Long-term stability of capped and buffered palladium-nickel thin films and nanostructures for plasmonic hydrogen sensing applications

Publikationstyp
Journal Article
Date Issued
2013-02-26
Sprache
English
Author(s)
Strohfeldt, Nikolai
Tittl, Andreas  
Giessen, Harald
TORE-URI
https://hdl.handle.net/11420/61997
Journal
Optical materials express  
Volume
3
Issue
2
Start Page
194
End Page
204
Citation
Optical Materials Express 2 (3): 194-204 (2013)
Publisher DOI
10.1364/OME.3.000194
Scopus ID
2-s2.0-84874124232
One of the main challenges in optical hydrogen sensing is the stability of the sensor material. We found and studied an optimized material combination for fast and reliable optical palladium-based hydrogen sensing devices. It consists of a palladium-nickel alloy that is buffered by calcium fluoride and capped with a very thin layer of platinum. Our system shows response times below 10 s and almost no short-term aging effects. Furthermore, we successfully incorporated this optimized material system into plasmonic nanostructures, laying the foundation for a stable and sensitive hydrogen detector.
DDC Class
600: Technology