Dark Current Calculation

device
photodetector

#1

I was wondering how does DEVICE calculate Dark current in PDs. What parameters does it take into account. does it take into account the Trap density and energy or surface leakage?.


#2

The dark current in a PD comes from the different recombination mechanisms in the device. The semiconductor material models supported by DEVICE allows the modeling of various types of recombination such as trap-assisted (SRH), auger, radiative, band-to-band, impact ionization, and surface recombination. The KB pages describing the semiconductor models of DEVICE have more details on these different models: Material model - Semiconductors and Material interface. It is up to the user to decide whether to use all of the models or a selection of them.