Isothermal charging/discharging currents

S/oiv Time-Domain Dielectric Spectroscopy Isothermal Charging/Discharging Currents... 

In most cases, the measurements are carried out isothermally in the frequency domain and the terms dielectric spectroscopy (DS) and dielectric relaxation spectroscopy (DRS) are then used. Other terms frequently used for DRS are impedance spectroscopy and admittance spectroscopy. Impedance spectroscopy is usually used in connection with electrolytes and electrochemical studies, whereas admittance spectroscopy often refers to semiconductors and devices. Isothermal measurements in the time domain are often used, either as a convenient tool for extending the range of measurements to low frequencies (slow time-domain spectroscopy, dc transient current method, isothermal charging-discharging current measurements) or for fast measurements corresponding to the frequency range of about 10 MHz - 10 GHz (time-domain spectroscopy or time-domain reflectometry). Finally, TSDC is a special dielectric technique in the temperature domain, which will be discussed in Section 2.2. 

The concentration dependence for ij as discussed above was confirmed for these photocurrent transient measurements, and a Langmuir adsorption isotherm according to Eq. 3a was successfully used to fit the data for the photoreduction of benzoquinone at the surface of PcZn [44] and for the photooxidation of Ce " at the surface of FisPcZn [129]. In these studies quite remarkable differences were seen in the dependence or independence of charging and discharging currents on the... 

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