Preparation of highly ordered growth of single-crystalline Gd2O2S:Eu3+ nanostructures

Thirumalai, Jagannathan; Chandramohan, R.; Vijayan, T. A.; Somasundaram, R.

doi:10.1016/j.materresbull.2010.10.010

Cited by 16 publications

(4 citation statements)

References 34 publications

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“…(1) Different preparation methods, such as vacuum sintering, precipitation, solvothermal methods, thermal decomposition and other methods were adopted to prepare oxysulde luminescent materials, and to regulate size, morphology, and shape of the product obtained. [19][20][21][22] In recent years, most of the work was mainly contributed to the synthesis of nano oxysulde-based materials.…”

Section: -3mentioning

confidence: 99%

Luminescence property tuning of Yb³⁺-Er³⁺ doped oxysulfide using multiple-band co-excitation

et al. 2018

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Lanthanide ions have abundant excited-state channels which result in a radiation relaxation process generally accompanied by a non-radiation relaxation process. However, non-radiation relaxation processes will consume the activation energy and reduce the luminescence efficiency of the phosphor.Two lasers with an excitation energy which matched the ground state absorption and excited state absorption of ions were used to excite the phosphors to avoid the non-radiation relaxation process. This approach can achieve the purpose of populating specific states of the lanthanide ions, and furthermore effectively tunes the luminescence intensity and color output of the sample. Results show that the red emission intensity of the sample is significantly improved and this is caused by populating the 4 F 9/2 level under simultaneous 1510 nm and 980 nm excitation. Then when the 1510 nm and 808 nm co-operate to excite the sample, the green emission obtained increased sharply because the 2 H 11/2 / 4 S 3/2 states were efficiently populated. As a proof-of-concept experiment, this new approach has potential in the applications of solar cells.

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Section: -3mentioning

confidence: 99%

Luminescence property tuning of Yb³⁺-Er³⁺ doped oxysulfide using multiple-band co-excitation

et al. 2018

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“…Lanthanide-doped luminescent materials have received considerable attention for their wide applications in high-resolution displays, integrated optical systems, memory devices, photonics, optoelectronics, afterglow, solid state lasers and especially biological label phosphors [1][2][3]. Moreover, Gd 2 O 2 S is an excellent luminescent host material, which has been deliberated as a host for optical activation with various numbers of rare-earth ions to reveal different luminescence peaks of the activators [4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Sang

Lian

et al. 2020

Journal of Asian Ceramic Societies

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Ln(NO 3) 3 • 6H 2 O (Ln = Gd, Pr and Ce), urea, sodium sulfite (Na 2 SO 3) and carbon powder were used as the starting materials. The precursor was synthesized with Ln(NO 3) 3 • 6H 2 O (Ln = Gd, Pr and Ce) solutions and urea at 95 °C for 4 h, and then the Gd 2 O 2 S:Pr 3+ ,Ce 3+ phosphors were prepared by calcined the precursor (in inner crucible), Na 2 SO 3 (in middle crucible) and carbon powder (in outer crucible) at 1000 °C for 2 h in a sealed environment. The X-ray powder diffraction (XRD) results confirm that the as-synthesized Gd 2 O 2 S phase has high purity and without the presence of any impurities. The field emission scanning electron microscopy (FE-SEM) inspection shows the morphology of Gd 2 O 2 S:Pr 3+ ,Ce 3+ is hexagonal in shape and about 1 μm in size. The photoluminescence (PL) spectra under 301 nm ultraviolet (UV) light excitation shows a strong green emission at 513 nm. The quenching concentration occurs at Pr 3+ ions concentration of 0.2% and its corresponding Commission Internationle de L'Eclairage (CIE) coordinates is (0.0273, 0.7921). The decay lifetimes are τ 1 = 0.248 μs and τ 2 = 1.824 μs for the Gd 2 O 2 S:0.2%Pr 3+ ,Ce 3+ phosphor. The Gd 2 O 2 S:0.2%Pr 3+ ,Ce 3+ phosphor film has excellent performance in the light utilization and the charge-transfer capability under 270 nm UV light radiation.

