Improved robustness of sequentially deposited potassium cesium antimonide photocathodes achieved by increasing the potassium content towards theoretical stoichiometry

Abstract Alkali antimonide semiconductor photocathodes are promising candidates for high-brightness electron sources for advanced accelerators, including free-electron lasers (FEL), due to their high quantum efficiency (QE), low emittance, and high temporal resolution. Two challenges with these phot...

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Bibliographic Details
Main Authors: Lei Guo, Keisuke Shiohara, Hisato Yamaguchi, Gaoxue Wang, Yuki Okabe, Masashi Nakatake, Shoichi Takakura, Masahiro Yamamoto, Shuichi Ogawa, Yoshifumi Takashima
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-025-87603-6
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