High resolution spectroscopy of activation energies and trap depths using differential sampling

Differential sampling is the advanced version of thermal sampling (TS) which eliminates the TS disadvantages such as, time consumption, limited resolution and precision and the need of thermal cycles, which might produce unwanted structural changes. From the model calculation and from the experimental data, we find in the DS-spectra of A_s vs. T_s and of A_s vs. In t_s a low activation energy A_s at short times or low temperatures, and a high activation energy at long times or high T´s. DS quantify the beneficial effect of physical aging.