Luminescence properties of Eu2+ and Ce3+ ions in calcium lithio-germanate Li2CaGeO4

被引：9

作者：

Berezovskaya, I. V. ^{[1
]}

Efryushina, N. P. ^{[1
]}

Seifullina, I. I. ^{[2
]}

Martsinko, E. E. ^{[2
]}

Zadneprovski, B. I. ^{[3
]}

Stryganyuk, G. B. ^{[4
,5
]}

Voloshinovskii, A. S. ^{[4
]}

Levshov, S. M. ^{[1
]}

Dotsenko, V. P. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, AV Bogatsky Physicochem Inst, UA-65080 Odessa, Ukraine

[2] Mechnikov Odessa Natl Univ, UA-65082 Odessa, Ukraine

[3] Cent Res & Dev Inst Chem & Mech, Moscow 115487, Russia

[4] Ivan Franko Natl Univ Lviv, UA-79005 Lvov, Ukraine

[5] DESY, HASYLAB, D-22607 Hamburg, Germany

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 06期

关键词：

Powders: chemical preparation; Spectroscopy; Optical properties; Functional applications; ELECTRONIC-STRUCTURE; PHOTOLUMINESCENCE; PHOSPHORS; YELLOW; SPECTROSCOPY; ULTRAVIOLET; CRYSTAL; BLUE;

D O I：

10.1016/j.ceramint.2013.02.015

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Eu2+-doped Li2CaGeO4 samples have been prepared by the solid state reaction method and by thermolysis of the complex precursor. It was shown that Eu2+ ions in Li2CaGeO4 exhibit an intense emission with a maximum at 473 nm. The Stokes shift (820 cm(-1)) and full-width at half-maximum (1415 cm(-1)) of the emission band are close to those of the Eu2+ emission in Li2CaSiO4. Values of the crystal field splitting and the centroid shift of the Ce3+ 5d configuration in Li2CaGeO4 were also determined and compared with those of Ce3+ ions in Li2CaSiO4. Although the spectral positions of the Ce3+ lowest excitation band for Li2CaRO4 (R=Si, Ge) are practically the same, the magnitudes of the Ce3+ crystal field splitting appeared to be unexpectedly very different. This effect is tentatively attributed to a strong distortion of the calcium site in Li2CaSiO4 caused by the presence of the trivalent lanthanide ion. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：6835 / 6840

页数：6

共 21 条

[1] Relation between Eu2+ and Ce3+ f ⇆ d-transition energies in inorganic compounds [J].

Dorenbos, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (27) :4797-4807

[2] 4f-5d spectroscopy of Ce3+ in CaBPO5, LiCaPO4 and Li2CaSiO4 [J].

Dorenbos, P ;

Pierron, L ;

Dinca, L ;

van Eijk, CWE ;

Kahn-Harari, A ;

Viana, B .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (03) :511-520

[3] 5d-level energies of Ce3+ and the crystalline environment.: III.: Oxides containing ionic complexes -: art. no. 125117 [J].

Dorenbos, P .

PHYSICAL REVIEW B, 2001, 64 (12)

[4] Luminescent properties of Eu2+ and Ce3+ ions in strontium litho-silicate Li2SrSiO4 [J].

Dotsenko, V. P. ;

Levshov, S. M. ;

Berezovskaya, I. V. ;

Stryganyuk, G. B. ;

Voloshinovskii, A. S. ;

Efryushina, N. P. .

JOURNAL OF LUMINESCENCE, 2011, 131 (02) :310-315

[5]

Gard J. A., 1973, Journal of Solid State Chemistry, V7, P422, DOI 10.1016/0022-4596(73)90171-0

[6] Li2SrSiO4:Eu2+ phosphor prepared by the Pechini method and its application in white light emitting diode [J].

He, Hong ;

Fu, Renli ;

Wang, Hai ;

Song, Xiufeng ;

Pan, Zhengwei ;

Zhao, Xinran ;

Zhang, Xueliang ;

Cao, Yongge .

JOURNAL OF MATERIALS RESEARCH, 2008, 23 (12) :3288-3294

[7] White light emission from blue and near ultraviolet light-emitting diodes precoated with a Sr3SiO5:Ce3+, Li+ phosphor [J].

Jang, Ho Seong ;

Jeon, Duk Young .

OPTICS LETTERS, 2007, 32 (23) :3444-3446

[8]

Jian-Xin M., 2010, J LUMIN, V130, P1320

[9] Electronic Structure and Luminescence Properties of Yellow-Emitting Ca2GeO4:Ce3+,Li+ Phosphor for White Light-Emitting Diodes [J].

Jiang, Ziqiang ;

Wang, Yuhua ;

Ci, Zhipeng ;

Jiao, Haiyan .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (10) :J317-J320

[10] LUMINESCENCE OF Eu2+ IONS IN ALKALINE EARTH DILITHIOSILICATES [J].

Levshov, S. M. ;

Berezovskaya, I. V. ;

Efryushina, N. P. ;

Vdovenko, S. I. ;

Kovalevskaya, I. P. ;

Dotsenko, V. P. .

JOURNAL OF APPLIED SPECTROSCOPY, 2012, 79 (01) :70-75

← 1 2 3 →