Realistic simulation of reverse characteristics of 4H-SiC power diode

This paper presents a methodology to simulate the reverse characteristics of realistic 4H-SiC pn junctions. The physical bases behind methodology of the simulation have been analyzed. The extensive collection of reported 4H-SiC pn junction diode data formed the basis of calibration of SYNOPSYS MEDICI for 4H-SiC pn junction simulation. Relevant parameters in the trap and photogeneration models are modified for realistic simulations. Motivation and justification of the modifications are presented. A universally applicable model parameter set for simulation of the reverse characteristics of practical 4H-SiC pn junction is proposed and verified against reported independent data not needed in the calibration step.