Japanese researchers build tin(II) sulfide solar cell with high open-circuit voltage

The single-junction cell has a conversion efficiency of only 1.4%, but its creators claim it may easily reach between 4 and 5%, when properly optimized. The device also showed a remarkable open-circuit voltage of 360?mV, which the scientists described as the highest VOC value ever reached for SnS-based heterojunction solar cells.Tin(II) sulfide (SnS) has emerged in recent years as a promising semiconductor material for solar cells. It is abundant in nature, non-toxic, and can be supplied at a low cost. Furthermore, it has a near-optimal direct bandgap of about 1.3 eV, a high level of environmental ...

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