Fig. 5. Thermal characterization as a function of the deposition temperature of TPBi single layers.

The fictive temperature (red, left axis) as a thermal stability parameter and the onset of the glass transition (blue, right axis) as a kinetic stability parameter of 60- to 80-nm films of TPBi as a function of the substrate temperature. These parameters are extracted from the heat capacity curves performed using quasi-adiabatic fast scanning calorimetry, as described in Materials and Methods and fig. S5.