Table 2. Thickness of the As-Prepared Sensor Films as a Function of the Volume of rGO–PEDOT/PSS–Nafion (0.5 wt %) Solutions for Developed 2 cm2 Casting Films using a Profilometer.
| film | volume of the solutions (μL) @ 2 cm2 | thickness (μm) |
|---|---|---|
| 1 | 100 | 0.52 |
| 2 | 200 | 1.13 |
| 3 | 300 | 2.20 |
| 4 | 400 | 3.80 |