Open AccessFacile partly templating growth of Bi 2 S 3 nanorods by in‐situ thermal sulphuration of BiOCl nanosheets and the photosensitive properties
Author(s) -
Cui Zhankui,
Hu Erkang,
Song Hongtao
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0744
Subject(s) - nanorod , materials science , raman spectroscopy , photocurrent , photoluminescence , scanning electron microscope , fourier transform infrared spectroscopy , photosensitivity , optoelectronics , chemical engineering , photoelectric effect , spectroscopy , nanotechnology , analytical chemistry (journal) , optics , chemistry , composite material , physics , engineering , chromatography , quantum mechanics
Bi 2 S 3 nanorods were prepared by a facile in‐situ thermal sulphuration method using BiOCl nanosheets as precursors. The products were characterised by X‐ray diffraction, Raman scattering, Fourier‐transform infrared spectroscopy and scanning electron microscopy. The optical properties were measured by ultraviolet‐visible spectroscopy and photoluminescence techniques. The photosensitive properties were investigated by the photoelectrochemical method. The Bi 2 S 3 sample was of pure orthorhombic phase and composed of nanorods with average diameter of ∼200 nm and length of ∼2 μm. A plausible gas phase growth mechanism was proposed which involved the partly templating of the shape of precursors by transforming BiOCl nanosheets to Bi 2 S 3 nanorods. The photocurrent of the products under irradiation of solar simulator reached 1.0 μA/cm 2 without bias voltage which was ten times that of the dark current. The photoelectric measurements clearly demonstrate that the as‐prepared Bi 2 S 3 nanorods possess excellent photosensitivity with stability and reproducibility, enabling the products suitable for the fabrication of high‐performance photodetectors and other optoelectric devices.