Dual-channel enhanced luminescence of double perovskite NaGdMgWO6:Eu3+ phosphor based on alternative excitation and delayed quenching

被引：73

作者：

Zhang, Le ^{[1
,2
]}

Liu, Quan ^{[3
]}

Ding, Nan ^{[3
]}

Yang, Hao ^{[1
,2
]}

Wang, Lixi ^{[3
]}

Zhang, Qitu ^{[3
]}

机构：

[1] Jiangsu Normal Univ, Sch Phys & Elect Engn, Xuzhou 221116, Peoples R China

[2] Jiangsu Normal Univ, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Peoples R China

[3] Nanjing Univ Technol, Coll Mat Sci & Engn, Nanjing 210009, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 642卷

基金：

中国国家自然科学基金;

关键词：

Double perovskite; Crystal symmetry; Concentration quenching; Phosphors; STATE LIGHTING APPLICATIONS; WHITE-LEDS; RED PHOSPHOR; A-SITE; PHOTOLUMINESCENCE; EU3+; PERFORMANCE; IONS;

D O I：

10.1016/j.jallcom.2015.04.109

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Series of Eu3+ substituted Na(Gd1 xEux)MgWO6 phosphors were successfully synthesized by a EDTA-citric acid complexing method. The crystal structure, doping site, morphology, and luminescent properties under different Eu3+ concentrations were investigated by XRD, Rietveld refinement, Raman spectra, FTIR, SEM and fluorescence spectra as well as Judd-Ofelt analysis and quenching theory. The phosphors had monoclinic double perovskite structure with space group C2/m, rock-salt ordering of B-site (Mg/W) and layered ordering of A-site (Na/Gd/Eu). The redshift of Raman T-2g(1) mode proved Eu3+ ions had uniformly substituted into A-site. The rare alternative excitation appeared in phosphors that the charge transfer band (CTB) altered from O-W into O-Eu and the strongest excitation altered from CTB into f-f transition of Eu3+. The quenching concentration for hypersensitive D-5(0)-F-7(2) transition of Eu3+ reached up to 50.0 mol%, while both the intensity ratio of D-5(0)-F-7(2)/D-5(0)-F-7(1) and Judd-Ofelt parameter Omega(2) reached the maximum. These two channels of alternative excitation and delayed concentration quenching dually enhanced the luminescence of NaGdMgWO6:Eu3+ phosphor. It is a potential red material for NUV and blue LED chips. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：45 / 52

页数：8

共 30 条

[11] Synthesis and characterization of new AA'BWO6 perovskites exhibiting simultaneous ordering of A-site and B-site cations [J].

King, Graham ;

Thimmaiah, Srinivasa ;

Dwivedi, Akansha ;

Woodward, Patrick M. .

CHEMISTRY OF MATERIALS, 2007, 19 (26) :6451-6458

[12] Magnetic and structural properties of NaLnMnWO6 and NaLnMgWO6 perovskites [J].

King, Graham ;

Wayman, Lora M. ;

Woodward, Patrick M. .

JOURNAL OF SOLID STATE CHEMISTRY, 2009, 182 (06) :1319-1325

[13] A-site cation ordering in AA′BB′O6 perovskites [J].

Knapp, MC ;

Woodward, PM .

JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (04) :1076-1085

[14] Photoluminescence of Eu3+-, Tb3+-, Dy3+- and Tm3+-doped transparent GeO2-TiO2-K2O glass ceramics [J].

Lakshminarayana, G. ;

Qiu, Jianrong ;

Brik, M. G. ;

Kityk, I. V. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (33)

[15]

Lei F, 2008, J OPTOELECTRON ADV M, V10, P158

[16] Single-narrow-band red upconversion fluorescence of ZnO nanocrystals codoped with Er and Yb and its achieving mechanism [J].

Liu, Yunxin ;

Yang, Qibin ;

Xu, Changfu .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (06)

[17] Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance [J].

Oh, Ji Hye ;

Yang, Su Ji ;

Do, Young Rag .

LIGHT-SCIENCE & APPLICATIONS, 2014, 3

[18] First-order Raman spectra of AB′1/2B′′1/2O3 double perovskites -: art. no. 214307 [J].

Prosandeev, SA ;

Waghmare, U ;

Levin, I ;

Maslar, J .

PHYSICAL REVIEW B, 2005, 71 (21)

[19]

Pust P, 2014, NAT MATER, V13, P891, DOI [10.1038/NMAT4012, 10.1038/nmat4012]

[20] FLUORESCENCE OF EUROPIUM(III) IN A FLUORIDE GLASS CONTAINING ZIRCONIUM [J].

REISFELD, R ;

GREENBERG, E ;

BROWN, RN ;

DREXHAGE, MG ;

JORGENSEN, CK .

CHEMICAL PHYSICS LETTERS, 1983, 95 (02) :91-94

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