Glass - Back to the Future!

Presenting Author:
Lothar Wondraczek

article posted 23 March 2016

Lothar Wondraczek holds the Chair of Glass Chemistry at the University of Jena, and is also director at its Center for Energy and Environmental Chemistry and at the Otto Schott Institute of Materials Research. Before moving to Jena in 2012, he held positions at the University of Erlangen-Nuremberg (2008-2012) and with Corning, S.A. (2005-2008). Is work has been recognized with various awards, among them an ERC grant in 2016 and the W.A. Weyl and Gottardi-Awards in 2013.

Palladium in glass

Lothar Wondraczek & Marek Sierka
Otto Schott Institute of Materials Research, Friedrich Schiller University Frauenhofer Straße 6, D-07743 Jena, Germany

Extending plasmonic functionality towards the ultraviolet calls for alternatives to gold, copper or silver nano-precipitates in glass. One such option is palladium, which provides a high resonance frequency and, potentially, plasmonic activity in the UV-C spectral range to enable glass-based blue and UV plasmonic resonators. In this talk, structural incorporation and optical properties of Pd2+ in UV-transparent glasses, its reduction to Pd0 and precipitation into metallic particles will be presented and discussed on the basis of experimental and ab initio quantum chemical data.

Orbital diagram of [Pd(H2O)4]2+ as a model for Pd2+ in metaphosphate glasses, metallic Pd nanoprecipitate generated through Pd2+ reduction, and plasmonic resonance as a function of particle size for Pd in Sr-metaphosphate.