Facile synthesis and characterization of sheet-like Y2O3:Eu3+ microcrystals

Lu, Zhouguang; Qian, Dong; Tang, Yougen

doi:10.1016/j.jcrysgro.2004.11.409

Cited by 22 publications

(15 citation statements)

References 17 publications

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“…Various methods are also employed in the preparation of Y 2 O 3 :Eu 3+ 1D nanostructures, such as nanotubes fabricated through a surfactant assembly mechanism [24]; nanowires induced by template-assisted growth in AAO [25]; nanorods prepared by the hydrothermal method [26]; nanobelts obtained by a simple hydrothermal process and a following calcinations of the intermediate product [27]. 2D Y 2 O 3 :Eu 3+ nanostructures such as nanosheet have also been successfully prepared by the hydrothermal method [28]. Meanwhile there are also reports on the spherical particles by using spray pyrolysis method [29], urea homogeneous precipitation [30], and Pechini sol-gel process [31].…”

Section: Introductionmentioning

confidence: 99%

3D flower-like Y2O3:Eu3+ nanostructures: Template-free synthesis and its luminescence properties

Zeng

Tang

et al. 2007

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

3D flower-like Y2O3:Eu3+ nanostructures: Template-free synthesis and its luminescence properties

Zeng

Tang

et al. 2007

Journal of Colloid and Interface Science

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“…Many techniques have been employed to prepare nanosized yttria doped with lanthanide ions, as for example thermal process [8,9], combustion method [10,11], spray pyrolysis [12], wet chemical synthesis [13]. Nanometric structures of rare-earth doped powders give ceramics Y 2 O 3 interesting optical properties and potential applications in functional microdevices.…”

Section: Introductionmentioning

confidence: 99%

Growth and characterization of Nd, Yb – yttrium oxide nanopowders obtained by sol‐gel method

Rzepka¹,

Ryba‐Romanowski

Diduszko

et al. 2007

Cryst. Res. Technol.

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Nanopowders of Y 2 O 3 pure, doped and codoped by Nd 3+ , Yb 3+ were obtained by sol-gel method. Solution with ethylene glycol was choosed as the proper solution where crystallites of powder with Nd and Yb dopants had the same size. Finally the one-phased compounds of Y 2 O 3 doped 0.5 at% Nd and 1, 2 or 4 at% Yb were obtained. Grain growth and their morphology were investigated in various temperature and time of heating. The changes of crystallite sizes and lattice constants in relation to the heating time and temperature for the composition Y 2 O 3 doped 0.5 at% Nd and 2 at% Yb are presented. Y 2 O 3 containing 0,5 at% of Nd exhibits intense luminescence bands centered at 920 nm, 1100 nm and 1360 nm whereas a single band at about 1020 nm appears in samples co-doped with neodymium and ytterbium. Luminescence spectra recorded did not depend on the sample preparation procedure and size of grains. OH impurity affects critically the relaxation dynamics of luminescent ion in nanopowders.

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“…Which are detrimental to effective emission and thus result in reduced luminescence yield. [30][31][32] The sample synthesized by refluxing using hexane and ethylene glycol mixed solvent showed the strongest emission than the sample synthesized using ethylene glycol and the sample prepared via co-precipitation method followed by calcinations at 800 C for 5 h. As we already explained the formation mechanism of precursor materials, during the crystallization of precursor material ethylene glycol and hexane showed obvious effect on the morphology and facilitate the growth of dispersed particles without agglomeration and it was observed, when ethylene glycol and hexane mixed solvents were used in the synthesis. In contrast, the sample prepared by refluxing in ethylene glycol showed high PL intensity after calcination at 1000 C for 1 h in air, than the reference sample (5 mol% Eu 3+ Y 2 O 3 prepared via co-precipitation calcinations method ( Fig.…”

Section: Luminescent Property Of Eu 3+ :Y 2 O 3 Nanocrystalsmentioning

confidence: 99%

Solvothermal Synthesis and Characterization of Eu3+ Doped Y2O3 Nanocrystals

Devaraju

Yin²,

Sato³

2010

J. Nanosci. Nanotech.

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A solvothermal refluxing system containing of ethylene glycol and ethylene glycol-hexane mixed organic solvents were used to prepare Eu3+ doped Y2O3 nanocrystals via solvothermal refluxing reaction-calcinations method. In the presence of ethylene glycol, the reaction temperature required for the preparation of Y(OH)3 precursor crystal is 170 degrees C but in ethylene glycol-hexane mixed organic solvents, the synthesis temperature was reduced to 70 degrees C. The Y(OH)3 precursor particles were calcinated at 600-1200 degrees C in air to prepare nanosized Eu3+ doped Y2O3 red phosphor. The as prepared particles by refluxing in ethylene glycol followed by calcination showed 20-60 nm in diameter. For the characterization, XRD, TG-DTA, EDS, FTIR, TEM and PL measurements were employed. The as prepared sample by refluxing in ethylene glycol-hexane mixed solvents exhibited strong red emission around 610 nm under 254 nm xenon light excitation and photoluminescence property was compared with reference sample (5 mol% Eu3+:Y2O3) prepared via conventional co-precipitation method followed by calcinations at 800 degrees C for 5 h in air.

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Facile synthesis and characterization of sheet-like Y2O3:Eu3+ microcrystals

Cited by 22 publications

References 17 publications

3D flower-like Y2O3:Eu3+ nanostructures: Template-free synthesis and its luminescence properties

3D flower-like Y2O3:Eu3+ nanostructures: Template-free synthesis and its luminescence properties

Growth and characterization of Nd, Yb – yttrium oxide nanopowders obtained by sol‐gel method

Solvothermal Synthesis and Characterization of Eu<SUP>3+</SUP> Doped Y<SUB>2</SUB>O<SUB>3</SUB> Nanocrystals

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