Planar C plus Al co-implanted 5000V PiN diodes with an effective multistep
junction termination extension were desired, modelled and fabricated. The d
iode I-V characteristics measured at different temperatures along with the
multistep junction extension termination design dimensions are reported, sh
owing the realisation of a near-perfect edge termination and a record high
current density for the 29.33 mum 1 x 10(15)cm(-3) doped n(-) 4H-SiC drift
layer used in this study.