One-Step Synthesis and Assembly of Two-Dimensional Arrays of Mercury Sulfide Nanocrystal Aggregates at the Air/Water Interface

Yang, Yangang; Liu, Hong-Guo; Chen, Lan-Jun; Chen, Kuangcai; Ding, Haiyang; Hao, Jian

doi:10.1021/la102407s

Cited by 13 publications

(10 citation statements)

References 62 publications

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“…Owing to the Cd and Zn passivation, the HgS nanocrystals exhibited clear photoluminescence in the visible range, as shown in Figure 8b. An alternative approach to synthesize aggregated HgS nanocrystals was proposed by Yang et al, 130 who exploited the fact that ordered two-dimensional arrays of aggregates could be obtained at the interface between water and chloroform. HgS nanocrystals were formed through the interfacial reaction between Hg(acetate) 2 and H 2 S gas from the upper aqueous phase.…”

Section: Hgs Nanocrystal Synthesismentioning

confidence: 99%

Mercury Chalcogenide Quantum Dots: Material Perspective for Device Integration

et al. 2021

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Nanocrystals (NCs) are one of the few nanotechnologies to have attained mass market applications with their use as light sources for displays. This success relies on Cd-and In-based wide bandgap materials. NCs are likely to be employed in more applications as they provide a versatile platform for optoelectronics, specifically, infrared optoelectronics. The existing material technologies in this range of wavelengths are generally not cost effective, which limits the spread of technologies beyond a few niche domains, such as defense and astronomy. Among the potential candidates to address the infrared window, mercury chalcogenide (HgX) NCs exhibit the highest potential in terms of performance. In this review, we discuss how material developments have facilitated device enhancements. Because such NCs are primarily used because of their infrared optical features, we first review the strategies for the associated colloidal growth and electronic structure. The review is organized considering three main device-related applications: light emission, electronic transport and infrared photodetection.

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Section: Hgs Nanocrystal Synthesismentioning

confidence: 99%

Mercury Chalcogenide Quantum Dots: Material Perspective for Device Integration

et al. 2021

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“…Yang et al 406 have recently studied organisation in HgS NC layers grown on arachidic acid monolayers at a liquid-air interface. Although the growth method is rather similar to early studies, here the authors realised the packing of organized aggregates of NCs which had regular shape and size.…”

Section: Nc Close Packed Arrays Dense Films and Solidsmentioning

confidence: 99%

Narrow bandgap colloidal metal chalcogenide quantum dots: synthetic methods, heterostructures, assemblies, electronic and infrared optical properties

2013

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The chemistry, material processing and fundamental understanding of colloidal semiconductor nanocrystals (quantum dots) are advancing at an astounding rate, bringing the prospects of widespread commercialization of these novel and exciting materials ever closer. Interest in narrow bandgap nanocrystals in particular has intensified in recent years, and the results of research worldwide point to the realistic prospects of applications for these materials in solar cells, infrared optoelectronics (e.g. lasers, optical modulators, photodetectors and photoimaging devices), low cost/large format microelectronics, and in biological imaging and biosensor systems to name only some technologies. Improvements in fundamental understanding and material quality are built on a vast body of experience spread over many different methods of colloidal synthetic growth, each with their own strengths and weaknesses for different materials and sometimes with regard to particular applications. The nanocrystal growth expertise is matched by a rapidly expanding, and highly interdisciplinary, understanding of how best to assemble these materials into films or hybrid composites and thereby into useful devices, and again there are many different strategies that can be adopted. In this review we have attempted to survey and compare the recent work on colloidal synthesis, film and nanocrystal composite material fabrication, concentrating on narrow bandgap chalcogenide materials and some of their topical applications in the solar energy and biological fields. Since these applications are attracting rising interest across a wide range of disciplines, from the biological sciences, device engineering, and materials processing fields as well as the physics and synthetic chemistry communities, we have endeavoured to make the review of these narrow bandgap nanomaterials both comprehensive and accessible to newcomers to the area.

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“…For hydrophilic NPs, Yang and coworker reported the formation of highly ordered HgS NP array at the air‐water interface by a one‐step synthesis and assembly method . Myoung's group reported the directed self‐assembly of hydrophilic SiO 2 NPs into a closely packed monolayer with a high‐throughput .…”

Section: Self‐assembly Of Nanoparticle At the Air‐liquid Interfacementioning

confidence: 99%

Air‐Liquid Interfacial Self‐Assembly of Two‐Dimensional Periodic Nanostructured Arrays

et al. 2019

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The large‐scale fabrication of two‐dimensional periodic nanostructures in high quality holds great promises for building novel nanoscale devices. They have been conventionally produced using interface‐mediated self‐assembly strategies such as the Langmuir‐Blodgett and oil‐water interfacial assembly methods, which however are limited by the stringent requirements for the hydrophilicity/hydrophobicity of the particle surface. In this article, we review the recent progress on the air‐liquid interfacial self‐assembly to demonstrate that such strategies are simple, inexpensive, effective, scalable, and versatile in the fabrication of two‐dimensional periodic nanostructured arrays. They can be successfully employed to assemble nanoparticles of various compositions and surface properties into periodic nanostructured monolayer films, which find many important applications, for example, in the construction of colorimetric sensors for gas, chemical, and biomedical detection.

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One-Step Synthesis and Assembly of Two-Dimensional Arrays of Mercury Sulfide Nanocrystal Aggregates at the Air/Water Interface

Cited by 13 publications

References 62 publications

Mercury Chalcogenide Quantum Dots: Material Perspective for Device Integration

Mercury Chalcogenide Quantum Dots: Material Perspective for Device Integration

Narrow bandgap colloidal metal chalcogenide quantum dots: synthetic methods, heterostructures, assemblies, electronic and infrared optical properties

Air‐Liquid Interfacial Self‐Assembly of Two‐Dimensional Periodic Nanostructured Arrays

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