Energy level location of divalent and trivalent lanthanides in calcium aluminosilicate materials

Ca 2 Al 2 SiO 7 (CAS) doped with Eu 3+ , Ce 3+ , and Tb 3+ ions (1 mol%) were synthesized by solid-state reaction at 1280 °C and spectroscopic studies of the prepared samples were performed by photoluminescence and photoluminescence excitation spectra at room temperature. Energies of the lowest f-d...

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Veröffentlicht in:Journal of materials science. Materials in electronics 2021-02, Vol.32 (4), p.4239-4247
Hauptverfasser: Trac, Nguyen Ngoc, Van Tuyen, Ho, Van Khoa Bao, Le, Vi, Nguyen Ha, Thuan, A. N. H.
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container_issue 4
container_start_page 4239
container_title Journal of materials science. Materials in electronics
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creator Trac, Nguyen Ngoc
Van Tuyen, Ho
Van Khoa Bao, Le
Vi, Nguyen Ha
Thuan, A. N. H.
description Ca 2 Al 2 SiO 7 (CAS) doped with Eu 3+ , Ce 3+ , and Tb 3+ ions (1 mol%) were synthesized by solid-state reaction at 1280 °C and spectroscopic studies of the prepared samples were performed by photoluminescence and photoluminescence excitation spectra at room temperature. Energies of the lowest f-d transition of Ce 3+ ions and charge transfer process of Eu 3+ ions obtained from photoluminescence excitation spectra were used to predict the energy levels of all divalent and trivalent lanthanides relative to the valence and conduction bands of CAS host lattice and to construct the host referred binding energy and vacuum referred binding energy schemes. The predicted energies for Tb 3+ ions are in good agreement with experimental energies indicating the obtained energy level scheme provides a better understanding of the luminescent processes in Ca 2 Al 2 SiO 7 material.
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subjects Aluminosilicates
Aluminum silicates
Binding energy
Cerium
Characterization and Evaluation of Materials
Charge transfer
Chemical synthesis
Chemistry and Materials Science
Conduction bands
Energy
Energy levels
Europium
Excitation spectra
Lanthanides
Materials Science
Optical and Electronic Materials
Photoluminescence
R&D
Radiation
Research & development
Room temperature
Terbium
title Energy level location of divalent and trivalent lanthanides in calcium aluminosilicate materials
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