Table of Contents
SRX Materials Science
Volume 2010, Article ID 101747, 7 pages
http://dx.doi.org/10.3814/2010/101747
Research Article

Structural and Optical Characterisation of an Erbium/Ytterbium Doped Hybrid Material Developed via a Nonhydrolytic Sol-Gel Route

1Optical Sensors Laboratory, National Centre for Sensor Research, School of Physical Sciences, Dublin City University, Dublin 9, Ireland
2Groupe d'Etude des Semiconducteurs, Université de Montpellier 2, UMR-CNRS 5650, Place Eugéne Bataillon, 34090 Montpellier, France

Received 28 July 2009; Revised 1 October 2009; Accepted 1 October 2009

Copyright © 2010 M. Oubaha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper proposes the development and structural characterisation of an Er3+/Yb3+ doped hybrid organic-inorganic material synthesised by a nonhydrolytic sol-gel process. By using a pumping laser diode at 980 nm, a typical Er3+ luminescence has been recorded in the near infrared region (1.53–1.55 μm). However, the detected fluorescence was particularly weak compared to that generally observed in pure mineral materials, suggesting the occurrence of strong quenching due to multiphonon relaxation processes. To understand this behaviour, structural characterisation of both of the matrix and the local environment of Er3+ ions were conducted employing infrared spectroscopy, nuclear magnetic resonance, electron paramagnetic resonance, and neutron scattering. These studies showed that the major phenomenon competing with the Er3+ fluorescence is intimately associated to the strong vibrational modes of the organic species that involve multiphonon relaxation processes, resulting in energy dissipation within the host matrix.