The impact of the charge barrier height on Germanium (Ge) detectors with amorphous-Ge contacts for light dark matter searches

@article{Wei2020TheIO,
  title={The impact of the charge barrier height on Germanium (Ge) detectors with amorphous-Ge contacts for light dark matter searches},
  author={W.-Z. Wei and R. Panth and J. Liu and H. Mei and D. Mei and G. Wang},
  journal={The European Physical Journal C},
  year={2020},
  volume={80},
  pages={1-10}
}
Germanium (Ge) detectors with ability of measuring a single electron–hole (e–h) pair are needed in searching for light dark matter (LDM) down to the MeV scale. We investigate the feasibility of Ge detectors with amorphous-Ge (a-Ge) contacts to achieve the sensitivity of measuring a single e-h pair, which requires extremely low leakage current. Three Ge detectors with a-Ge contacts are used to study the charge barrier height for blocking electrons and holes. Using the measured bulk leakage… Expand
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