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Hydrogen-induced electrical and optical switching in Pd capped Pr nanoparticle layers
Volume 31 Issue 3 June 2008 pp 225-231
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https://www.ias.ac.in/article/fulltext/boms/031/03/0225-0231 -
Keywords
Praseodymium nanoparticles ;switchable mirror ;electrical and optical properties. -
Abstract
In this study, modification in the properties of hydrogen-induced switchable mirror based on Pr nanoparticle layers is reported. The reversible changes in hydrogen-induced electrical and optical properties of Pd capped Pr nanoparticle layers have been studied as a function of hydrogenation time and compared with the conventional device based on Pd capped Pr thin films. Faster electrical and optical response, higher optical contrast and presence of single absorption edge corresponding to Pr trihydride state in hydrogen loaded state have been observed in the case of nanoparticle layers. The improvement in the electrical and optical properties have been explained in terms of blue shift in the absorption edge due to quantum confinement effect, larger number of interparticle boundaries, presence of defects, loose adhesion to the substrate and enhanced surface to volume atom ratio at nanodimension.
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Author Affiliations
- Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016, India
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Dates
- Published
- June 2008
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Bulletin of Materials Science
Volume 47, 2024
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