Lathanide-doped hybrid organic-inorganic nanocomposites

Bruno Viana; Eloisa Cordoncillo; Clotilde Philippe; Clement Sanchez; F. Javier Guaita; Purificiation Escribano

doi:10.1117/12.384330

2 May 2000 Lathanide-doped hybrid organic-inorganic nanocomposites

Bruno Viana, Eloisa Cordoncillo, Clotilde Philippe, Clement Sanchez, F. Javier Guaita, Purificiation Escribano

Proceedings Volume 3943, Sol-Gel Optics V; (2000) https://doi.org/10.1117/12.384330
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

Sol-gel matrices have been investigated for some years as potential matrices for rare earth luminescence. The design of sol-gel matrices inside which the hydroxyl content can be minimized and/or inside which the rare earth is protected via complexation or encapsulation is desirable to avoid the RE³⁺ luminescence quenching. We have investigated the Nd³⁺ Sm³⁺, Dy³⁺, Er³⁺ and Tm³⁺ optical properties in siloxane-zirconium hybrid matrices prepared at room temperature. In these hydrophobic matrices, RE³⁺ fluorescence is always observed but lifetimes and quantum yields are strongly dependent on the synthetic procedure. By using the reducing power of the hydridosilanes precursors, it is also possible to prepare hybrid materials with cations in different valence states. The in situ formation of hydrogen, provided by the cleavage of the Si-H bonds during hydrolysis and condensation reactions, reduces the europium and cerium in Eu²⁺ and Ce³⁺ leading to a broad visible emission. In addition to this emission, a blue emission of the sol-gel matrices under UV excitation is also observed.

Citation Download Citation

Bruno Viana, Eloisa Cordoncillo, Clotilde Philippe, Clement Sanchez, F. Javier Guaita, and Purificiation Escribano "Lathanide-doped hybrid organic-inorganic nanocomposites", Proc. SPIE 3943, Sol-Gel Optics V, (2 May 2000); https://doi.org/10.1117/12.384330

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available