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“…Lu et al came up with a novel strategy to synthesize Gd 2 O 2 S:Eu 3+ luminescent nanobelts. Thirumalai et al synthesized highly ordered single‐crystalline Gd 2 O 2 S:Eu 3+ nanostructures, such as nanotubes, nanorods, and nanoflowers by a simple and facile template‐assisted hydrothermal route . Hang et al prepared rod‐like morphology Gd 2 O 2 S:Eu 3+ phosphor with long‐lasting behavior by hydrothermal routine.…”

Section: Introductionmentioning

confidence: 99%

“…Thirumalai et al synthesized highly ordered single-crystalline Gd 2 O 2 S:Eu 3+ nanostructures, such as nanotubes, nanorods, and nanoflowers by a simple and facile template-assisted hydrothermal route. 28 Hang et al 29 prepared rod-like morphology Gd 2 O 2 S:Eu 3+ phosphor with long-lasting behavior by hydrothermal routine. However, few studies have been reported on the synthesis and luminescence properties of rare-earth ions-doped Gd 2 O 2 S nanophosphors with other distinctive morphologies, especially the columnar Gd 2 O 2 S:Eu 3+ nanophosphors.…”

mentioning

confidence: 99%

Solvothermal synthesis of columnar Gd₂O₂S:Eu³⁺ and a comparative study with columnar Gd₂O₃:Eu³⁺

Qian

Wang

et al. 2019

J Am Ceram Soc

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Columnar Gd2O2S:Eu3+ nanophosphors have been synthesized through solvothermal reaction and subsequent calcination process. The structure, morphology, and luminescence properties of samples were investigated via X‐ray diffraction (XRD), Fourier transform infra‐red (FT‐IR) spectra, UV‐vis absorption spectra, field emission scanning electron microscope (FE‐SEM), and photoluminescence (PL) spectra. The Judd‐Ofelt (J‐O) parameters of Gd2O2S:Eu3+ nanophosphors with different doping concentration were calculated by emission spectra to understand the symmetry, coordination environment, and luminescence behavior of Eu3+ ions in Gd2O2S matrix. In addition, the luminescence properties of columnar Gd2O2S:Eu3+ and Gd2O3:Eu3+ were compared in detail. The comparison results show that there are subtle differences in luminescence intensity, main peak position, luminescence color, and fluorescence lifetime between them, which are closely related to their different substrate's structure, including the band‐gap energy, crystallinity, and symmetry, etc.

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Preparation of highly ordered growth of single-crystalline Gd2O2S:Eu3+ nanostructures

Cited by 16 publications

References 34 publications

Luminescence property tuning of Yb³⁺-Er³⁺ doped oxysulfide using multiple-band co-excitation

Luminescence property tuning of Yb³⁺-Er³⁺ doped oxysulfide using multiple-band co-excitation

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Solvothermal synthesis of columnar Gd₂O₂S:Eu³⁺ and a comparative study with columnar Gd₂O₃:Eu³⁺

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Preparation of highly ordered growth of single-crystalline Gd2O2S:Eu3+ nanostructures

Cited by 16 publications

References 34 publications

Luminescence property tuning of Yb3+-Er3+ doped oxysulfide using multiple-band co-excitation

Luminescence property tuning of Yb3+-Er3+ doped oxysulfide using multiple-band co-excitation

Synthesis, characterization and formation mechanism of Gd2O2S:Pr3+,Ce3+ phosphors by sealed triple-crucible method

Solvothermal synthesis of columnar Gd2O2S:Eu3+ and a comparative study with columnar Gd2O3:Eu3+

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Luminescence property tuning of Yb³⁺-Er³⁺ doped oxysulfide using multiple-band co-excitation

Luminescence property tuning of Yb³⁺-Er³⁺ doped oxysulfide using multiple-band co-excitation

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Solvothermal synthesis of columnar Gd₂O₂S:Eu³⁺ and a comparative study with columnar Gd₂O₃:Eu³⁺