University of Illinois Urbana-Champaign

The Temperature Dependence of Optical Properties of Palladium in Hydrogen

King, Aaron J.

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https://hdl.handle.net/2142/46991

Description

Title
The Temperature Dependence of Optical Properties of Palladium in Hydrogen
Author(s)
King, Aaron J.
Contributor(s)
Goddard, Lynford
Issue Date
2010-05
Keyword(s)
  • sensors
  • gas sensing
  • palladium sensors
  • hydrogen sensing
Abstract
Many sensors for hydrogen use palladium as a sensing material due to its selective reaction with the gas. As Pd reacts with H2, its electrical and optical properties change in the process. The temperature of the system will influence the response time and magnitude due to changes in reaction time and diffusion depth of the gas into the sensing material for different temperatures. In this work, measurements are taken of the reflection power, using a broadband light source, from thin films of palladium for several gas concentrations and temperatures. These measurements are used to characterize the response time and magnitude of the change in optical properties, so that the performance of palladium based hydrogen sensors can be predicted and understood.
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/46991

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