Effect of the microstructure on concentration quenching in heavily doped Tb2O3-ZrO2 nanoparticles embedded in silica

被引：11

作者：

Riello, P.

Bucella, S.

Cristofori, D.

Benedetti, A.

Polloni, R.

Trave, E.

Mazzoldi, P.

机构：

[1] Univ Ca Foscari, Dipartimento Chim Fis, I-30170 Venice, Italy

[2] INSTM, I-30170 Venice, Italy

[3] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 431卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.09.083

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：

Tb(3+)-doped ZrO(2) samples were prepared both as pure compounds and as a nanocomposite made up of sub-5 nm crystalline nanoparticles developed in an amorphous silica matrix. The materials were characterized by using HRTEM, XRD and luminescence spectroscopy. The amount of terbium crystallized into the zirconia lattice was determined by the Rietveld method. A significant improvement of the life time was observed in the nanocomposite with respect to the pure lanthanide doped zirconia particles despite of the very high (about 20 mol%) rare earth concentration developed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：326 / 331

页数：6

共 19 条

[1] Terbium(III) doped silica-xerogels: effect of aluminium(III) co-doping [J].