Nanoparticles of Cu<sub>2</sub>ZnSnS<sub>4</sub>as performance enhancing additives for organic field-effect transistors

Kevin, Punarja; Malik, Mohammad Azad; O’Brien, Paul; Cameron, Joseph; Taylor, Rupert G. D.; Findlay, Neil J.; Inigo, Anto R.; Skabara, Peter J.

doi:10.1039/c6tc01650b

Cited by 11 publications

(9 citation statements)

References 35 publications

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“…Between 2011 and 2013, there was an explosion of activity relating to the use of DTC SSPs for the synthesis of CZTS thin films , and QDs. ,− Aspects of this were reviewed by O’Brien and co-workers at the time. , These early studies have been extended, − and methods developed for preparation of ternary and multinary materials based on the CZTS structure (Table ). − We separate reports into three subsections, while realizing that there are necessarily areas of overlap, and also note that due to the similarity between the PXRD pattern of CZTS and both ZnS and Cu 2 SnS 3 , PXRD is not a good characterization technique here, Raman scattering measurements being needed for a definitive characterization.…”

Section: Multinary Sulfidesmentioning

confidence: 99%

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

2021

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Nanodimensional metal sulfides are a developing class of low-cost materials with potential applications in areas as wide-ranging as energy storage, electrocatalysis, and imaging. An attractive synthetic strategy, which allows careful control over stoichiometry, is the single source precursor (SSP) approach in which well-defined molecular species containing preformed metal–sulfur bonds are heated to decomposition, either in the vapor or solution phase, resulting in facile loss of organics and formation of nanodimensional metal sulfides. By careful control of the precursor, the decomposition environment and addition of surfactants, this approach affords a range of nanocrystalline materials from a library of precursors. Dithiocarbamates (DTCs) are monoanionic chelating ligands that have been known for over a century and find applications in agriculture, medicine, and materials science. They are easily prepared from nontoxic secondary and primary amines and form stable complexes with all elements. Since pioneering work in the late 1980s, the use of DTC complexes as SSPs to a wide range of binary, ternary, and multinary sulfides has been extensively documented. This review maps these developments, from the formation of thin films, often comprised of embedded nanocrystals, to quantum dots coated with organic ligands or shelled by other metal sulfides that show high photoluminescence quantum yields, and a range of other nanomaterials in which both the phase and morphology of the nanocrystals can be engineered, allowing fine-tuning of technologically important physical properties, thus opening up a myriad of potential applications.

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Section: Multinary Sulfidesmentioning

confidence: 99%

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

2021

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“…Within ternary chalcogenide semiconductors chalcostibite (CuSbS2) is an emerging one due to its suitable bandgap. It is relatively less explored in comparison with CuInS2 [13,14], Cu(InGa)Se2 [15], and Cu2ZnSnS4 [16,17] and has been demonstrated as a promising alternative, because all elemental components of CuSbS2 are earth abundant and economical, as the price of antimony is much lower than that of indium [18]. First-principle calculations using density functional theory have indicated CuSbS2 as a new promising candidate for a p-type absorber material [19].…”

Section: Introductionmentioning

confidence: 99%

Solution synthesis of CuSbS 2 nanocrystals: A new approach to control shape and size

Moosakhani

Alvani

Mohammadpour

et al. 2018

Journal of Alloys and Compounds

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Chalcostibite copper antimony sulfide (CuSbS2) micro-and nanoparticles with a different shape and size have been prepared by a new approach to hot injection route. In this method, sulfur in oleylamine (OLA) is employed as a sulfonating agent providing a simple route to control the shape and size of the particles, which enables the optimization of CuSbS2 for a variety of applications. The sulfur to metallic precursor ratio appears to be one of the most effective parameters along with the temperature and time for controlling the size and morphology of the particles. The growth mechanism study shows in addition to the CuSbS2 phase the presence of not previously observed intermediate phases (stibnite (Sb2S3) and famatinite (Cu3SbS4)) at the initial stage of the reaction. By increasing the ratio of sulfur to copper and antimony, wider and thinner CuSbS2 particles are obtained. The particles have nanoplate and nanosheet morphology with a good shape and size uniformity. Coalescence of very thin nanosheets occurs with increasing reaction time eventually leading to formation of thicker particles which can be called nanobricks. Band gap determinations demonstrate that the obtained CuSbS2 particles have both direct (1.51-1.57 eV) and indirect (1.44-1.51 eV) bandgaps. Transmission Electron Microscopy (TEM) studies revealed that the preferred growth directions are along the basis axes of the unit cell ([100] and [010]). Optical and structural properties of the obtained CuSbS2 particles are indicative for their great potential in different generations of solar cells and supercapacitor applications.

