| Paper |
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| THPAB142 |
Optical and Surface Characterization of Alkali-Antimonide Photocathodes |
4037 |
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- P. Saha, O. Chubenko, G.S. Gevorkyan, A.H. Kachwala, S.S. Karkare, C.J. Knill
Arizona State University, Tempe, USA
- E.J. Montgomery, S. Poddar
Euclid Beamlabs, Bolingbrook, USA
- H.A. Padmore
LBNL, Berkeley, California, USA
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Alkali-antimonides, characterized by high quantum efficiency and low mean transverse energy in visible light, are excellent electron sources to drive x-ray free electron lasers, electron cooling and ultrafast electron diffraction applications etc. Existing studies of alkali-antimonides have focused on quantum efficiency and emittance, but information is lacking on the fundamental aspects of the electronic structure, such as the energy gap of the semiconductor and the density of defects as well as the overall nano-structure of the materials. We are, therefore, conducting photoconductivity measurements to measure fundamental semiconductor properties as well as using atomic force microscope (AFM) and kelvin probe force microscope (KPFM) to measure the nanostructure variations in structure and surface potential.
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Poster THPAB142 [1.211 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB142
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| About • |
paper received ※ 16 May 2021 paper accepted ※ 14 July 2021 issue date ※ 13 August 2021 |
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