Synthesis and properties of solution-processed Eu3+:BaY2F8

被引：25
作者：
Karbowiak, M
Mech, A
Bednarkiewicz, A
Strek, W
机构：
[1] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland
[2] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland
来源：
JOURNAL OF LUMINESCENCE | 2005年 / 114卷 / 01期
关键词：
luminescent properties; Judd-Ofelt theory;
D O I：
10.1016/j.jlumin.2004.11.004
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The structural and optical properties of solution-processed Eu3+:BaY2F8 were characterized and compared to those of the sample synthesized by a solid-state reaction method. Precipitated from solution Eu3+:BaY2F8 has the fluorite (CaF2) type of structure, which transforms completely into monoclinic form when powder is heated at 750 degrees C. This temperature is also sufficient for entire elimination of hydroxyl groups. The intensities of f-f emission transitions of EU3+ in BaY2F8 were analyzed in the frame of Judd-Ofelt model and the values of 1.23 x 10(-20) and 1.95 x 10(-20) cm(2) were determined for Omega(2) and Omega(4) intensity parameters. The experimental lifetimes of the D-5(0) and D-5(1) levels are equal to 8.4 and 2.3 ms, respectively. The quantum efficiency of Eu3+ in BaY2F8 was evaluated to be similar to 35%. (c) 2004 Elsevier B.V. All rights reserved.
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页码：1 / 8
页数：8
相关论文
共 24 条
[11]  
GREIS O, 1981, Z ANORG ALLG CHEM, V447, P133
[12]   INFRARED-PUMPED VISIBLE LASER [J].
JOHNSON, LF ;
GUGGENHEIM, HJ .
APPLIED PHYSICS LETTERS, 1971, 19 (02) :44-+
[13]   OPTICAL ABSORPTION INTENSITIES OF RARE-EARTH IONS [J].
JUDD, BR .
PHYSICAL REVIEW, 1962, 127 (03) :750-&
[14]   Structural and luminescent properties of nanostructured KGdF4:Eu3+ synthesised by coprecipitation method [J].
Karbowiak, M ;
Mech, A ;
Bednarkiewicz, A ;
Strek, W .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 380 (1-2) :321-326
[15]   Luminescence and energy transfer of the europium (III) tungstate obtained via the Pechini method [J].
Kodaira, CA ;
Brito, HF ;
Malta, OL ;
Serra, OA .
JOURNAL OF LUMINESCENCE, 2003, 101 (1-2) :11-21
[16]   UV and VUV optical excitations in wide band gap materials doped with rare earth ions: 4f-5d transitions [J].
Krupa, JC ;
Queffelec, M .
JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 250 (1-2) :287-292
[17]  
MCFARLANE RA, 1994, J OPT SOC AM B, V11, P971
[18]   Structural and luminescent properties of nano-sized NaGdF4: Eu3+ synthesised by wet-chemistry route [J].
Mech, A ;
Karbowiak, M ;
Kepinski, L ;
Bednarkiewicz, A ;
Strek, W .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 380 (1-2) :315-320
[19]  
NAKAMOTO K, 1978, INFRARED RAMAN SPECT, P227
[20]   INTENSITIES OF CRYSTAL SPECTRA OF RARE-EARTH IONS [J].
OFELT, GS .
JOURNAL OF CHEMICAL PHYSICS, 1962, 37 (03) :511-&
123