Optical and electrical properties of hydrogenated yttrium nanoparticles
I. Physikalisches Institut 1A der RWTH Aachen, D-52056
Corresponding author: a firstname.lastname@example.org
Published online: 15 September 2001
We studied the effect of hydrogen in yttrium nanoparticles on a quartz substrate, using optical spectroscopy and electrical resistance measurements. Pulsed laser deposition is used to obtain the Y clusters in an UHV environment. We show, that these clusters are highly sensitive to monoatomic H1 produced from ambient hydrogen gas pressures, ranging from 10-5 to 50 mbar with our experimental arrangement. The changes of optical and electrical properties due to the chemical reaction within the particles are sufficient to consider this material as a possible sensor for low concentrations of hydrogen.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 73.63.Bd – Nanocrystalline materials / 78.66.-w – Optical properties of specific thin films
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001