimum doping mole fraction of Pr3+ is 0.2 mol.%. To better understand the fluorescent behavior of as-prepared phosphors, a complete 91×91 energy matrix was built by an effective Hamiltonian operator, including free ion and crystal-field interactions. The fluorescent spectra of Pr3+ ion at the tetragonal (S4) Sr2+ site of SrMoO4 crystal were firstly calculated from a full diagonalisation (of energy matrix) method. The fitting values are in good agreement with the experimental data.

Charge transfer band observed in bismuth mixed-valence oxides, Bi1−xYxO1.5+δ (x = 0.3)

1997 ◽  
Vol 104 (11) ◽  
pp. 705-708 ◽  
Author(s):  
H. Mizoguchi ◽  
H. Kawazoe ◽  
H. Hosono ◽  
S. Fujitsu
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Band ◽  
Mixed Valence

scholarly journals Charge Transfer, Band-Like Transport, and Magnetic Ions at F16CoPc/Rubrene Interfaces

2016 ◽  
Vol 3 (10) ◽  
pp. 1500863 ◽  
Author(s):  
Yulia Krupskaya ◽  
Florian Rückerl ◽  
Martin Knupfer ◽  
Alberto F. Morpurgo
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Band ◽  
Magnetic Ions

Spectroscopic studies and crystal-field analysis of U3+ ions in RbY2Cl7 single crystals

1997 ◽  
Vol 106 (8) ◽  
pp. 3067-3077 ◽  
Author(s):  
M. Karbowiak ◽  
J. Drozdzynski ◽  
K. M. Murdoch ◽  
N. M. Edelstein ◽  
S. Hubert
Keyword(s):  
Single Crystals ◽  
Crystal Field ◽  
Spectroscopic Studies ◽  
Field Analysis

Spectroscopy and crystal-field analysis of KY3F10:Ho3+

2009 ◽  
Vol 21 (25) ◽  
pp. 255402 ◽  
Author(s):  
Marjorie Mujaji ◽  
Jon-Paul R Wells
Keyword(s):  
Crystal Field ◽  
Field Analysis
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