Cooperative energy transfer in Gd2(MoO4)3:Tb,Yb nanophosphors

Author

Liang, X.F. ; Zhang, Q.Y. ; Chen, D.D. ; Ji, X.H. ; Zhai, J.W.

Author_Institution

Inst. of Opt. Commun. Mater., South China Univ. of Technol., Guangzhou

fYear

2008

fDate

24-27 March 2008

Firstpage

105

Lastpage

108

Abstract

In this paper, we report an efficient cooperative energy transfer in Gd₂(MoO₄)₃:Tb³⁺,Yb³⁺ nanophosphors. Powder samples of Gd₂(MoO₄)₃:Tb³⁺,Yb³⁺ were prepared by means of combustion synthesis. The products were analyzed by means of X-ray diffraction, scanning electron microscopy and fluorescence spectrometer. The dependence of Yb³⁺ concentration on the visible- and NIR-emission, decay lifetime and quantum efficiency from the Gd₂(MoO₄)₃:Tb³⁺,Yb³⁺ phosphors have been investigated. The optimal quantum efficiency has been found to be 185%. Our results show that in principle an efficiency luminescent converter that, in an ideal case, converts visible photons into two or more NIR photons.

Keywords

X-ray diffraction; combustion synthesis; fluorescence; gadolinium compounds; nanostructured materials; nanotechnology; phosphors; photoluminescence; powders; scanning electron microscopy; terbium; ytterbium; Gd₂(MoO₄)₃:Tb³⁺,Yb³⁺; NIR photons; X-ray diffraction; combustion synthesis; energy transfer; fluorescence spectrometer; luminescence; nanophosphors; near infrared emission spectra; powder samples; quantum efficiency; scanning electron microscopy; visible photons; Energy exchange; Nanoelectronics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoelectronics Conference, 2008. INEC 2008. 2nd IEEE International

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1572-4

Electronic_ISBN

978-1-4244-1573-1

Type

conf

DOI

10.1109/INEC.2008.4585447

Filename

4585447