We demonstrate a facile method to fabricate Ag-Sb₂S₃ nanoporous plasmonic absorbers on plastic, crystalline, and glassy substrates. Our lithography-free method exploits the immiscibility of Ag and Sb₂S₃ to control the surface morphology of the absorbing structure. We experimentally and theoretically show that the nanoporous structure exhibits a high absorption across the visible and near infrared spectrum, which is achieved by the coalescence of surface/bulk plasmons and the Sb₂S₃ semiconductor bandgap absorption. The absorptance is independent of polarisation over a broad range of incident angles. We found that the Ag-Sb₂S₃ nanoporous structure is an effective absorber on both flexible and non-flexible substrates, and the simple deposition of the Ag-Sb₂S₃ nanoporous structure facilitates fabrication over a 100 mm diameter wafer. Our work shows that plasmonic nanostructures can be fabricated at room temperature on an industrial scale using sputtering, which is already used to commercially produce photovoltaic cells. We foresee these inexpensive absorbers being applied to wearable light-harvesting systems, bio-sensing, and display technologies.

我们展示了一种在塑料，晶体和玻璃态基底上制造Ag-Sb ₂ S ₃纳米多孔等离子体吸收剂的简便方法。我们的无光刻方法利用了Ag和Sb ₂ S ₃的不混溶性来控制吸收结构的表面形态。我们从实验上和理论上表明，纳米孔结构在可见光和近红外光谱上显示出高吸收性，这是通过表面/本体等离激元的聚结和Sb ₂ S ₃半导体带隙吸收而实现的。吸收率与入射角的宽范围内的偏振无关。我们发现Ag-Sb ₂ S ₃纳米多孔结构是在柔性和非柔性衬底上的有效吸收剂，并且Ag-Sb ₂ S ₃纳米多孔结构的简单沉积促进了在直径为100mm的晶片上的制造。我们的工作表明，可以在室温下使用溅射在工业规模上制造等离激元纳米结构，该溅射已被用于商业生产光伏电池。我们预见到，这些廉价的吸收器将应用于可穿戴的光收集系统，生物传感和显示技术。