Antimony selenosulfide, Sb₂(S,Se)₃, has attracted attention over the last few years as a light-harvesting material for photovoltaic technology owing to its phase stability, earth abundancy and low toxicity. However, the lack of a suitable material processing approach to obtain Sb₂(S,Se)₃ films with optimal optoelectronic properties and morphology severely hampers prospects for efficiency improvement. Here we demonstrate a hydrothermal approach to deposit high-quality Sb₂(S,Se)₃ films. By varying the Se/S ratio and the temperature of the post-deposition annealing, we improve the film morphology, increase the grain size and reduce the number of defects. In particular, we find that increasing the Se/S ratio leads to a favourable orientation of the (Sb₄S(e)₆)_n ribbons (S(e) represents S or Se). By optmizing the hydrothermal deposition parameters and subsequent annealing, we report a Sb₂(S,Se)₃ cell with a certified 10.0% efficiency. This result highlights the potential of Sb₂(S,Se)₃ as an emerging photovoltaic material.

硒化锑锑Sb ₂（S，Se）₃在过去几年中由于其相稳定性，地球丰度和低毒性而作为光伏技术的光收集材料备受关注。然而，缺乏获得具有最佳光电性能和形态的Sb ₂（S，Se）₃膜的合适的材料加工方法，严重阻碍了效率提高的前景。在这里，我们演示了一种水热法来沉积高质量的Sb ₂（S，Se）₃电影。通过改变硒/硫比和沉积后退火的温度，我们改善了膜的形貌，增加了晶粒尺寸并减少了缺陷数量。特别地，我们发现，提高Se / S比率会导致（Sb ₄ S（e）₆）_n条碳带（S（e）代表S或Se）的良好取向。通过优化水热沉积参数并随后进行退火，我们报告了Sb ₂（S，Se）₃电池，其认证效率为10.0％。该结果突出了Sb ₂（S，Se）₃作为新兴光伏材料的潜力。