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  • Switched Photocurrent on Tin Sulfide-Based Nanoplate Photoelectrodes

    Author(s)
    Chen, Hongjun
    Lyu, Miaoqiang
    Zhang, Meng
    Feron, Krishna
    Searles, Debra J
    Dargusch, Matthew
    Yao, Xiangdong
    Wang, Lianzhou
    Griffith University Author(s)
    Yao, Xiangdong
    Year published
    2017
    Metadata
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    Abstract
    A new type of SnS2 nanoplate photoelectrode is prepared by using a mild wet-chemical method. Depending on the calcination temperatures, SnS2-based photoelectrodes can either retain their n-type nature with greatly enhanced anodic photocurrent density (ca. 1.2 mA cm−2 at 0.8 V vs. Ag/AgCl) or be completely converted into p-type SnS to generate approximately 0.26 mA cm−2 cathodic photocurrent density at −0.8 V vs. Ag/AgCl. The dominance of sulfur and tin vacancies are found to account for the dramatically different photoelectrochemical behaviors of n-type SnS2 and p-type SnS photoelectrodes. In addition, the band structures ...
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    A new type of SnS2 nanoplate photoelectrode is prepared by using a mild wet-chemical method. Depending on the calcination temperatures, SnS2-based photoelectrodes can either retain their n-type nature with greatly enhanced anodic photocurrent density (ca. 1.2 mA cm−2 at 0.8 V vs. Ag/AgCl) or be completely converted into p-type SnS to generate approximately 0.26 mA cm−2 cathodic photocurrent density at −0.8 V vs. Ag/AgCl. The dominance of sulfur and tin vacancies are found to account for the dramatically different photoelectrochemical behaviors of n-type SnS2 and p-type SnS photoelectrodes. In addition, the band structures of n-type SnS2 and p-type SnS photoelectrodes are also deduced, which may provide an effective strategy for developing SnS2/SnS films with controllable energy-band levels through a simple calcination treatment.
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    Journal Title
    ChemSusChem
    Volume
    10
    Issue
    4
    DOI
    https://doi.org/10.1002/cssc.201601603
    Subject
    Analytical chemistry
    Other chemical sciences
    Other chemical sciences not elsewhere classified
    Chemical engineering
    Publication URI
    http://hdl.handle.net/10072/342027
    Collection
    • Journal articles

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