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Antimonene-based flexible photodetector

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Antimonene is an emerging semiconducting two-dimensional (2D) material with various attractive properties, but its applications in optoelectronics have rarely been explored. Herein, we report a highly efficient preparation of few-layered antimonene by a polymer ionic liquid (PIL) assisted liquid-phase exfoliation method, which gives above 20% yield of micrometer sized nanosheets. Stability studies suggested that the presence of water in the solvent significantly accelerated the decomposition of the produced antimonene, while the antimonene dispersed in dry DMF exhibited a very high stability under ambient conditions. For the first time, flexible photodetectors based on a hybrid structure of few layer antimonene nanosheets modified by PIL and CdS quantum dots (QDs) were fabricated, which showed a good responsivity of 10 μA W−1 and on/off ratio of 26.8 under the bias of 1 V. This work demonstrates that PIL assisted liquid-phase exfoliation is a very promising method to achieve highly efficient preparation, preservation, and surface modification of few-layer antimonene, and hence enable the application of antimonene-based 2D materials in optoelectronics.

Graphical abstract: Antimonene-based flexible photodetector

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The article was received on 06 Jul 2019, accepted on 19 Aug 2019 and first published on 19 Aug 2019

Article type: Communication
DOI: 10.1039/C9NH00445A
Nanoscale Horiz., 2020, Advance Article

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    Antimonene-based flexible photodetector

    Q. Xiao, C. Hu, H. Wu, Y. Ren, X. Li, Q. Yang, G. Dun, Z. Huang, Y. Peng, F. Yan, Q. Wang and H. Zhang, Nanoscale Horiz., 2020, Advance Article , DOI: 10.1039/C9NH00445A

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