Piezoelectrically Enhanced Photocathodes

TBMG-10852

09/01/2011

Abstract
Content

Doping of photocathodes with materials that have large piezoelectric coefficients has been proposed as an alternative means of increasing the desired photoemission of electrons. Treating cathode materials to increase emission of electrons is called “activation” in the art. It has been common practice to activate photocathodes by depositing thin layers of suitable metals (usually, cesium). Because cesium is unstable in air, fabrication of cesiated photocathodes and devices that contain them must be performed in sealed tubes under vacuum. It is difficult and costly to perform fabrication processes in enclosed, evacuated spaces. The proposed piezoelectrically enhanced photocathodes would have electron-emission properties similar to those of cesiated photocathodes but would be stable in air, and therefore could be fabricated more easily and at lower cost.

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Citation
"Piezoelectrically Enhanced Photocathodes," Mobility Engineering, September 1, 2011.
Additional Details
Publisher
Published
Sep 1, 2011
Product Code
TBMG-10852
Content Type
Magazine Article
Language
English