Synthesis and Optoelectronic Properties of Two-Dimensional FeS<sub>2</sub> Nanoplates

Kirkeminde, Alec; Ruzicka, Brian A.; Wang, Rui; Puna, Sarah; Zhao, Hui; Ren, Shenqiang

doi:10.1021/am300089f

Cited by 78 publications

(73 citation statements)

References 20 publications

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“…For example, FeS2 tend to grow in three dimensions, but two-dimensional FeS2 nanoplates have been reported. 51,52 Thus, certain synthesis parameters force the NCs to grow in a non-energetically favored shape and yield two-dimensional structures. What drives this anisotropic growth?…”

Section: Figure 1: Evolution Of the Gibbs Free Energy Of A Cluster Vementioning

confidence: 99%

Two-Dimensional Colloidal Nanocrystals

et al. 2016

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Abstract:In this paper, we review recent progresses on colloidal growth of 2D nanocrystals.We identify four main sources of anisotropy which lead to the formation of plate-and sheetlike colloidal nanomaterials. Defect induced anisotropy is a growth method which relies on the presence of topological defects at the nanoscale to induce 2D shapes objects. Such a method is particularly important in the growth of metallic nanoobjects. Another way to induce anisotropy is based on ligand engineering. The availability of some nanocrystal facets can be tuned by selectively covering the surface with ligands of tunable thickness. Cadmium chalcogenides nanoplatelets (NPLs) strongly rely on this method which offers atomic control in the thinner direction, down to a few monolayers. 2D objects can also be obtained by post or in situ self-assembly of nanocrystals. This growth method differs from the previous ones in the sense that the elementary objects are not molecular precursors, and is a common method for lead chalcogenide compounds. Finally, anisotropy may simply rely on the lattice anisotropy itself as it is common for rod-like nanocrystals. Colloidally grown Transition Metal DiChalcogenides (TMDC) in particular result from such process. We also present hybrid syntheses which combine several of the previously described methods and other paths, such as cation exchange, which expand the range of available materials. Finally, we discuss in which sense 2D-objects differ from 0D nanocrystals and review some of their applications in optoelectronics, including lasing and photodetection, and biology.

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Section: Figure 1: Evolution Of the Gibbs Free Energy Of A Cluster Vementioning

confidence: 99%

Two-Dimensional Colloidal Nanocrystals

et al. 2016

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“…It can also be observed that elemental sulphur and FeCl 2 were employed as the sulphur and iron precursors, in the majority of the reported experiments. Only some cases used iron pentacarbonyl 70 and FeBr 2 (ref. 71) as iron precursors.…”

Section: -69mentioning

confidence: 99%

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Huang

Zhu

2016

RSC Adv.

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Synthesis of iron pyrite with defined morphology has long been actively pursued, due to the strong size and shape dependence of their chemical and physical properties. This review provides comprehensive information outlining current knowledge regarding the morphology controllable syntheses of micro-and nano-iron pyrite mono-and poly-crystals. The wet-chemical methods are summarized as the controllable syntheses, including the hydrothermal, solvothermal, hot-injection and heating-up methods, sulphidation and methods with other relatively high efficiencies. The present study reveals the discussion of relationship between the morphologies and major controlling factors, the temperature, precursor chemicals, solvents and surfactants. The existing challenges for future fine tuning of iron pyrite facets are also proposed for improving the performance of iron pyrite based materials.

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“…In our lab, we have also taken to utilizing the hot injection method for pyrite nanocrystal synthesis [24,54]. It has been observed that both cubes and nanospheres can be made for pyrite nanomaterial, but from the use of different synthetic routes.…”

Section: Hot Injection Synthesismentioning

confidence: 99%

The Renaissance of Iron Pyrite Photovoltaics: Progress, Challenges, and Perspectives

Kirkeminde

Gong

Ren

2014

Green Energy and Technology

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Pyrite has long been proposed as a green solar cell material. Even with its promising properties, studies on pyrite have lagged behind many other semiconducting materials. Unanswered questions about the affects of defects and how to grow pure crystalline material still exist. With the rise of nanochemistry and more powerful computational methods, pyrite is seeing an explosion of new studies. This chapter first presents pyrite and its green promise as a material, followed by the materials characteristics. It then moves into synthesis of pyrite, starting with old methods and then transitioning into different methods of nanocrystal creation. Finally, photo-devices created out of pyrite materials are discussed. The chapter then wraps up with a summary and what still needs to be done for pyrite to achieve its golden status.

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Synthesis and Optoelectronic Properties of Two-Dimensional FeS₂ Nanoplates

Cited by 78 publications

References 20 publications

Two-Dimensional Colloidal Nanocrystals

Two-Dimensional Colloidal Nanocrystals

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

The Renaissance of Iron Pyrite Photovoltaics: Progress, Challenges, and Perspectives

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Synthesis and Optoelectronic Properties of Two-Dimensional FeS2 Nanoplates

Cited by 78 publications

References 20 publications

Two-Dimensional Colloidal Nanocrystals

Two-Dimensional Colloidal Nanocrystals

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

The Renaissance of Iron Pyrite Photovoltaics: Progress, Challenges, and Perspectives

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Synthesis and Optoelectronic Properties of Two-Dimensional FeS₂ Nanoplates