If the tunnel junction capacitance becomes larger, the amplitude of the I-V curve of single-electron transistor becomes smaller, but the period is unchanged.

We also studied the junction conductance-voltage characteristics as well as the influence of junction conductance on the junction capacitance measurements.

In the neutron radiation environment there occurs the change in C-V characteristics of the Tar-actor diodes. At the given bias the junction capacitance decreases with increase of neutron fluence.