Synthesis, thermoluminescence and defect centres in Eu3+ doped Y2O3 nanophosphor for gamma dosimetry applications

被引：25

作者：

Shivaramu, N. J. ^{[1
]}

Lakshminarasappa, B. N. ^{[2
]}

Nagabhushana, K. R. ^{[3
]}

Singh, Fouran ^{[4
]}

Swart, H. C. ^{[1
]}

机构：

[1] Univ Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa

[2] RG Univ Knowledge Technol, RK Valley, Dept Phys, Idupulapaya 516330, Vempalli, India

[3] PES Univ, Dept Phys S&H, Bangalore 560085, Karnataka, India

[4] Inter Univ Accelerator Ctr, POB 10502, New Delhi 110067, India

来源：

MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 11期

关键词：

Y2O3:Eu3+; gamma irradiation; electron spin resonance; thermoluminescence; LUMINESCENCE PROPERTIES; PHOTOLUMINESCENCE; PHOSPHORS; PARAMETERS; BAND;

D O I：

10.1088/2053-1591/aa99ec

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Europium doped Y2O3 nanophosphors have been prepared by the solution combustion method. The prepared nanophosphors were characterized by powder x-ray diffraction (XRD). XRD revealed that the cubic phase with crystallite size in the range 25-37 nm formed. Surface morphology of the samples was studied by field emission scanning electron microscopy and the particles were observed as spherical in nature, having an average size similar to 30 nm. The electron spin resonance spectrum of the irradiated nanophosphor exhibited a signal having peaks at g = 2.1646 and 2.0035 which are attributed to V-and O-2(-) defect centers, respectively. Thermoluminescence (TL) emission showed a strong red (611 nm) emission at 417 K. The prominent TL glow (417 K) peak exhibited low fading, good reproducibility and linear dose response in the range 0.01-2.0 kGy. This behavior is favorable for TL dosimetry applications. The Y2O3: Eu3+ nanophosphor has prodigious potential as a dosimeter to be use for monitoring high dose ionizing radiation fields.

引用

页数：12

共 39 条

[1]

[Anonymous], THERMOLUMINESCENCE S

[2]

[Anonymous], 2003, HAND BOOK THERMOLUMI

[3]

[Anonymous], NANOTECHNOLOGY

[4]

[Anonymous], J LUMIN

[5]

[Anonymous], 1999, PHOSPHOR HDB

[6] OSL signal of lithium fluoride and its relationship with TL glow-curves [J].

Bilski, Pawel ;

Marczewska, Barbara ;

Twardak, Anna ;

Mandowska, Ewa ;

Mandowski, Arkadiusz .

RADIATION MEASUREMENTS, 2014, 71 :61-64

[7] High sensitivity thermoluminescence dosimetry [J].

Bos, AJJ .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2001, 184 (1-2) :3-28

[8]

Chen R., 1997, THEORY THERMOLUMINES, DOI DOI 10.1142/9789812830890_0007

[9] Effect of Eu3+ concentration on photoluminescence and thermoluminescence behavior of YBO3:Eu3+ phosphor [J].

Dubey, Vikas ;

Kaur, Jagjeet ;

Agrawal, Sadhana ;

Suryanarayana, N. S. ;

Murthy, K. V. R. .

SUPERLATTICES AND MICROSTRUCTURES, 2014, 67 :156-171

[10] Fundamental optical constants of Nd-doped Y2O3 ceramic and its scintillation characteristics [J].

Fukabori, Akihiro ;

Chani, Valery ;

Pejchal, Jan ;

Kamada, Kei ;

Yoshikawa, Akira ;

Ikegami, Takayasu .

OPTICAL MATERIALS, 2011, 34 (02) :452-456

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