title: Switched Photocurrent on Tin Sulfide-Based Nanoplate Photoelectrodes.
abstract: A new type of SnS2nanoplate 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-2at 0.8 V vs. Ag/AgCl) or be completely converted into p-type SnS to generate approximately 0.26 mA cm-2cathodic 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 SnS2and p-type SnS photoelectrodes. In addition, the band structures of n-type SnS2and 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.
authors.affiliation: Nanomaterials Centre, School of Chemical Engineering and Australian, Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
authors.forename: Hongjun
authors.initials: H
authors.lastname: Chen
authors.affiliation: Nanomaterials Centre, School of Chemical Engineering and Australian, Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
authors.forename: Miaoqiang
authors.initials: M
authors.lastname: Lyu
authors.affiliation: Nanomaterials Centre, School of Chemical Engineering and Australian, Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
authors.forename: Meng
authors.initials: M
authors.lastname: Zhang
authors.affiliation: CSIRO Energy, Newcastle, NSW 2300, Australia.|Centre for Organic Electronics, The University of Newcastle, Callaghan, NSW, 2308, Australia.
authors.forename: Krishna
authors.initials: K
authors.lastname: Feron
authors.affiliation: Centre for Theoretical and Computational Molecular Science, School of Chemistry and Molecular Biosciences and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
authors.forename: Debra J
authors.initials: DJ
authors.lastname: Searles
authors.affiliation: Centre for Advanced Materials Processing and Manufacture, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD, 4072, Australia.
authors.forename: Matthew
authors.initials: M
authors.lastname: Dargusch
authors.affiliation: School of Natural Sciences and Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Brisbane, QLD, 4111, Australia.
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Yao
authors.affiliation: Nanomaterials Centre, School of Chemical Engineering and Australian, Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
authors.forename: Lianzhou
authors.initials: L
authors.lastname: Wang
mesh_terms: D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D049329:Nanostructures / Q000737:chemistry*; D055668:Photochemical Processes; D013440:Sulfides / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D013440:Sulfides; D017971:Tin Compounds; C078041:tin sulfide
keywords: calcination; nanostructures; photoelectrochemistry; semiconductors; tin