Chemical bath deposition of SnS nanosheet thin films for FTO/SnS/CdS/Pt photocathode

Jing, Jun; Cao, Meng; Wu, Chuangsheng; Huang, Jian; Lai, Jianming; Sun, Yun; Wang, Linjun; Shen, Yue

doi:10.1016/j.jallcom.2017.07.303

Cited by 33 publications

(14 citation statements)

References 33 publications

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“…21−30 Recently, SnS photocathodes have been obtained from various fabrication methods such as solution-phase deposition, 29 spray pyrolysis, 21,25 electrochemical deposi-tion, 22,23,26,28 successive ionic layer adsorption and reaction (SILAR), 24 and chemical bath deposition (CBD). 27,30 These results generally revealed that SnS photocathodes can provide the enhanced photocurrents, as summarized in Table 1, which compares the performances of various SnS photocathodes. The measured photocurrents are in the range of 0.6 to 0.7 mA cm −2 with stable cathodic operation in an aqueous solution with pH of ∼1, and they can be further improved by a proper preparation method for surface modification.…”

mentioning

confidence: 68%

“…Earth-abundant nontoxic tin monosulfide (SnS, mineral Herzenbergite) is a potential candidate for such an application due to its optical band gap (1.4 to 1.7 eV), appropriate for solar energy absorption and high absorption coefficient (>10 4 cm –1 ). − In addition, intrinsic p-type nature of SnS makes it promising for use as a photocathode material for PEC cells. − Recently, SnS photocathodes have been obtained from various fabrication methods such as solution-phase deposition, spray pyrolysis, , electrochemical deposition, ,,, successive ionic layer adsorption and reaction (SILAR), and chemical bath deposition (CBD). , These results generally revealed that SnS photocathodes can provide the enhanced photocurrents, as summarized in Table , which compares the performances of various SnS photocathodes. The measured photocurrents are in the range of 0.6 to 0.7 mA cm –2 with stable cathodic operation in an aqueous solution with pH of ∼1, and they can be further improved by a proper preparation method for surface modification.…”

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confidence: 99%

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Photocurrent Enhancement by a Rapid Thermal Treatment of Nanodisk-Shaped SnS Photocathodes

Patel

Kumar

Kim

et al. 2017

J. Phys. Chem. Lett.

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Photocathodes made from the earth-abundant, ecofriendly mineral tin monosulfide (SnS) can be promising candidates for p/n-type photoelectrochemical cells because they meet the strict requirements of energy band edges for each individual photoelectrode. Herein we fabricated SnS-based cell that exhibited a prolonged photocurrent for 3 h at -0.3 V vs the reversible hydrogen electrode (RHE) in a 0.1 M HCl electrolyte. An enhancement of the cathodic photocurrent from 2 to 6 mA cm is observed through a rapid thermal treatment. Mott-Schottky analysis of SnS samples revealed an anodic shift of 0.7 V in the flat band potential under light illumination. Incident photon-to-current conversion efficiency (IPCE) analysis indicates that an efficient charge transfer appropriate for solar hydrogen generation occurs at the -0.3 V vs RHE potential. This work shows that SnS is a promising material for photocathode in PEC cells and its performance can be enhanced via simple postannealing.

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confidence: 68%

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confidence: 99%

Photocurrent Enhancement by a Rapid Thermal Treatment of Nanodisk-Shaped SnS Photocathodes

Patel

Kumar

Kim

et al. 2017

J. Phys. Chem. Lett.

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“…Among them, Sn-based chalcogenides composed of nontoxic and earth-abundant elements are promising candidates. , In particular, orthorhombic herzenbergite tin monosulfide (SnS) has an anisotropic two-dimensional (2D) layered orthorhombic crystal structure (space group: Pbnm ) in which in-plane covalent bonds are present, while van der Waals bonds exist vertically along the [010] direction. − SnS has a suitable band gap (1.3 eV) for visible-light harvesting and exhibits a high hole mobility (∼90 cm 2 V –1 s –1 , ⊥ to the [010] axis), appropriate carrier concentrations (10 14 –10 17 cm –3 ), and a high optical absorption coefficient of 10 5 cm –1 in the visible region of the solar spectrum. − The theoretical photocurrent density of −38 mA cm –2 can be achieved using orthorhombic SnS-based photocathodes, assuming a band gap of 1.3 eV and 100% incident photon-to-current conversion under simulated AM 1.5G solar irradiation. Despite these promising characteristics, the photocurrent density of SnS-based photocathodes reported to date is insufficient for application to real PEC devices. − …”

