Eu3+ Activated Y2O3 Red Phosphor Monospheres: Size-controlled Processing and Luminescence Property

doi:10.15541/jim20160207

Abstract

Abstract:

Monodispersed (Y, Eu)₂O₃ spheres (110-550 nm in diameter) were calcined from precursors synthesized via homogeneous precipitation. Systematic characterizations of the products were carried out by XRD, FE-SEM, TEM, and PLE/PL analyses. Large spherical particles were resulted via seeded growth and NH₄NO₃ addition. Calcining the basic carbonate precursor at 600℃ yielded cubic (Y, Eu)₂O₃. The spherical shape and excellent dispersion of the precursor particles were largely retained to the oxides after annealing up to 1000℃. The polycrystalline (Y, Eu)₂O₃spheres exhibited typical red emission at 615 nm (the ⁵D₀→⁷F₂ transition of Eu³⁺) under UV excitation at 242 nm. The phosphors showed a substantially size-dependent luminescent behavior. Shorter fluorescence lifetime (1.15-1.57 ms), decreased asymmetry factor (I(⁵D₀→⁷F₂)/I(⁵D₀→⁷F₁)) of luminescence, and enhanced luminescent intensity were observed along with increasing particle size.

Key words: monospheres, size-controlled processing, luminescent property, yttria

CLC Number:

TB34

QU Jiao, ZHU Qi, Li Ji-Guang, SUN Xu-Dong. Eu³⁺Activated Y₂O₃ Red Phosphor Monospheres: Size-controlled Processing and Luminescence Property[J]. Journal of Inorganic Materials, 2016, 31(10): 1087-1093.

Figures/Tables 9

Table 1 UBHP conditions for precursor synthesis

Sample ID	Ln³⁺ (Ln=Y, Eu) conentration /(mol·L^-1)	Urea concentration /(mol·L^-1)	NH₄NO₃ concentration /(mol·L^-1)	Urea/Ln³⁺ molar ration, R
S1	0.015	0.3	0	20
S2	0.015	0.5	0	33.3
S3	0.015	0.3 (adding in three times: 0.1, 0.1, 0.1)	0	20
S4	0.015	0.5 (adding in three times: 0.15, 0.15, 0.20)	0	33.3
S5	0.015	0.5	0.015	33.3
S6	0.015	0.5	0.045	33.3

Fig. 1 FE-SEM images of precursors S1-S6 (a-f)

Fig. 2 XRD patterns of the products calcined from precursor S6 at different temperatures

Fig. 3 Crystallite size of the products calcinated from precursor S6 at different temperatures

Fig. 4 FE-SEM images of the products calcinated from precursor S6 at (a) 800℃, (b) 1000℃, (c) 1300℃; (d-e) are FE-SEM and TEM micrographs of the products calcinated from precursors S1 and S4, at 1000℃ for 4 h respectively

Fig. 5 XRD patterns of the (Y0.95Eu0.05)2O3 oxides calcined from different precursors at 1000℃ for 4 h

Fig. 6 (a) PLE and (b) PL spectra of the (Y0.95Eu0.05)2O3 oxides calcined from precursor S6 at various temperatures

Fig. 7 PL spectra of the (Y0.95Eu0.05)2O3 oxides with various particle sizes

Fig. 8 Fluorescence decay curves for 615 nm emission of three typical samples calcined from different precursors at 1000℃

