The DLTS signal induced by a back contact barrier is studied both theoretically and through
experiments on model circuits. A nonideal back contact is modeled either by a resistor and a
capacitor, or by a germanium diode inversely polarized with respect to the junction diode.
Depending on the back contact properties, this may result in a positive or negative
capacitance transient. For these model circuits the capacitance transient time constants and
amplitudes are studied as a function of voltage pulse height and compared with signals …