Figure 3
From: Balancing Hole and Electron Conduction in Ambipolar Split-Gate Thin-Film Transistors
XPS analysis of the PDPP3T. (a) C 1s core level spectra. (b) S 2p core level spectra. (c) O 1s core level spectra. Blue circle: as-received. Red circle: vacuum annealing at 100 °C. (d) XPS atomic ratio variations for C 1s, S 2p, and O 1s when the PDPP3T film was measured after the air exposure and the vacuum annealing.
