Luminescence investigations on LiAl5O8:Tb3+ nanocrystalline phosphors

被引：28

作者：

Pitale, Shreyas S. ^{[1
]}

Kumar, Vinay ^{[1
]}

Nagpure, Indrajit ^{[1
]}

Ntwaeaborwa, O. M. ^{[1
]}

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

机构：

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

来源：

CURRENT APPLIED PHYSICS | 2011年 / 11卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

LiAl5O8; Spinel; Nanophosphors; Photoluminescence; Rare earth ions; EPR;

D O I：

10.1016/j.cap.2010.08.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tb3+-doped porous LiAl5O8 nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 +/- 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of D-5(4) -> F-7(5) of the Tb3+ ion at 543 nm under 241 nm excitation. The intense 4f-4f transitions of Tb3+ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：341 / 345

页数：5

共 16 条

[1]

[Anonymous], [No title captured]

[2] Thermoluminescence and optical studies on X-irradiated terbium-doped potassium bromide crystals [J].

Bangaru, S. ;

Muralidharan, G. ;

Brahmanandhan, G. M. .

JOURNAL OF LUMINESCENCE, 2010, 130 (04) :618-622

[3]

Blasse G., 1983, REV INORG CHEM, V5, P319

[4] Identification of defect centres using TSL, PL, OSL and ESR studies in LiAlO2 based phosphors [J].

Dhabekar, Bhushan ;

Raja, E. Alagu ;

Menon, Sanjeev ;

Rao, T. K. Gundu ;

Kher, R. K. ;

Bhatt, B. C. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2008, 41 (11)

[5] Exchange and crystal field effects on the 4fn-15d levels of Tb3+ [J].

Dorenbos, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (36) :6249-6268

[6] Synthesis and characterization of Co2+-doped lithium aluminum spinel nanocrystals [J].

Duan, ML ;

Yuan, DR .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2005, 351 (27-29) :2348-2351

[7] Unit cell refinement from powder diffraction data: The use of regression diagnostics [J].

Holland, TJB ;

Redfern, SAT .

MINERALOGICAL MAGAZINE, 1997, 61 (01) :65-77

[8] Luminescence properties of Tb3+:Y3Al5O12 nanocrystallites prepared by the sol-gel method [J].

Hreniak, D ;

Strek, W ;

Mazur, P ;

Pazik, R ;

Zabkowska-Waclawek, M .

OPTICAL MATERIALS, 2004, 26 (02) :117-121

[9] Emission properties of GdOBr:: Ce3+ and Tb3+ phosphors [J].

Kam, CH ;

Buddhudu, S .

MATERIALS LETTERS, 2002, 54 (5-6) :337-342

[10]

KAWAMURA Y, 1992, J NUCL SCI TECHNOL, V29, P436, DOI [10.3327/jnst.29.436, 10.1080/18811248.1992.9731549]

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