Highly Crystalline Bi2O2Se Nanosheet Growth by Dual-Source Independent Control Technology for Photodetector

IF 5.5 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Applied Nano Materials Pub Date : 2025-04-01 DOI:10.1021/acsanm.5c00201

Fengpu Zhang, Fang Wang*, Shuyu Xu, Xiangjie Zhang, Xin Lin, Zewen Li, Junqing Wei, Zhitang Song and Kailiang Zhang*,

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Abstract

As an emerging 2D-layered semiconductor material, the Bi₂O₂Se nanosheet has shown great application potential in the field of electronics and optoelectronics due to its high carrier mobility, superior air stability, and tunable bandgap. However, the mechanism of controllable synthesis of Bi₂O₂Se nanosheets is still unclear, and further basic research and applications are urgently needed in the field of photovoltaics. In this paper, Bi₂O₂Se nanosheets were prepared based on the “dual-source independent control” method, and photodetectors were demonstrated on Si/SiO₂. The device has a mobility of 258.6 cm² V^–1 s^–1, responsivity of 8030 A/W at 532 nm (0.32 mW/cm²), and detectivity of 1.972 × 10¹¹ Jones, and the detector obtains highly stable and recoverable properties with multiple laser switches. The modulation mechanism of Bi₂O₂Se-based photodetectors is then explored based on the I–V characteristics of photodetectors and photoconductivity effect solutions.

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光电探测器用双源独立控制技术生长高晶Bi2O2Se纳米片

作为一种新兴的二维层状半导体材料，Bi2O2Se纳米片具有高载流子迁移率、优异的空气稳定性和可调的带隙，在电子和光电子领域显示出巨大的应用潜力。然而，可控合成Bi2O2Se纳米片的机理尚不清楚，迫切需要在光伏领域进行进一步的基础研究和应用。本文采用“双源独立控制”的方法制备了Bi2O2Se纳米片，并在Si/SiO2上展示了光电探测器。该器件的迁移率为258.6 cm2 V-1 s-1，在532 nm处的响应度为8030 a /W (0.32 mW/cm2)，探测率为1.972 × 1011 Jones，并且在多个激光开关下具有高度稳定和可恢复的性能。基于光电探测器的I-V特性和光电导效应解，探讨了bi2o2se基光电探测器的调制机制。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.

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