References 18

[1]	LI J G, LI X D, SUN X D, et al.Uniform colloidal spheres for (Y1-xGdx)2O3 (x=0-1): formation mechanism, compositional impacts, and physicochemical properties of the oxides.Chemistry of Materials, 2008, 20(6): 2274-2281.
[2]	LI J G, LI X D, SUN X D, et al.Monodispersed colloidal spheres for uniform Y2O3: Eu3+ red-phosphor particles and greatly enhanced luminescence by simultaneous Gd3+ doping.Journal of Physical Chemistry C, 2008, 112(31): 11707-11716.
[3]	LI J G, ZHU Q, LI X D, et al.Colloidal processing of Gd2O3: Eu3+ red phosphor monospheres of tunable sizes: solvent effects on precipitation kinetics and photoluminescence properties of the oxides.Acta Materialia, 2011, 59(9): 3688-3696.
[4]	ZHU Q, LI J G, LI X D, et al.Monodisperse colloidal spheres for (Y, Eu)2O3 red-emitting phosphors: establishment of processing window and size-dependent luminescence behavior.Science and Technology of Advanced Materials, 2011, 12(5): 055001.
[5]	KANG Y C, ROH H S, PARK S B.Preparation of Y2O3: Eu phosphor particles of filled morphology at high precursor concentrations by spray pyrolysis.Advanced Materials, 2000, 12(6): 451-453.
[6]	KANG Y C, ROH H S, PARK S B.Sodium carbonate flux effects on the luminescence characteristics of (Y0.5Gd0.5)2O3: Eu phosphor particles prepared by spray pyrolysis.Journal of the American Ceramic Society, 2001, 84(2): 447-449.
[7]	WANG H, YU M, LIN C K, et al.Synthesis and luminescence properties of monodispersed spherical Y2O3: Eu3+@SiO2 particles with core-shell structure.Journal of Physical Chemistry C, 2007, 111(30): 11223-11230.
[8]	MATIJEVIC E, HSU W P.Preparation and properties of monodispersed colloidal particles of lanthanide compounds: I. Gadolinium, europium, terbium, samarium, and cerium (III).Journal of Colloid and Interface Science, 1987, 118(2): 506-523.
[9]	AIKEN B, HSU W P, MATIJEVIC E.Preparation and properties of monodispersed colloidal particles of lanthanide compounds: III, Yttrium (III) and mixed Yttrium(III)/Cerium(III) systems.Journal of the American Ceramic Society, 1988, 71(10): 845-853.
[10]	SORDELET D, AKINC M.Preparation of spherical, monosized Y2O3 precursor particles.Journal of Colloid and Interface Science, 1988, 122(1): 47-59.
[11]	ZHU Q, XIONG M, LI J G, et al.(Y, Tb, Eu)2O3 monospheres for highly fluorescent films and transparent hybrid films of color tunable emission.RSC Advances, 2015, 5: 36122-36128.
[12]	ZONG L, XU P F, DING Y, et al.Y2O3: Yb3+/Er3+ hollow spheres with controlled inner structures and enhanced upconverted photoluminescence.Small, 2015, 11(23): 2768-2733.
[13]	MIAO H, JI R, HU X Y, et al.Y2O3: Eu3+/Tb3+ spherical particles based anti-reflection and wavelength conversion bi-functional films: synthesis and application to solar cells.Journal of Alloys and Compounds, 2015, 629: 74-79.
[14]	LV R, YANG P, HE F, et al.Hollow structure Y2O3: Yb/Er-CuxS nanospheres with controllable size for simultaneous chemo/photothermal therapy and bioimaging.Chemistry of Materials, 2015, 27(2): 483-496.
[15]	ZHU Q, LI J G, MA R, et al.Well-defined crystallites autoclaved from the nitrate/NH4OH reaction systemas the precursor for (Y, Eu)2O3 red phosphor: crystallization mechanism, phase and morphology control, and luminescent property.Journal of Solid State Chemistry, 2012, 192: 229-237.
[16]	ZHU Q, LI J G, LI X D, et al.Morphology-dependent crystallization and luminescence behavior of (Y, Eu)2O3red phosphors.Acta Materialia, 2009, 57(20): 5975-5985.
[17]	PENG H, SONG H, CHEN B, et al.Temperature dependence of luminescent spectra and dynamics in nanocrystalline Y2O3: Eu3+.Journal of Chemical Physics, 2003, 118(7): 3277-3282.
[18]	CHRISTENSEN H P, GABBE D R, JENSSEN H P.Fluorescence lifetimes for neodymium-doped yttrium aluminum garret and yttrium-oxide powders.Physical Review B, 1982, 25(3): 1467-1473.

Eu³⁺Activated Y₂O₃ Red Phosphor Monospheres: Size-controlled Processing and Luminescence Property

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