Abstract
In this paper, Bi2S3 microflowers have been successfully synthesized via a facile one-pot hydrothermal method and characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray analysis, and X-ray photoelectron spectroscopy. Then the Bi2S3 microflowers were deposited on patterned ITO glass substrates by dip-coating to fabricate photodetectors. The photoresponse properties using Bi2S3 microflowers as a representative system show a significantly enhanced conductivity and the current–voltage characteristic exhibit ca. 1.7 orders of magnitude larger than the dark current. The response and decay times are estimated to be ~227 and 880 ms, respectively, indicating that flower-like Bi2S3 may be an excellent candidate for high-speed and high-sensitivity photoelectrical switches and light-sensitive devices.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (Grant No. 61405076, 11304124, 61240056) and the Starting Research Fund from the Jianghan University (2012017).
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Tian, Y., Ding, Tt., Zhu, Xl. et al. Bi2S3 microflowers assembled from one-dimensional nanorods with a high photoresponse. J Mater Sci 50, 5443–5449 (2015). https://doi.org/10.1007/s10853-015-9089-7
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DOI: https://doi.org/10.1007/s10853-015-9089-7