Alkali azide based growth of high quantum efficiency photocathodes

Luca Cultrera, Mark Brown, Siddharth Karkare, William Schaff, Ivan Bazarov, Bruce Dunham

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The authors report on successful growth of bialkali photocathode based on CsK2Sb using the alkali metal vapors generated by thermal decomposition of alkali azides. Details about the ultrahigh vacuum growth system and the procedure used are provided. The final quantum efficiency of the photocathode under illumination with 532 nm laser is 9.6%. This value is comparable to the largest ones obtained in our previous experiments using commercial dispensers, indicating that alkali azides are a viable alternative.

Original languageEnglish (US)
Article number031211
JournalJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume32
Issue number3
DOIs
StatePublished - May 2014
Externally publishedYes

Fingerprint

Photocathodes
photocathodes
Quantum efficiency
quantum efficiency
alkalies
dispensers
Dispensers
metal vapors
Ultrahigh vacuum
Alkali metals
alkali metals
ultrahigh vacuum
thermal decomposition
Pyrolysis
Lighting
illumination
Vapors
Lasers
lasers
Experiments

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Alkali azide based growth of high quantum efficiency photocathodes. / Cultrera, Luca; Brown, Mark; Karkare, Siddharth; Schaff, William; Bazarov, Ivan; Dunham, Bruce.

In: Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, Vol. 32, No. 3, 031211, 05.2014.

Research output: Contribution to journalArticle

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