Photoluminescence investigations of Li2SiO3:Ln (Ln=Er3+, Eu3+, Dy3+, Sm3+) phosphors

Şabikoğlu, İsrafil; Ayvacıklı, M.; Bergeron, Andréanne; Ege, A.; Can, N.

doi:10.1016/j.jlumin.2012.02.008

Cited by 36 publications

(16 citation statements)

References 22 publications

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“…Er 3+ ion is responsible for all the emission bands in upconversion spectra. In monoclinic Gd 2 O 3 :Er 3+ it produces high intensity emission bands because of high transition probability[27][28][29].…”

mentioning

confidence: 99%

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Tamrakar

Bisen

Upadhyay³

et al. 2016

Journal of Alloys and Compounds

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mentioning

confidence: 99%

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Tamrakar

Bisen

Upadhyay³

et al. 2016

Journal of Alloys and Compounds

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“…The peaks at 389–392 nm are assigned to the 4 G 11/2 → 4 I 15/2 transition, those at 408–415 nm are due to 2 P 3/2 → 4 I 13/2 or 2 H 9/2 → 4 I 15/2 transitions, the peaks at 462–469 nm are assigned to 2 P 3/2 → 4 I 11/2 transitions, and the 553–568 nm bands correspond to 4 S 3/2 → 4 I 15/2 and 2 H 11/2 → 4 I 15/2 transitions. The peak at 668 nm is due to 4 F 9/2 → 4 I 15/2 and 4 I 9/2 → 4 I 15/2 transitions .…”

Section: Resultsmentioning

confidence: 97%

Influence of Er³⁺ concentration on the photoluminescence characteristics and excitation mechanism of Gd₂O₃:Er³⁺ phosphor synthesized via a solid‐state reaction method

2014

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An Er(3+) -doped phosphor of Gd2O3(Gd2O3:Er(3+)) was prepared using a conventional solid-state reaction method. The structure and particle size were determined from X-ray powder diffraction measurements. The average particle size of the phosphor was in between 20 and 50 nm. The particle size and structure of the phosphor were further confirmed by transmission electron microscopy (TEM) analysis. Luminescence spectra were recorded under excitation wavelengths of 275, 380, 515 and 980 nm. The visible upconversion and downconversion luminescence spectra of the Gd2O3:Er(3+) phosphor were investigated as a function of Er(3+) ion concentration. The upconverted emission at 980 nm excitation shows enhanced red emission with respect to green emission as the dopant concentration increased. Similar results were observed for downconversion emission under 275 and 380 nm excitation wavelengths. The mechanisms responsible for populating the (4)S3/2 and (4)F9/2 levels, for green and red emissions, respectively, are different for different excitations and for different concentrations of Er(3+).

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“…Silicates have been intensively studied as hosts for luminescent materials, due to their high chemical stability and various crystal structures . Eu 2 + ‐doped M 2 MgSi 2 O 7 (M = Ca, Sr, Ba) is a series of silicate phosphors with good properties .…”

Section: Introductionmentioning

confidence: 99%

“…Silicates have been intensively studied as hosts for luminescent materials, due to their high chemical stability and various crystal structures. [9,10] Eu 2+ -doped M 2 MgSi 2 O 7 (M = Ca, Sr, Ba) is a series of silicate phosphors with good properties. [11,12] These phosphors show broadband ultraviolet (UV) absorption and strong yellow, blue and green emission for M = Ca, Sr and Ba, respectively.…”

Section: Introductionmentioning

confidence: 99%

Strong green fluorescent hydrogels with Ba₂MgSi₂O₇:Eu²⁺ phosphor embedded in cellulose

2016

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Non-cytotoxic and green-emitting fluorescent hydrogels were constructed from a cellulose solution containing Ba MgSi O :Eu green phosphor in a NaOH/urea aqueous system. The structure, optical properties and cytotoxicity of these hydrogels were studied. The Ba MgSi O :Eu phosphor particles were dispersed evenly in the cellulose hydrogel matrix. Good luminescent properties of Ba MgSi O :Eu phosphor were maintained in the hydrogels, leading to strong green emission under ultraviolet excitation. Fluorescent hydrogels have no obvious cytotoxicity in a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) proliferation test, and have potential use in in vivo applications like optical imaging and drug delivery.

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Photoluminescence investigations of Li2SiO3:Ln (Ln=Er3+, Eu3+, Dy3+, Sm3+) phosphors

Cited by 36 publications

References 22 publications

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Influence of Er³⁺ concentration on the photoluminescence characteristics and excitation mechanism of Gd₂O₃:Er³⁺ phosphor synthesized via a solid‐state reaction method

Strong green fluorescent hydrogels with Ba₂MgSi₂O₇:Eu²⁺ phosphor embedded in cellulose

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Photoluminescence investigations of Li2SiO3:Ln (Ln=Er3+, Eu3+, Dy3+, Sm3+) phosphors

Cited by 36 publications

References 22 publications

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Influence of Er3+ concentration on the photoluminescence characteristics and excitation mechanism of Gd2O3:Er3+ phosphor synthesized via a solid‐state reaction method

Strong green fluorescent hydrogels with Ba2MgSi2O7:Eu2+ phosphor embedded in cellulose

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Influence of Er³⁺ concentration on the photoluminescence characteristics and excitation mechanism of Gd₂O₃:Er³⁺ phosphor synthesized via a solid‐state reaction method

Strong green fluorescent hydrogels with Ba₂MgSi₂O₇:Eu²⁺ phosphor embedded in cellulose