Energy level of lanthanide ions and anomalous emission of Eu2+ in Sr3B2O6 materials

Trac, Nguyen Ngoc; Tuyen, Ho Van; Quang, Vu Xuan; Nogami, Masayuki; Bao, Le Van Khoa; Thanh, Nguyen Huu; Son, Nguyen Manh; An, Nguyen Thi Thai; Hưng, Lê Xuân; Hong, Tran Thi

doi:10.1016/j.physb.2020.412373

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…The energy needed to transfer an electron from the valence band to a trivalent lanthanide impurity in a compound is called the charge transfer energy E CT . The E CT value of a trivalent lanthanide ion provides information on the locations of the ground state of the corresponding divalent lanthanide ion relative to the top of the valence band in the same compound, E CT (Ln 3+ , SAS) = EVf(Ln 2+ , SAS) [17,22,24]. Among lanthanide ions, Eu 3+ ion is often used to calculate the E CT value because it has the low charge transfer energy and therefore the E CT value is easy determined from its excitation spectrum.…”

Section: Construction Of the Energy Level Scheme Of Lanthanides In The Sas Host Latticementioning

confidence: 99%

“…It is known that, in different host lattices, the emission color and the thermal stability of luminescence materials are very various and these aspects are related to the position of energy levels of lanthanide ions in host lattice [15][16][17]. From information of the energy level position of a Ln ion in a compound, it will predict some luminescent and thermoluminescence properties of Ln ions in a compound.…”

Section: Introductionmentioning

confidence: 99%

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Energy Level Locations of Lanthanide Ions in Strontium-Aluminosilicate Phosphors

Tuyen¹,

Hà²

2021

MaP

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This paper determines the position of energy levels of lanthanide ions in Sr2Al2SiO7 (SAS) phosphor by a combining analysis of the lowest 4f-5d transition of Ce3+ ions and the charge transfer of Eu3+ ions-doped SAS phosphor. The SAS samples were successfully synthesized via solid state reaction, and their structure phase was further confirmed by X-ray diffraction. In the case of Eu3+-doped SAS phosphors, the energy of the charge transfer (CT) transition of the Eu3+ is about 4.70 eV (264 nm) and this energy is applied to determine the position 4f level of all divalent lanthanides relating to the top of the valence band in the SAS host lattice. For Ce3+ activated SAS samples, the lowest 4f1→4f05d1 excitation energy is determined around 3.71 eV (334 nm) and it is used to estimate the lowest 4f-5d transitions for all lanthanide (Ln) ions in host lattice. A broad band emission of the 5d→4f transition of Ce3+ ions includes two peaks emission with different energy about 1997 cm-1 that coincides with the theoretical value of 2000 cm-1. The host referred binding energy (HRBE) diagram of all Ln2+ and Ln3+ ions relating to the valance band of SAS materials has been constructed by using the data of fluorescent properties of Ce3+ and Eu3+ ions. The energy of 4f→5d transitions of Eu2+ ions that was predicted from the energy level scheme matches well with the observed experimental energy.

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Section: Construction Of the Energy Level Scheme Of Lanthanides In The Sas Host Latticementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Level Locations of Lanthanide Ions in Strontium-Aluminosilicate Phosphors

Tuyen¹,

Hà²

2021

MaP

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Preparation and Properties of Sr3B2O6:Dy3+, Eu3+ White Phosphors Using the High-Temperature Solid-State Method

Shi

Dong

et al. 2022

J Appl Spectrosc

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Combustion synthesis of Ba2Ca(BO3)2:Eu2+ phosphors and position of 4f and 5d energy levels of lanthanides in Ba2Ca(BO3)2 host lattice

et al. 2022

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Energy level of lanthanide ions and anomalous emission of Eu2+ in Sr3B2O6 materials

Cited by 5 publications

References 34 publications

Energy Level Locations of Lanthanide Ions in Strontium-Aluminosilicate Phosphors

Energy Level Locations of Lanthanide Ions in Strontium-Aluminosilicate Phosphors

Preparation and Properties of Sr3B2O6:Dy3+, Eu3+ White Phosphors Using the High-Temperature Solid-State Method

Combustion synthesis of Ba2Ca(BO3)2:Eu2+ phosphors and position of 4f and 5d energy levels of lanthanides in Ba2Ca(BO3)2 host lattice

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