Fig. 3. (A) Transient absorption spectra of a SnS as well as a SnS–P3HT layer on planar-TiO₂ 10 μs after pulsed excitation at 510 nm and (B) transient absorption kinetics of the same samples recorded at 1000 nm following excitation at 510 nm. Corresponding steady-state absorption spectra of the investigated samples are shown in the ESI† in Fig. S6.