Abstract
The electrical characteristics of 4H-SiC pin diodes with 8H-type in-grown stacking faults are investigated. The pin diodes have epilayers with low Z1/2center concentration formed by using the carbon implantation process. The forward voltage drops of the diode with 8H-type in-grown stacking faults are larger than those of the diode without a 8H-type in-grown stacking fault. At room temperature, the differential on-resistance of the pin diode with 8H-type in-grown stacking faults is larger than the value calculated from donor concentration in the drift layer by using the current transportation model of the unipolar device. Meanwhile, the differential on-resistances of the pin diode with 8H-type in-grown stacking faults decrease with an increase in temperature and become smaller than the calculated value at temperature of more than 200 °C.
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