2D layered material Bi 2 O 2 Se nanosheets, due to its high carrier mobility, near-ideal subthreshold swing, and high air-stability, which have shown great potential for applications in high-performance field-effect transistors and photodetector. Here, we have been successfully synthesized Bi 2 O 2 Se nanosheets via a facile one-step hydrothermal method. The Bi 2 O 2 Se nanosheets were characterized by scanning electron microscopy (SEM), Raman spectra and X-ray diffraction (XRD) patterns, which confirm an excellent crystallized of Bi 2 O 2 Se nanosheets. The as-prepared Bi 2 O 2 Se nanosheets were used to fabricate electrodes for a self-powered photodetector and exhibit preferable photoresponse activity. At 0 V, the photoeletrochemical (PEC) tests demonstrate that the responsivity and the response time of Bi 2 O 2 Se nanosheets can reach up to 20 μA W −1 and 0.12 s. Furthermore, the time stability and cycle stability also were measured. After a long time of testing, the photocurrent of Bi 2 O 2 Se nanosheets remained around 300 nA, and after processing 100 and 200 cycles, the photocurrent exhibits slight distinction. These findings indicate that Bi 2 O 2 Se nanosheets have great prospects for future applications in self-powered photodetector devices.

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基于Bi2O2Se纳米片的高性能自供电光电探测器

二维层状材料 Bi 2 O 2 Se 纳米片由于其高载流子迁移率、接近理想的亚阈值摆动和高空气稳定性，在高性能场效应晶体管和光电探测器中显示出巨大的应用潜力。在这里，我们已经通过简便的一步水热法成功合成了 Bi 2 O 2 Se 纳米片。Bi 2 O 2 Se 纳米片通过扫描电子显微镜 (SEM)、拉曼光谱和 X 射线衍射 (XRD) 图案进行表征，这证实了 Bi 2 O 2 Se 纳米片的优良结晶。所制备的 Bi 2 O 2 Se 纳米片用于制造自供电光电探测器的电极，并表现出较好的光响应活性。在 0 V 时，光电化学(PEC) 测试表明Bi 2 O 2 Se 纳米片的响应度和响应时间可以达到20 μA W -1 和0.12 s。此外，还测量了时间稳定性和循环稳定性。经过长时间的测试，Bi 2 O 2 Se 纳米片的光电流保持在 300 nA 左右，经过 100 次和 200 次循环后，光电流表现出细微的差别。这些发现表明，Bi 2 O 2 Se 纳米片在自供电光电探测器器件的未来应用中具有广阔的前景。