Fig. 3: Element redistribution upon spin coating.

(Top) Spin-coating routine. (Bottom) Schematic of distribution of Pb and S elements observed for 0 s, 25 s, and 40 s spin-coating times, without and with CB dripping.

(Top) Spin-coating routine. (Bottom) Schematic of distribution of Pb and S elements observed for 0 s, 25 s, and 40 s spin-coating times, without and with CB dripping.