Defects and symmetry influence on visible emission of Eu doped nanoceria

被引：57

作者：

Babu, Suresh ^{[1
]}

Schulte, Alfons ^{[2
]}

Seal, Sudipta ^{[1
]}

机构：

[1] Univ Cent Florida, Adv mat Proc & Anal Ctr, Nanosci Technol Ctr & Mech Mat & Aerosp Engn, Orlando, FL 32816 USA

[2] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 12期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2904627

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Europium doped cerium oxide particles of 10 nm were synthesized by room temperature chemical precipitation technique and annealed at 500 and 900 C to study its effect on luminescence. X-ray photoelectron spectroscopic result shows an increase in Ce3+ concentration from 20% to 23% on Eu doping but decreases to 8% on annealing. Raman studies show a progressive blueshift from 461 to 464 cm(-1) due to local symmetry ordering with temperature. Emission intensity varies with the wavelength of excitation and observed transitions indicate the presence of Eu3+ in different symmetry environments. (C) 2008 American Institute of Physics.

引用

收藏

页数：3

相关论文

共 15 条

[1] Rare earth nanoparticles prevent retinal degeneration induced by intracellular peroxides [J].

Chen, Junping ;

Patil, Swanand ;

Seal, Sudipta ;

McGinnis, James F. .

NATURE NANOTECHNOLOGY, 2006, 1 (02) :142-150

[2] Surface valence transition in trivalent Eu insulating compounds observed by photoelectron spectroscopy [J].

Cho, EJ ;

Oh, SJ .

PHYSICAL REVIEW B, 1999, 59 (24) :R15613-R15616

[3] Determination of free carrier density and space charge layer variation in nanocrystalline In3+ doped tin oxides using Fourier transform infrared spectroscopy [J].

Drake, Christina ;

Deshpande, Sameer ;

Seal, Sudipta .

APPLIED PHYSICS LETTERS, 2006, 89 (14)

[4] Structure and luminescent properties of CeO2:: rare earth (RE = Eu3+ and Sm3+) thin films [J].

Fujihara, S ;

Oikawa, M .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (12) :8002-8006

[5] A new set of electronegativity scale for trivalent lanthanides [J].

Li, Keyan ;

Xue, Dongfeng .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2007, 244 (06) :1982-1987

[6] Synthesis and photoluminescence of CeO2:Eu3+ phosphor powders [J].

Liu, Xiaohua ;

Chen, Shaojun ;

Wang, Xiaodong .

JOURNAL OF LUMINESCENCE, 2007, 127 (02) :650-654

[7] RAMAN AND X-RAY STUDIES OF CE1-XREXO2-Y, WHERE RE=LA, PR, ND, EU, GD, AND TB [J].

MCBRIDE, JR ;

HASS, KC ;

POINDEXTER, BD ;

WEBER, WH .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (04) :2435-2441

[8] Enhanced photoemission in dispersed Eu2O3 nanoparticles in amorphous Al2O3 [J].

Mohanty, P ;

Ram, S .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (12) :3021-3025

[9] Role of trivalent La and Nd dopants in lattice distortion and oxygen vacancy generation in cerium oxide nanoparticles [J].

Patil, Swanand ;

Seal, Sudipta ;

Guo, Yu ;

Schulte, Alfons ;

Norwood, John .

APPLIED PHYSICS LETTERS, 2006, 88 (24)

[10] Europium probe for estimation of site symmetry in glass films, glasses and crystals [J].

Reisfeld, R ;

Zigansky, E ;

Gaft, M .

MOLECULAR PHYSICS, 2004, 102 (11-12) :1319-1330