Thickness Effect on F8T2/C60 Bilayer Photovoltaic Devices
Figure 5
A log-log plot of the current density in dark times the C60 thickness by the square of the voltage across the whole device divided by the C60 thickness for three different values of the F8T2 thickness. All the linear fittings have angular coefficients equal to one, which characterize the Mott-Gurney law.
