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    Self-Assembled Black Phosphorus-Based Composite Langmuir-Blodgett Films with an Enhanced Photocurrent Generation Capability and Surface-Enhanced Raman Scattering Properties

    Year: 2021

    Journal: ACS Omega, Volume 6, FEB 16, page 4430–4439

    Authors: Wang, Ran; Li, Min; Zhou, Jingxin; Zhang, Lexin; Gu, Jianmin; Wang, Mingli; Jiao, Tifeng

    Organizations: National Natural Science Foundation of China [21872119, 22072127]; Talent Engineering Training Funding Project of Hebei Province [A201905004]; Science and Technology Project of Hebei Education Department [ZD2018091, ZD2019069]

    In this work, Langmuir-Blodgett (LB) composite thin films were successfully prepared using black phosphorus nanosheets (BPNS) and dye molecules. Black phosphorus (BP) was first exfoliated in isopropanol solution to form BPNS, and then, BPNS were modified with 4-azidobenzoic acid (Az-BPNS) to improve their stability. The characterization results showed that the synthesized Az-BPNS-dye LB films have a uniform and ordered structure. In addition, the synthesized Az-BPNS-dye LB films exhibit excellent photo-electrochemical performance, and Az-BPNS-methylene blue (MB) produces higher photocurrent compared to Az-BPNS-Neutral red (NR) films. The current work shows an effective way to prepare functionalized BP-based materials and provide evidence for their application in optoelectronic devices.
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