Solution-phase deposition of SnS thin films via thermo-reduction of SnS2

Here, we demonstrate a novel solution-based route for deposition of tin monosulfide (SnS) thin films, which are emerging, non-toxic absorber materials for low-cost and large-scale PV applications via thermo-reducing Sn(IV) to Sn(II). Upon optimizing the morphology of the SnS layer via adding a seed layer, the SnS-based hybrid solar cells show promising photocurrent conversion efficiencies.