Hydrothermal formation and characteristics of rare-earth niobate phosphors and solid solutions between YNbO4 and TbNbO4

被引:22
作者
Hirano, Masanori [1 ]
Dozono, Hayato [1 ]
机构
[1] Aichi Inst Technol, Fac Engn, Dept Appl Chem, Toyota 4700392, Japan
关键词
Oxides; Chemical synthesis; Microstructure; Optical properties; PHOTOLUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; COMBUSTION SYNTHESIS; LUMINESCENCE; NANOCRYSTALS; TB3+; CHEMISTRY; GREEN; SIZE;
D O I
10.1016/j.matchemphys.2013.10.025
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Monoclinic fergusonite-type niobate, YNbO4:Tb3+ and complete solid solutions with luminescent properties in the YNbO4-TbNbO4 system were directly formed as nanocrystals from the precursor solutions of NbCl5, TbCl3, and YCl3 under hydrothermal conditions at 240 degrees C. The niobate nanocrystals possessed distinguishing feature of ellipsoidal morphology. The optical band gap of the as-prepared samples, Y1-xTbxNbO4, x = 0-1.0, decreased from 3.7 to 2.9 eV as the terbium concentration increased from x = 0 to 1.0. The photoluminescence spectra of the as-prepared nanocrystals containing terbium are responsible for the characteristic blue (490 nm) and green (545 nm) luminescence, associated with D-5(4) -> F-7(6) and D-5(4) -> F-7(5) transitions, respectively. The strongest emission bands in the green spectral domain corresponding to D-5(4) -> F-7(5) transition of Tb3+ are located at 545 and 550 nm under excitation at 240 nm Xe lamp. By heat treatment at 1300 degrees C, the luminescence intensity of the as-prepared solid solution x = 0.10 that presented the highest photoluminescence intensity increased more than 8 times as high as that before heat treatment. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:860 / 866
页数:7
相关论文
共 44 条
[1]   A new molecular precursor route for the synthesis of Bi-Y, Y-Nb and Bi-doped Y-Nb oxides at moderate temperatures [J].
Bayot, D. A. ;
Dupont, A. M. ;
Devillers, Michel M. .
JOURNAL OF SOLID STATE CHEMISTRY, 2007, 180 (03) :1141-1148
[2]   OPTICAL-PROPERTIES OF MANGANESE-DOPED NANOCRYSTALS OF ZNS [J].
BHARGAVA, RN ;
GALLAGHER, D ;
HONG, X ;
NURMIKKO, A .
PHYSICAL REVIEW LETTERS, 1994, 72 (03) :416-419
[3]  
Blasse G., 1994, LUMINESCENT MAT, P1, DOI [10.1007/978-3-642-79017-1_1, DOI 10.1007/978-3-642-79017-1_1, 10.1007/978-3-642-79017-11, DOI 10.1007/978-3-642-79017-11]
[4]   Study of TL glow curves of YPO4 double doped with lanthanide ions [J].
Bos, Adrie J. J. ;
Dorenbos, Pieter ;
Bessiere, Aurelie ;
Lecointre, Aurelie ;
Bedu, Melanie ;
Bettinelli, Marco ;
Piccinelli, Fabio .
RADIATION MEASUREMENTS, 2011, 46 (12) :1410-1416
[5]   LUMINESCENCE AND ENERGY-TRANSFER IN YTTRIUM NIOBATE (YNBO4) [J].
BUTH, AH ;
BLASSE, G .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1981, 64 (02) :669-676
[6]   Mixed-valence manganites [J].
Coey, JMD ;
Viret, M ;
von Molnár, S .
ADVANCES IN PHYSICS, 1999, 48 (02) :167-293
[7]  
DAWSON WJ, 1988, AM CERAM SOC BULL, V67, P1673
[8]   Combustion synthesis and photoluminescence of Tb3+ doped LaAlO3 nanophosphors [J].
Dhahri, A. ;
Horchani-Naifer, K. ;
Benedetti, A. ;
Enrichi, F. ;
Ferid, M. ;
Riello, P. .
OPTICAL MATERIALS, 2013, 35 (06) :1184-1188
[9]   Lanthanide level location in transition metal complex compounds [J].
Dorenbos, P. ;
Krumpel, A. H. ;
van der Kolk, E. ;
Boutinaud, P. ;
Bettinelli, M. ;
Cavalli, E. .
OPTICAL MATERIALS, 2010, 32 (12) :1681-1685
[10]   A three-color, solid-state, three-dimensional display [J].
Downing, E ;
Hesselink, L ;
Ralston, J ;
Macfarlane, R .
SCIENCE, 1996, 273 (5279) :1185-1189