Structural and photoluminescence characteristics of M3Al5O12:Eu3+ (M = Y, Gd and La) nanophosphors for optoelectronic applications

Singh, Devender; Kadyan, Sonika; Bhagwan, Shri

doi:10.1007/s10854-017-7187-9

Cited by 11 publications

(1 citation statement)

References 35 publications

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“…Field emission scanning electron microscopy was used to observe the microstructures of the BaMgSiO 4 :Yb 3+ ,Tb 3+ ceramics. The absorption spectra of the ceramics were measured by diffuse reflectance mode using a 4100 spectrophotometer equipped with an integrating sphere, [42,43] and the BaSO 4 was as a reference sample. The UCL spectra of the BaMgSiO 4 :Yb 3+ ,Tb 3+ ceramics were measured under 980 nm excitation (HITACHIU-F-7000).…”

Section: Wwwadvopticalmatdementioning

confidence: 99%

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO₄:Yb³⁺,Tb³⁺ Ceramics for Anti‐Counterfeiting Applications

Ren

Yang

et al. 2019

Advanced Optical Materials

137

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Reversible upconversion luminescence modification based on photochromism has received considerable interest due to its potential applications in optical storage and high‐sensitivity optical switches. However, stimulation‐induced bleaching by an external thermal field is generally used for photochromism‐induced reversible upconversion luminescence modification, which limits its practical application. In this work, a gray BaMgSiO4:Yb3+,Tb3+ ceramic is prepared, exhibiting the photochromism from gray to pink color when stimulated by 254 nm light. Interestingly, the pink BaMgSiO4:Yb3+,Tb3+ ceramic can be bleached by either a 473 nm laser or thermal stimulation. The reversible change between gray and pink color exhibits excellent reproducibility over several cycles by alternating between 254 and 473 nm (or thermal) light stimulation. The influence of the reversible photochromism of the BaMgSiO4:Yb3+,Tb3+ ceramic on its upconversion luminescence is investigated. Reversible modification of the upconversion luminescence is demonstrated by alternating between 254 and 473 nm (or thermal) light stimulation. For reversible modulation of the upconversion luminescence, excellent reproducibility is realized after several cycles. As an example, the application of the BaMgSiO4:Yb3+,Tb3+ photochromic ceramic as an anti‐counterfeiting agent is described.

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Section: Wwwadvopticalmatdementioning

confidence: 99%

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO₄:Yb³⁺,Tb³⁺ Ceramics for Anti‐Counterfeiting Applications

Ren

Yang

et al. 2019

Advanced Optical Materials

137

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Photoluminescence and structural analysis of trivalent europium doped MLaAl₃O₇ (M = Ba, Ca, Mg and Sr) nanophosphors

Kadyan

Singh

et al. 2020

Luminescence

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The solution combustion technique was used to synthesize MLaAl3O7 (M = Ba, Ca, Mg, and Sr) nanophosphors‐doped with Eu3+ using metal nitrates as precursors. The photoluminescence (PL) emission spectra exhibited three peaks at 587–591, 610–616, and 653–654 corresponding to 5D0→7F1, 5D0→7F2, and 5D0→7F3 transitions, respectively. Upon excitation at 254 nm, these nanophosphors displayed strong red emission with the dominant peak attributed to the 5D0→7F2 transition of Eu3+. The materials were further heated at 900 and 1050°C for 2 h to examine the consequence of temperature on crystal lattice and PL emission intensity. X‐ray diffraction (XRD) analysis proved that all the synthesized materials were of a crystalline nature. CaLaAl3O7 material has a tetragonal crystal structure with space group P421m. Scherer's equation was used to calculate the crystallite size of synthesized phosphors using XRD data. A Fourier transformation infrared study was used to observe the stretching vibrations of metal–oxygen bonds. Infrared peaks for stretching vibrations corresponding to lanthanum–oxygen and aluminium–oxygen bonds were found at 582 and 777 cm–1 respectively for CaLaAl3O7 phosphor material. Transmission electron microscopy images were used to determine the size of particles (18–37 nm for the as‐prepared materials) and also to analyze the three‐dimensional view of these materials. The experimental data indicate that these materials may be promising red‐emitting nanophosphors for use in white light‐emitting diodes.

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Preparation of Y3Al5O12:Ce nanophosphors using salt microemulsion method and their luminescent properties

et al. 2018

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Structural and photoluminescence characteristics of M3Al5O12:Eu3+ (M = Y, Gd and La) nanophosphors for optoelectronic applications

Cited by 11 publications

References 35 publications

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO₄:Yb³⁺,Tb³⁺ Ceramics for Anti‐Counterfeiting Applications

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO₄:Yb³⁺,Tb³⁺ Ceramics for Anti‐Counterfeiting Applications

Photoluminescence and structural analysis of trivalent europium doped MLaAl₃O₇ (M = Ba, Ca, Mg and Sr) nanophosphors

Preparation of Y3Al5O12:Ce nanophosphors using salt microemulsion method and their luminescent properties

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Structural and photoluminescence characteristics of M3Al5O12:Eu3+ (M = Y, Gd and La) nanophosphors for optoelectronic applications

Cited by 11 publications

References 35 publications

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO4:Yb3+,Tb3+ Ceramics for Anti‐Counterfeiting Applications

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO4:Yb3+,Tb3+ Ceramics for Anti‐Counterfeiting Applications

Photoluminescence and structural analysis of trivalent europium doped MLaAl3O7 (M = Ba, Ca, Mg and Sr) nanophosphors

Preparation of Y3Al5O12:Ce nanophosphors using salt microemulsion method and their luminescent properties

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Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO₄:Yb³⁺,Tb³⁺ Ceramics for Anti‐Counterfeiting Applications

Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO₄:Yb³⁺,Tb³⁺ Ceramics for Anti‐Counterfeiting Applications

Photoluminescence and structural analysis of trivalent europium doped MLaAl₃O₇ (M = Ba, Ca, Mg and Sr) nanophosphors