Edward Sargent


Contact via University of Toronto


Key Research Areas
Associated Researchers
Associated Organizations

Recent Research Projects

The electrically-powered synthesis of ethylene for the chemical industry

2018/19-2019/20 • $941,785 • PI,CO
Reducing carbon dioxide emissions is an urgent global challenge. There is currently a lack of economic*incentive to capture industrial emissions as there is little value in the captured CO2. However, as renewable*electricity capacity continues to increase in scale while dropping in price, there...

Nanotechnology

2017/18-2019/20 • $450,000 • PI
This program will focus on development of electrocatalysts for the renewables-powered chemical conversion of greenhouse gases to fuels and feedstocks. This will provide avenues to the storage of intermittent renewable electricity and the net reduction of carbon dioxide emissions. We will develop...

Development of integrated bioanalyte sensors for process monitoring in closed system bioreactors

2018/19-2019/20 • $419,100 • PI,CO
Efficient expansion and differentiation of stem cell cultures remains a bottleneck in the use of*stem cells and their differentiated products in regenerative medicine. In order to support cell*manufacturing and research, novel technologies must be developed to increase the*performance of culture...

Hybrid perovskite integrated electro-optic modulator

2019/20 • $230,223 • PI,CO
Modulators are core devices in silicon photonics chips, converting electrical signals to optical signals. Current technologies are based on silicon pn junctions. However, these devices fail to provide a combination of low cost, small footprint and low driving voltages. Other modulator...

Renewable carbon-based fuels and feedstocks from solar electricity + CO2

2017/18-2019/20 • $210,000 • PI
This research program seeks to advance the electricity-driven conversion of CO 2 into carbon-based fuels and feedstocks. We will develop systems that renewably synthesize chemicals, such as ethylene - processes that today rely on fossil fuel sources. We will develop physical models that enhance...

Stable and efficient blue light-emitting diodes

2019/20 • $154,667 • PI,CO
Display technologies have become prevalent in devices from watches to kitchen appliances. Solution-processed light-emitting diodes (LEDs) promise to reduce costs and increase the colour purity and sharpness of display technologies. However, the blue solution-processed LED has lagged behind its...

Electrosynthesis of Ethanol from CO2

2019/20 • $149,500 • PI,CO
The emergence of low-cost, low-carbon electricity has resulted in a significant interest in power-to-chemicals, particularly synthetic fuels, for utilization of CO2 and storage of variable electricity. Significant advances have been made in the selective and efficient conversion of CO2 to CO,...

CREATE Program in Materials for Enhanced Energy Technologies

2015/16-2018/19 • $900,000 • PI,CO
We are facing a global energy crisis led by our reliance on fossil fuels and our inefficient consumption. Materials are a key component to averting this crisis. By controlling the properties of materials down to the nanometer scale, we can improve performance in energy applications and reduce...

Electrically driven light emitting laminated safety glass

2017/18-2018/19 • $442,000 • PI
We will generate high-efficiency, transparent functional display glass (FDG) for next-generation automobiles. Current light-emitting-device (LED) technologies fail to provide high efficiency, transparency, and stability after exposure to high temperature and pressure that is required for...

Hybrid perovskite integrated electro-optic modulator****

2018/19 • $230,223 • PI,CO
Modulators are core devices in silicon photonics chips, converting electrical signals to optical signals. Current technologies are based on silicon pn junctions. However, these devices fail to provide a combination of low cost, small footprint and low driving voltages. Other modulator...

Canada Research Chair in Nanotechnology

2010/11-2017/18 • $1,400,000 • PI
We will apply innovations in nanomaterials to the realization of practical devices for use in energy harvesting and medical diagnostics. In the field of sustainable energy, we will employ colloidal quantum dots to create high-efficiency, low-cost solar cells. In the field of medical device...

Development of highly efficient optical materials for visual display applications

2014/15-2017/18 • $1,215,000 • PI
Xenon light bulbs have been used in the visual display industry for decades. However, xenon light bulbs are not able to meet the demand for operation at efficiency at high power without sacrificing either brightness or colour depth over extended periods. The goal of this project is to develop a...

A monolithically integrated infrared quantum dot laser for silicon photonics

2015/16-2017/18 • $487,433 • PI,CO
Cloud computing will revolutionize how data are shared, people interact, societies are formed and economic wealth is generated. Essential to the operation of the cloud are large scale computing facilities in the form of datacenters. The exploding energy demands of datacenters for cloud...

Rapid structural characterization of nanomaterials for energy and optoelectronic applications

2017/18 • $150,000 • PI,CO
The development of new efficient devices for energy conversion and optoelectronic applications is reliant on the creation of functional materials with desirable properties. In addition to high performance metrics, such properties include ease of fabrication, high stability under operating...

Inorganic Colloidal Quantum Dot Solar Cells.

2012/13-2016/17 • $450,000 • PI
In one hour, enough energy reaches Earth's surface from the sun to meet global energy demand for one year. Solar power is abundant, clean, and free. Today, it is not harvested in a manner that is simultaneously low in cost and high in efficiency. Our overall research *program* seeks to address...

