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NTD-Ge thermistor fabrication for cryogenic bolometer application

Aug 9, 2022, 5:10 PM
Oral report 粒子物理实验技术 Parallel Session II (5):Particle Detector Technology


Kangkang Zhao (University of Science and Technology of China)


Neutron Transmutation Doped Germanium have a very uniform distribution of dopants and can work as thermistor at ultra-low (10 mK) temperature when using Bolometric detection technique. NTD-Ge have played a critical role in many rare events searching experiments. We produced a batch of NTD-Ge samples by thermal neutron irradiation and fabricated several NTD-Ge thermistors. We did some fundamental studies such as annealing of radiation defects produced by fast reactor neutrons and carrier concentration using variable temperature Hall-effect to determine the properties of NTD-Ge. The resistance-temperature relationship measurements are to be carried out to characterize the NTD-Ge thermistor in the near future.

Primary author

Kangkang Zhao (University of Science and Technology of China)

Presentation materials