Ultrafast ID-VG Technique for Reliable Cryogenic Device Characterization
Pragya Shrestha, Akin Akturk, Brian Hoskins, Advait Madhavan, Jason Campbell
An in-depth understanding of the transient operation of devices at cryogenic temperatures remains experimentally elusive. However, the impact of these transients has recently become important in efforts to develop both electronics to support quantum information science as well as cryogenic high-performance computing. In this paper, we examine the charge trapping dynamics of devices operating at cryogenic temperatures by using cryogenic fast-IV measurements. Careful calibrations allow for the acquisition of accurate fast I-V and transconductance transients down to 20 ns for devices operating at or below 12 K. The combination of fast measurements and cold temperatures shifts the observable measurement window to reveal non-equilibrium charge trapping/de-trapping time dynamics of both fast and slow traps in high-k devices. The trap charging dynamics was monitored via shifts in both threshold voltage and transconductance which revealed fast-state contribution which is unique to device operation at these cryogenic conditions.
, Akturk, A.
, Hoskins, B.
, Madhavan, A.
and Campbell, J.
Ultrafast ID-VG Technique for Reliable Cryogenic Device Characterization, IEEE Journal of the Electron Devices Society, [online], https://doi.org/10.1109/JEDS.2023.3259823, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932679
(Accessed December 2, 2023)