| 摘要 |
Improved photocathodes are provided by a fabrication method including steps of wet chemically cleaning the photocathode emission surface (to reduce the level of cleaning-induced surface damage), two stage heat treatment (to complete the cleaning without desorbing nitrogen from the emission surface), followed by activation with Cs only, as opposed to Cs-O. The resulting photocathodes have improved performance (lifetime, brightness, efficiency) compared to conventional photocathodes, and are thus attractive candidates for demanding photocathode applications.
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