Fig. 5
From: High Seebeck Coefficient of Porous Silicon: Study of the Porosity Dependence

Example of experimental data for the 46 % porosity sample. In a, the thermovoltage and the temperature difference versus time are depicted for the 46 % porosity sample. In b, the ΔV versus ΔT curve is plotted, from which S is determined by a linear fit to the data