Nd3+-doped perovskite nanosheets with NIR luminescence

被引：8

作者：

Funatsu, Asami ^{[1
,2
]}

Taniguchi, Takaaki ^{[1
,2
]}

Tokita, Yousuke ^{[1
,2
]}

Murakami, Tomoaki ^{[1
,2
]}

Nojiri, Yuki ^{[1
,2
]}

Matsumoto, Yasumichi ^{[1
,2
]}

机构：

[1] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto 8608555, Japan

[2] Japan Sci & Technol Agcy JST, CREST, Chiyoda Ku, Tokyo 1020075, Japan

来源：

MATERIALS LETTERS | 2014年 / 114卷

基金：

日本科学技术振兴机构;

关键词：

Nanosheet; Near-infrared; Luminescence; Perovskite; Nanocomposites; PHOTOLUMINESCENCE; EXFOLIATION;

D O I：

10.1016/j.matlet.2013.09.090

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Exfoliation of layered materials into ultrathin nanosheets introduces a new cost-effective and environmentally safe fabrication method for novel nanostructured devices. In the present study, we have developed for the first time inorganic oxide nanosheets with near-infrared (NIR) luminescence properties. KLa1-xNdxNb2O7 (x=0.025, 0.05, 0.1, 0.2, or 03) powders obtained by a solid state reaction were exfoliated into single-layer metal oxide nanosheets with approximately 1.7 rim thickness by osmotic swelling with tetrabutylammonium cations, followed by the protonation of KLa1-xNdxNb2O7. We observed strong coupling of high-energy OH vibration with the Nd3+ energy levels upon protonation and exfoliation steps because of the extremely thin nature of oxide nanosheet-layers. Colloidal oxide nanosheets with an optimized Nd-doping concentration yielded detectable NIR luminescence due to F-4(3/2)-I-4(11/2) (Nd3+) radiative transitions, which opens possible application of these oxide nanosheets as bioimaging probes and bioanalytical sensors. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：29 / 33

页数：5

共 19 条

[1] THE OPTICS OF HUMAN-SKIN [J].