Negative Capacitance Analysis of a Statistically Significant Sample of Discrete Diodes

In this work, capacitance analysis of a statistically significant sample of 30 diodes were conducted for a wide voltage range. For voltages below the built-in bulk potential, a well-known mathematical model exists. This work mainly focusses on potentials above the built-in bulk potential which is not widely understood. This was done using a direct measurement method, through the use of a Capacitance Voltage meter. The results show that at higher biasing voltages and higher oscillating frequencies, these discrete diodes from the same batch exhibit negative capacitance. This work provides insight into the possibility of implementing a negative capacitance in circuits under certain conditions to lower the overall capacitance, which can have a significant effect on many circuit types (light current and heavy current circuits).