Issue 4, 2011
From the journal:

Journal of Materials Chemistry

Synthesis, characterization and optical studies on lanthanide-doped CdS quantum dots: new insights on CdS → lanthanide energy transfer mechanisms†

José Planelles-Aragó,*a   Eloisa Cordoncillo,a   Rute A. S. Ferreira,b   Luís D. Carlosb  and  Purificación Escribano*a  

* Corresponding authors

a Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, Castellón, Spain
E-mail: jplanell@qio.uji.es, cordonci@qio.uji.es, escriban@qio.uji.es
Fax: +34 964728214
Tel: +34 964728247

b Department of Physics, CICECO, University of Aveiro, Aveiro, Portugal
E-mail: lcarlos@ua.pt, rferreira@ua.pt
Fax: +351 234378197
Tel: +351 234 370946

Abstract

Eu3+-Doped CdS hexagonal nanocrystals (NCs), with an average size of ∼4 nm, have been prepared through a simple methodology based on the direct precipitation of CdS NCs using 1-thioglycerol as a capping molecule. Steady-state and time-resolved photoluminescence studies (14–300 K) reveal an effective CdS NCs-to-Eu3+ energy transfer process involving surface localized states and mediated by a thermally activated exchange mechanism. Furthermore, the analysis of the optical data also points out the presence of two distinct Eu3+ local coordination sites with different relaxation kinetics and attributed to lattice-bound and surface-bound centres. The 5D0 lifetime values are longer than those reported previously for sol–gel derived Eu3+-doped CdS NCs.

Graphical abstract: Synthesis, characterization and optical studies on lanthanide-doped CdS quantum dots: new insights on CdS → lanthanide energy transfer mechanisms

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C0JM03188G
Article type
Paper
Submitted
23 Sep 2010
Accepted
27 Oct 2010
First published
23 Nov 2010

J. Mater. Chem., 2011,21, 1162-1170

Permissions

Request permissions

Synthesis, characterization and optical studies on lanthanide-doped CdS quantum dots: new insights on CdS → lanthanide energy transfer mechanisms

J. Planelles-Aragó, E. Cordoncillo, R. A. S. Ferreira, L. D. Carlos and P. Escribano, J. Mater. Chem., 2011, 21, 1162 DOI: 10.1039/C0JM03188G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements