Figure 2: Surface evolution of SubPc film.
From: Growth and modelling of spherical crystalline morphologies of molecular materials

This film was continuously grown by GF-OVJP at evaporation temperature of 325 °C with dwell time durations of stationary nozzle above the substrate as indicated on the figures: (a) 2 min, (b) 4 min, (c) 6 min, (d) 8 min, (e) 12 min, (f) 16 min, (g) 12 min—enlarged, (h) 16 min—enlarged. Scale bar 1 μm. Alq3 film growth resulted in similar surface evolution (Supplementary Fig. 5).