Microfluidic Tools for the Synthesis of Bespoke Quantum Dots

Li, Shangkun; Hsiao, Jeff C.; Howes, Philip D.; deMello, Andrew J.

doi:10.1002/9783527818341.ch4

Cited by 9 publications

(8 citation statements)

References 123 publications

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“…Thus, the literature now presents a number of studies where traditional syntheses carried out in batch reactors have been adopted into flow setups, using the same precursors and conditions. [35,259,288] For example, the synthesis of Ag NPs has been carried out in both batch and flow reactors using the same precursors (silver nitrate and ascorbic acid). [289] Both reprecipitation and hot-injection type approaches have also been used in the flow synthesis of lead-halide perovskite NPs.…”

Section: Synthesis Of Materials In Flow (Micro)reactors With Ex Situ ...mentioning

confidence: 99%

“…This approach can effectively mitigate fouling due to the recirculating motion of the reactive phase, minimizing the boundary layer. [259,300] In addition, such fluid recirculation enhances radial mixing, narrowing the residence time distribution. [301] Another way of overcoming the disadvantages of the laminar regime in microchannel flow reactors is by modifying the conventional straight channel geometry of the microchannels into a 3D one, e.g., adding bends, turns, and baffles.…”

Section: Comparison Of Flow Versus Batch Reactorsmentioning

confidence: 99%

“…[193,220] This makes the batch synthetic approach of optoelectronic materials less suitable for studying kinetics. [258,259] These aspects will be further discussed in the flow synthesis section below.…”

Section: Monitoring Synthesis In Batch Reactors With In Situ Characte...mentioning

confidence: 99%

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Importance of Monitoring the Synthesis of Light‐Interacting Nanoparticles – A Review on In Situ, Ex Situ, and Online Time‐Resolved Studies

Pinho

Zhang

Hoye

et al. 2022

Advanced Optical Materials

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Reducing the dimensionality of materials from bulk thin films and single crystals to nanocrystals (NCs) and quantum dots This review paper analyzes the importance of monitoring the synthesis of plasmonic and optoelectronic materials to provide a mechanistic understanding of their nucleatiçon and growth, as well as crucial kinetic insights to enable their future development. Light-interacting nanoparticles present strong size-property relationships, such that size control is at the core of any synthetic development. However, conventional ex situ characterization of these materials has heavily limited their development to simple trial-and-error approaches. Over the last decade, the development of in situ and online characterization capabilities has transformed the understanding of mechanistic models. In addition, time-resolved data are able to reveal the step rate, even for phenomena taking place in the microsecond timescale (i.e., nucleation), thanks to the use of micro-flow-reactors. However, the literature contains a few disagreements and inaccuracies, which are considered to be due to the general lack of attention and control on mixing (relevant when mixing time is comparable to the reaction time), and the presence of additives during synthesis (e.g., stabilizers). Finally, it is believed that recent in situ monitoring development coupled with reactor design brings unique opportunities to not only synthesize nanoparticles in a reproducible and controllable manner, but also gives data-rich approaches for self-regulated and automated systems.

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Section: Synthesis Of Materials In Flow (Micro)reactors With Ex Situ ...mentioning

confidence: 99%

Section: Comparison Of Flow Versus Batch Reactorsmentioning

confidence: 99%

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Importance of Monitoring the Synthesis of Light‐Interacting Nanoparticles – A Review on In Situ, Ex Situ, and Online Time‐Resolved Studies

Pinho

Zhang

Hoye

et al. 2022

Advanced Optical Materials

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“…100 Reviews from Niculescu et al 93 and Chen et al 101 summarize the variety of techniques centered around microfluidics that are used in the synthesis of functional nanomaterials, highlighting how this field has introduced several novel methods for the synthesis of a wide range of nanoparticles, alongside various additional papers focusing specifically on QD synthesis. 61,62,102 The pioneering work in this specific area was published in 2003, which demonstrated the feasibility of synthesizing CQDs in both chip-based 103 and tube-based 104 microfluidic flow systems. 4 Pre-requisites for designing a high quality data collection system, bringing together the ideas of microfluidics, high-throughput experimentation and automation using optimization algorithms.…”

Section: Constantly Evolving Microfluidic Synthetic Strategiesmentioning

confidence: 99%

Accelerating colloidal quantum dot innovation with algorithms and automation

et al. 2022

Self Cite

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“…The concept of microfluidic synthesis of colloidal QDs was first introduced in early 2000 by Mathies and Alivisatos, , as well as Jensen and Bawendi. , deMello was the first to demonstrate the potential of rapid synthesis optimization (black-box optimization) of QDs using a glass-based microfluidic reactor integrated with in situ spectroscopy . Recently, microfluidic synthesis of QDs, − particularly lead halide perovskites, − has received significant attention, mainly because of the enhanced heat and mass-transfer rates as well as precise process control offered by microscale fluidic handling technologies . Microfluidic synthesis of QDs offers the prospect of accelerated formulation screening, fundamental studies, and continuous manufacturing.…”

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confidence: 99%

Colloidal Quantum Dot Photovoltaics: Current Progress and Path to Gigawatt Scale Enabled by Smart Manufacturing

et al. 2020

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Colloidal quantum dots (QDs) have lately been pursued with intense vigor for optoelectronic applications such as photovoltaics (PV), flexible electronics, displays, mid-infrared photodetectors, lasers, and single-photon emitters. These nanometer-sized semiconducting crystals can be suitably mass-produced and size-tuned via cost-effective solution-based synthetic routes to operate in the quantum size confinement regime, endowing them with a wide array of exotic optical and electronic properties. While the first potential market entry could be in displays and in niche applications such as “internet-of-things”, ultimately, the technology has the potential to influence large-scale terrestrial power generation, because it is amenable to high-throughput synthesis from Earth-abundant materials and large-area solution-based coating techniques and can be air-stable. In this Review, we chronicle the recent advances that have propelled QD PV toward commercialization and highlight potential areas for further progress. We present an account of the material compositions being explored as QDs and their various benefits, major chemical passivation and doping strategies that have been developed to allay QD surface traps, and advanced device designs deployed to maximize charge extraction. We also discuss pathways to >20% efficient QD PV and describe recent advances in high-precision and autonomous synthesis of such materials. With recent demonstrations of scalable synthesis of high-quality QDs, smart manufacturing of QDs and QD solids, and fabrication of stable solar cells under ambient conditions, we suggest that the technology is on the road to achieving maturity and technological relevance and that gigawatt per year distributed panel production sites may be within reach.

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Microfluidic Tools for the Synthesis of Bespoke Quantum Dots

Cited by 9 publications

References 123 publications

Importance of Monitoring the Synthesis of Light‐Interacting Nanoparticles – A Review on In Situ, Ex Situ, and Online Time‐Resolved Studies

Importance of Monitoring the Synthesis of Light‐Interacting Nanoparticles – A Review on In Situ, Ex Situ, and Online Time‐Resolved Studies

Accelerating colloidal quantum dot innovation with algorithms and automation

Colloidal Quantum Dot Photovoltaics: Current Progress and Path to Gigawatt Scale Enabled by Smart Manufacturing

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