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Characterisation of Pb thin films prepared by the nanosecond pulsed laser deposition technique for photocathode application
Università del Salento, Italy.
Università del Salento, Italy.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0003-3277-1945
Istituto Nazionale di Fisica Nucleare, Italy.
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2015 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 579, 50-56 p.Article in journal (Refereed) Published
Abstract [en]

Pb thin films were prepared by the nanosecond pulsed laser deposition technique on Si (100) and polycrystalline Nb substrates for photocathode application. As the photoemission performances of a cathode are strongly affected by its surface characteristics, the Pb films were grown at different substrate temperatures with the aim of modifying the morphology and structure of thin films. An evident morphological modification in the deposited films with the formation of spherical grains at higher temperatures has been observed. X-ray diffraction measurements showed that a preferred orientation of Pb (111) normal to the substrate was achieved at 30 °C while the Pb (200) plane became strongly pronounced with the increase in the substrate temperature. Finally, a Pb thin film deposited on Nb substrate at 30 °C and tested as the photocathode showed interesting results for the application of such a device in superconducting radio frequency guns.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 579, 50-56 p.
Keyword [en]
Lead; Thin films; Pulsed laser deposition; Metallic photocathodes
National Category
Condensed Matter Physics
URN: urn:nbn:se:liu:diva-115145DOI: 10.1016/j.tsf.2015.02.033ISI: 000352219700008OAI: diva2:793977
Available from: 2015-03-09 Created: 2015-03-09 Last updated: 2015-05-12Bibliographically approved

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