Highly efficient inorganic-organic heterojunction solar cells based on SnS-sensitized spherical TiO2 electrodes.

All-solid-state inorganic-organic heterojunction solar cells (HSCs) were designed and fabricated using earth-abundant element, non-toxic, low-cost SnS-sensitized mesoporous spherical TiO(2) films under ambient conditions using a solution-processable, simple, and convenient fabrication technique. SnS-HSCs show a promising photovoltaic performance, with an efficiency of 2.8% and a significantly high V(OC) of 0.85 V.