Temperature and Light Induced Effects on the Capacitance of 4H-SiC Schottky Photodiodes

The capacitance plays a key role in determining the timing performances of a detector. To date, this parameter has never been fully investigated in the study of SiC photodiodes electro-optical characteristics. In this paper, we report on the capacitance dependence of interdigitated 4H-SiC Schottky photodiodes on different operating parameters like reverse bias, temperature, light irradiance and illumination wavelength.