We report experimental data and modeling results based on device physi
cs and circuit parameters for the spontaneous firing patterns for sili
con p-i-n structures at 4.2 K controlled by a constant current source.
The model provides insights into the sensitivity of the pulsing rate
and explains the wide range of behavior observed. The knowledge on the
effect of these parameters on pulsing is critical for designing unifo
rm arrays, which will have a major impact on applications such as infr
ared detectors and neural net models. The model will also serve as the
first step towards obtaining high temperature pulsing arrays using qu
antum well structures.