scholarly journals Large Charge-Transfer Energy in LiFePO4 Revealed by Full-Multiplet Calculation for the Fe L 3 -edge Soft X-ray Emission Spectra

ChemPhysChem ◽  
2018 ◽  
Vol 19 (8) ◽  
pp. 988-992 ◽  
Author(s):  
Daisuke Asakura ◽  
Yusuke Nanba ◽  
Yuki Makinose ◽  
Hirofumi Matsuda ◽  
Per-Anders Glans ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Emission Spectra ◽  
Transfer Energy ◽  
X Ray ◽  
Charge Transfer Energy ◽  
Large Charge

scholarly journals Charge-transfer energy in iridates: A hard x-ray photoelectron spectroscopy study

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
D. Takegami ◽  
D. Kasinathan ◽  
K. K. Wolff ◽  
S. G. Altendorf ◽  
C. F. Chang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Photoelectron Spectroscopy ◽  
Spectroscopy Study ◽  
Transfer Energy ◽  
X Ray ◽  
Charge Transfer Energy

F−-Eu3+ charge transfer energy and local crystal environment in Eu3+ doped calcium fluoride

2017 ◽  
Vol 43 (16) ◽  
pp. 13089-13093 ◽  
Author(s):  
Yu Pan ◽  
Wenjun Wang ◽  
Liqun Zhou ◽  
Haibing Xu ◽  
Qinghua Xia ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Calcium Fluoride ◽  
Transfer Energy ◽  
Charge Transfer Energy

scholarly journals Synthesis and Luminescent Properties of Eu3+/Tb3+ Rare Earth Ions Doped Li2SrSiO4 Phosphors

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Kaitao Yu ◽  
Lifang Wei ◽  
Jiaqi Shen
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Band ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Rare Earth Ions ◽  
Luminescent Materials ◽  
Excitation Spectra ◽  
Solid State Method ◽  
X Ray ◽  
Uv Visible

The series of luminescent materials of Eu3 +, Tb3 + doped Li2SrSiO4 were synthesized by a high-temperature solid-state method. The phase purity of the samples was measured by X-ray powder diffraction (XRD). The luminescent properties of the samples were studied by UV-visible excitation spectra and emission spectra The It is found that the strong absorption of Eu3 + doped Li2-xSr1-xEuxSiO4 is from the 250 ~ 290 nm charge transfer band of Eu3 + and the 7F0 → 5L6 absorption transition of 393 nm. The strongest emission of the emission spectra at 393 nm is 614 nm and 701 nm, respectively, from the 5D0 → 7F2 and 5D0 → 7F4 transitions of Eu3 +. Tb3 + doped sample Li2-xSr1-xTb xSiO4 excitation spectrum is mainly composed of Tb3 + ion fd transition and charge transfer band composed of broadband, the strongest absorption at 269 nm, the emission of the main emission of 5D4 → 7F5 transition (542 nm).

Origin of the Band Gap in the Negative Charge-Transfer-Energy Compound NaCuO2

1993 ◽  
Vol 70 (10) ◽  
pp. 1565-1565 ◽  
Author(s):  
T. Mizokawa ◽  
H. Namatame ◽  
A. Fujimori ◽  
K. Akeyama ◽  
H. Kondoh ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Band Gap ◽  
Negative Charge ◽  
Transfer Energy ◽  
Charge Transfer Energy

Study on UV Excitation Properties of Y2O3:Ln3+ (Ln = Eu3+ or Tb3+) Luminescent Nanomaterials

2008 ◽  
Vol 8 (3) ◽  
pp. 1443-1448 ◽  
Author(s):  
Qingyu Meng ◽  
Baojiu Chen ◽  
Xiaoxia Zhao ◽  
Xiaojun Wang ◽  
Wu Xu
Keyword(s):  
Particle Size ◽  
Charge Transfer ◽  
Charge Transfer Band ◽  
Emission Spectra ◽  
X Ray Diffraction ◽  
Bulk Materials ◽  
Excitation Spectra ◽  
X Ray ◽  
Long Wavelength ◽  
Uv Excitation

Y2O3:Ln3+ (Ln = Eu or Tb) nanocrystals with different Ln3+ doping concentrations and average sizes were prepared by chemical self-combustion. The corresponding bulk materials with various doping concentrations were obtained by annealing the nanomaterials at high temperature. The emission spectra, excitation spectra, and X-ray diffraction spectra were used in this study. It was found that the charge transfer band of Y2O3:Eu3+ red-shifted as particle size decreased, and the charge transfer band in the 5-nm particles obviously broadened toward the long wavelength. It was also found that the profile of excitation spectra corresponding to the 4f5d (4f8 → 4f75d1) transition changed a lot with the variation of the particle size. The dependence of the excitation spectra of Y2O3:Ln3+ on particle size was investigated.

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