Optical properties of SrSi2O2N2:Eu2+ phosphor enhanced by the addition of carbonate or fluoride reactive agents

Adamczyk, Burkart; Brik, M.G.; Nagirnyi, V.; Romet, Ivo; Michalik, Daniel; Pawlik, Tomasz; Sopicka-Lizer, Małgorzata

doi:10.1016/j.jallcom.2020.155468

Cited by 11 publications

(1 citation statement)

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“…It has also been proved that phosphors with higher QYs can be obtained by adding alkali carbonates or by using an appropriate ratio of Si precursors in the SrSi 2 N 2 O 2 :Eu synthesis, although the phase compositions of the resultant materials are complex. The presence of additional phases can affect the shape and position of the luminescence spectrum of the phosphor, as well.…”

Section: Resultsmentioning

confidence: 99%

Mechanism of the Luminescence Enhancement of SrSi₂N₂O₂:Eu²⁺ Phosphor via Manganese Addition

et al. 2022

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The addition of Mn-O-based compounds during the solid-state synthesis of SrSi2N2O2:Eu2+ significantly increases the luminescence intensity of this phosphor. Hitherto, this effect was explained as the energy transfer between Eu2+ and Mn2+ ions. Using electron paramagnetic resonance and optical techniques, we show that Mn is not incorporated into the SrSi2N2O2 host; nevertheless, attempts to dope improve the luminescence quantum yield (QY) of this compound. Moreover, we found that codoping exertion with Mn ions in the synthesis process may also cause the enhancement of persistent luminescence and mechanoluminescence. It is also shown that the structure of the primary defects in SrSi2N2O2:Eu2+ does not change by adding Mn during the synthesis of this oxynitridosilicate, except their concentration. The changes of the radiative decay time of Eu2+ induced by attempts of codoping are responsible for the observed increase of the luminescence QY of this phosphor.

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Section: Resultsmentioning

confidence: 99%

Mechanism of the Luminescence Enhancement of SrSi₂N₂O₂:Eu²⁺ Phosphor via Manganese Addition

et al. 2022

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A Color‐tunable Nitride Phosphor for Near‐Ultraviolet Excitation of White Light‐emitting Diodes

Wang

Sun

Lyu

et al. 2022

Chemistry An Asian Journal

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Due to the diversity of structure and composition and the unique coordination environment, nitride materials enable the doped activator ions to possess compelling luminescence characteristics, such as rich emission colors, favorable stability and tunable emission spectra. Here, novel SrLuSi4N7:Ce3+,Tb3+ nitride phosphors were successfully synthesized by a modified carbothermal reduction and nitridation method at atmospheric pressure. SrLuSi4N7 (SLSN) belongs to hexagonal symmetry, with space group P63mc, and its crystal structure is composed of the basic building block with corner‐sharing [SiN4] tetrahedron. Under 365 nm excitation, SLSN:Ce3+ exhibits a broad emission band peaking at 450 nm with a full width at half‐maximum (FWHM) of 92 nm and the most forceful intensity obtained at the Ce3+ concentration amount of 0.04. On the basis of the efficient energy transfer, SLSN:Ce3+,Tb3+ exhibits color‐tunable emission from blue (450 nm) to green (545 nm). Our results indicate that SLSN nitride phosphor is a promising candidate for near‐ultraviolet (n‐UV) based white LEDs.

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Facile and highly efficient wet synthesis of nanocrystalline BiFeO3particles by reverse co-precipitation method

Godzierz

Olesik

Otulakowski

et al. 2023

Ceramics International

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Optical properties of SrSi2O2N2:Eu2+ phosphor enhanced by the addition of carbonate or fluoride reactive agents

Cited by 11 publications

References 50 publications

Mechanism of the Luminescence Enhancement of SrSi₂N₂O₂:Eu²⁺ Phosphor via Manganese Addition

Mechanism of the Luminescence Enhancement of SrSi₂N₂O₂:Eu²⁺ Phosphor via Manganese Addition

A Color‐tunable Nitride Phosphor for Near‐Ultraviolet Excitation of White Light‐emitting Diodes

Facile and highly efficient wet synthesis of nanocrystalline BiFeO3particles by reverse co-precipitation method

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Optical properties of SrSi2O2N2:Eu2+ phosphor enhanced by the addition of carbonate or fluoride reactive agents

Cited by 11 publications

References 50 publications

Mechanism of the Luminescence Enhancement of SrSi2N2O2:Eu2+ Phosphor via Manganese Addition

Mechanism of the Luminescence Enhancement of SrSi2N2O2:Eu2+ Phosphor via Manganese Addition

A Color‐tunable Nitride Phosphor for Near‐Ultraviolet Excitation of White Light‐emitting Diodes

Facile and highly efficient wet synthesis of nanocrystalline BiFeO3particles by reverse co-precipitation method

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Mechanism of the Luminescence Enhancement of SrSi₂N₂O₂:Eu²⁺ Phosphor via Manganese Addition

Mechanism of the Luminescence Enhancement of SrSi₂N₂O₂:Eu²⁺ Phosphor via Manganese Addition