Section: Introductionmentioning

confidence: 99%

High-Performance Phase-Pure SnS Photocathodes for Photoelectrochemical Water Splitting Obtained via Molecular Ink-Derived Seed-Assisted Growth of Nanoplates

Lee

Yang

Tan

et al. 2020

ACS Appl. Mater. Interfaces

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Although tin monosulfide (SnS) is one of the promising earth-abundant semiconducting materials for photoelectrochemical water splitting, the performance of SnS photocathodes remains poor. Herein, we report a stepwise approach for the fabrication of highly efficient photocathodes based on SnS nanoplates via elaborate modulation of molecular solutions. It is demonstrated that phase-pure SnS nanoplates without detrimental secondary phases (such as SnS 2 and Sn 2 S 3 ) can be readily obtained by adjusting the amounts of Sn and S in the precursor solution. Additionally, the orientation of SnS nanoplates is controlled by implementing different types of SnS seed layers. The orientations of the SnS seed layers are changed according to the molecular shapes of the Sn− S bonds in the molecular solutions, depending on the relative nucleophilicity of the molecular moieties formed by specific thiol−amine reactions. The molecular Sn−S sheets in the seed ink was obtained by the reaction in a solvent mixture of thiogylcolic acid and ethanolamine. By contrast, the short Sn−S molecular rods result from the reaction in a solvent mixture of 2-mercaptoethanol and ethylenediamine. Interestingly, the relatively short rodlike morphology of the SnS seed induces the growth of SnS nanostructures faceted by preferred ( 111) and (101) planes, leading to fast charge transport. With the formation of a proper band alignment with n-type CdS and TiO 2 , the preferred (111)-and (101)-oriented SnS nanoplatebased photocathode exhibited a photocurrent density of −19 mA cm −2 at 0 V versus a reversible hydrogen electrode, establishing a new benchmark for SnS photocathodes.

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“…A layer of CdS film was grown on CdTe by chemical bath deposition method [18]. A total of 0.015 M CdSO 4 and 1.5 M thiourea solutions were first prepared, respectively.…”

Section: The Preparation Of Pt/cds/cdte/fto Structuresmentioning

confidence: 99%

Electrodeposition of CdTe Thin Films for Solar Energy Water Splitting

et al. 2020

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CdTe thin films have been prepared by electrochemical deposition. The morphological, structural, and optical properties of CdTe thin films deposited with different deposition time were investigated, and the influence of film thickness on the photoelectric characteristics of CdTe thin films was studied. At the deposition time of 1.5 h, CdTe thin films had good optical properties and the photocurrent reached 20 μAcm−2. Furthermore, the Pt/CdS/CdTe/FTO structure was prepared to improve its PEC stability and the photocurrent of 240 μAcm−2 had been achieved.

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Chemical bath deposition of SnS nanosheet thin films for FTO/SnS/CdS/Pt photocathode

Cited by 33 publications

References 33 publications

Photocurrent Enhancement by a Rapid Thermal Treatment of Nanodisk-Shaped SnS Photocathodes

Photocurrent Enhancement by a Rapid Thermal Treatment of Nanodisk-Shaped SnS Photocathodes

High-Performance Phase-Pure SnS Photocathodes for Photoelectrochemical Water Splitting Obtained via Molecular Ink-Derived Seed-Assisted Growth of Nanoplates

Electrodeposition of CdTe Thin Films for Solar Energy Water Splitting

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