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“…Recently, earth-abundant, low-cost, and environmentally benign Cu 2 ZnSnS 4 (CZTS) NPs have been widely investigated for applications in solar energy harvesting owing to their outstanding merits, such as (i) heavy and toxic metal free NPs (without toxic elements, such as Cd and Pb), (ii) high absorption coefficient (over 10 4 cm –1 ), (iii) suitable direct optical band gap (1.5 eV), , which is more effective for broadening the light absorption range in comparison to that of CdS, CdSe, CdTe, etc., as well as good charge transport properties and high mobility, − and (iv) favorable electronic band alignment for water reduction . Despite these outstanding properties, few papers have described the use of CZTS NPs for PEC water splitting, and the obtained photocurrent density is still very low (2.16 mA/cm 2 at 1.0 V vs saturated calomel electrode (SCE)) .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Solar Water Oxidation Performance of TiO₂ via Band Edge Engineering: A Tale of Sulfur Doping and Earth-Abundant CZTS Nanoparticles Sensitization

et al. 2017

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We report the rational design and fabrication of earth-abundant, visible-light-absorbing Cu2ZnSnS4 (CZTS) nanoparticle (NP) in situ sensitized S doped TiO2 nanoarchitectures for high-efficiency solar water splitting. Our systematic studies reveal that these nanoarchitectures significantly enhance the visible-light photoactivity in comparison to that of TiO2, S doped TiO2, and CZTS NP sensitized TiO2. Detailed photoelectrochemical (PEC) studies demonstrate an unprecedented enhancement in the photocurrent density and incident photon to electron conversion efficiency (IPCE). This enhancement is attributed to the significantly improved visible-light absorption and more efficient charge separation and transfer/transport, resulting from the synergistic influence of CZTS NP sensitization and S doping, which were confirmed by electrochemical impedance spectroscopy (EIS). Moreover, density functional theory (DFT) calculations supported by the experimental evidence revealed that the gradient S dopant concentration along the depth direction of TiO2 nanorods led to the band gap grading from ∼2.3 to 2.7 eV. This S gradient doping introduced a terraced band structure via upshift of the valence band (VB), which provides channels for easy hole transport from the VB of S-doped TiO2 to the VB of CZTS and thereby enhances the charge transport properties of the CZTS/S-TNR photoanode. This work demonstrates the rational design and fabrication of nanoarchitectures via band edge engineering to improve the PEC performance using simultaneous earth-abundant CZTS NP sensitization and S doping. This work also provides useful insight into the further development of different nanoarchitectures using similar combinations for energy-harvesting-related applications.

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Nanoparticles of Cu₂ZnSnS₄as performance enhancing additives for organic field-effect transistors

Cited by 11 publications

References 35 publications

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Solution synthesis of CuSbS 2 nanocrystals: A new approach to control shape and size

Enhanced Solar Water Oxidation Performance of TiO₂ via Band Edge Engineering: A Tale of Sulfur Doping and Earth-Abundant CZTS Nanoparticles Sensitization

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Nanoparticles of Cu2ZnSnS4as performance enhancing additives for organic field-effect transistors

Cited by 11 publications

References 35 publications

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Solution synthesis of CuSbS 2 nanocrystals: A new approach to control shape and size

Enhanced Solar Water Oxidation Performance of TiO2 via Band Edge Engineering: A Tale of Sulfur Doping and Earth-Abundant CZTS Nanoparticles Sensitization

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Nanoparticles of Cu₂ZnSnS₄as performance enhancing additives for organic field-effect transistors

Enhanced Solar Water Oxidation Performance of TiO₂ via Band Edge Engineering: A Tale of Sulfur Doping and Earth-Abundant CZTS Nanoparticles Sensitization