Antimony sulfide (Sb₂S₃) holds great promise for optoelectronic and photovoltaic applications, attributed to its optimal bandgap (1.5–2.2 eV) and unique physicochemical properties. Notably, one-dimensional single-crystalline Sb₂S₃ demonstrates exceptional charge transport capabilities due to its directional transport properties and significantly reduced grain boundaries. In this work, we present the controlled synthesis of Sb₂S₃ microtubes through a hydrothermal reaction process utilizing ethylenediaminetetraacetic acid as a structure-directing agent. These microtubes, characterized by lengths of up to 230 μm and diameters of approximately 8 μm, exhibit excellent crystal quality and smooth surfaces, facilitating their integration into device fabrication processes. The resulting single Sb₂S₃ microtube-based photodetector device demonstrates broadband visible photodetection capabilities, featuring a high responsivity (82 A/W), an external quantum efficiency of 1.3 × 10⁴%, short rise/decay times during switching (9.8 ms/9.2 ms), and a high detectivity of 7.6 × 10¹⁰ Jones. Furthermore, the device exhibits responsiveness across the monochromatic light spectrum ranging from 350 to 800 nm, with a particularly notable switching ratio of 82.2 observed at 722 nm.

中文翻译：

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用于高性能宽带可见光电检测的单晶 Sb2S3 微管


硫化锑 (Sb ₂ S ₃ ) 由于其最佳带隙 (1.5–2.2 eV) 和独特的物理化学性质，在光电和光伏应用中具有广阔的前景。值得注意的是，一维单晶Sb ₂ S ₃由于其定向传输特性和显着减少的晶界而表现出优异的电荷传输能力。在这项工作中，我们利用乙二胺四乙酸作为结构导向剂，通过水热反应过程控制合成Sb ₂ S ₃微管。这些微管的长度可达 230 μm，直径约为 8 μm，具有优异的晶体质量和光滑的表面，有助于将其集成到器件制造工艺中。由此产生的单 Sb ₂ S ₃微管光电探测器器件展示了宽带可见光电探测能力，具有高响应度 (82 A/W)、1.3 × 10 ⁴ % 的外部量子效率、开关期间较短的上升/衰减时间 (9.8 ms) /9.2 ms)，探测灵敏度高达 7.6 × 10 ¹⁰ Jones。此外，该器件在 350 至 800 nm 的单色光谱范围内表现出响应能力，在 722 nm 处观察到的开关比特别显着，为 82.2。