System for characterization of electrocatalysts for renewable carbon dioxide conversion to valuable products

2016/17 • $150,000 • PI
The reduction of greenhouse gas emissions is an urgent problem facing our world. In order to prevent disastrous effects of climate change, we will require an 80% reduction of total carbon dioxide emissions by 2050, and net-zero emissions by 2100. Our team is developing methods for using...

Solar-driven removal of organic contaminants from water

2013/14-2015/16 • $435,600 • PI,CO
Water remediation is critical to reducing the environmental impact of oil sands extraction. However, effective water remediation requires technologies that are simultaneously high throughput, highly efficient and low cost, particularly for the large volumes contained within tailing ponds in the...

Atmospheric remediation via NOX degradation: the development of TiO2 materials for photocatalytic coatings that absorb visible light.

2014/15-2015/16 • $297,296 • PI
Titanium dioxide (TiO2) is a highly versatile material which has being widely applied to self-cleaning surface technologies given its propensity for catalyzing the photodegradation of volatile organic and inorganic pollutants, including major smog contributors such as nitrogen oxides. TiO2,...

Bio-inspired solar energy - Development

2015/16 • $12,000 • PI
No summary

Inorganic Colloidal Quantum Dot Solar Cells.

2012/13-2014/15 • $120,000 • PI
No summary

Reception for Industry Partners

2014/15 • $3,500 • PI
No summary

Nanoparticle-mediated highly efficient microfluidic capture and sorting of rare cells

2013/14 • $125,000 • PI,CO
Circulating tumor cells are shed into the bloodstream by growing tumours. CTCs can be present even when tumours are small and therefore present a promising marker for noninvasive early detection of cancer. We are developing a new device that can isolate these cells and classify their biochemical...

Towards colloidal quantum dot solar cell commercialization: record-efficiency, robust, encapsulated quantum dot solar cells

2013/14 • $122,500 • PI
The proposed research will accelerate the commercialization of a breakthrough renewable energy technology as a next generation, cost competitive alternative to fossil and nuclear fuels. A successful commercialization outcome for our quantum dot solar cell technology requires further investment...

Miniaturized microelectronic devices for cost-effective point-of-care diagnostics

2010/11-2012/13 • $434,500 • PI,CO
The fields of genomics and proteomics have led to the discovery of molecular fingerprints of diseases. These breakthroughs offer the potential to detect and treat these diseases early, improving the quality of healthcare in Canada and around the world. There is one key missing piece: the...

Reception for industry partners

2012/13 • $2,500 • PI
No summary

Atomic Layer Deposition for Advanced Photovoltaics and Optoelectronics.

2011/12 • $150,000 • PI,CO
We propose to acquire advanced infrastructure crucial to enabling a new generation of solar cell and silicon electronics technologies. The equipment requested is an atomic layer deposition (ALD) system, a controlled thin film deposition chamber that can put down thin films with subnanometer...

Solution-processed optoelectronic devices: investigating and controlling materials parameters for enhanced performance

2010/11-2011/12 • $77,400 • PI
Semiconductors are the foundation of the information age. Computers run on silicon. The Internet's fiber-optic backbone uses beams of light generated in InGaAsP lasers. Digital cameras register images in silicon sensors for visible light, or InGaAs photodetector arrays when infrared night vision...

Nanomaterials for Energy Symposium

2011/12 • $3,000 • PI
No summary

Canada Research Chair in Nanotechnology

2010/11 • $75,000 • PI
No summary

Patents

METHODS USING MICROELECTRODES AND BIOSENSING DEVICES INCORPORATING THE SAME

Nanostructured microelectrodes and biosensing devices incorporating the same are disclosed herein.
Related applications: ES20090810953T, EP20140176968, EP20090810953, WO2009CA01212, ES20140176968T, CA20092735735, EP20170165963, EP20140176968, ES20170165963T

PHOTOVOLTAIC DEVICES WITH DEPLETED HETEROJUNCTIONS AND SHELL-PASSIVATED NANOPARTICLES

Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions,...
Related applications: WO2011US30074, CA20112795719, EP20110711741

PHOTOVOLTAIC DEVICES WITH MULTIPLE JUNCTIONS SEPARATED BY A GRADED RECOMBINATION LAYER

A recombination layer with a gradient work function is provided which increases the power-conversion efficiency of multijunction photovoltaic devices by reducing the energy barrier to charge carriers migrating between pairs of photovoltaic junctions thereby facilitating the optimal recombination of opposing electron and hole currents generated when the photovoltaic is illuminated.
Related applications: WO2011US24222, EP20110705749, CA20112801750

PHOTOVOLTAIC DEVICES WITH PLASMONIC NANOPARTICLES

This application describes photovoltaic devices that include, in some embodiments, plasmonic nanoparticles and colloidal quantum dots and that have enhanced photovoltaic conversion efficiencies. This application also describes methods of making and using photovoltaic devices. Certain photovoltaic devices include plasmonic nanoparticles integrated with light absorbing semiconductor nanoparticles such as, but not limited to, colloidal quantum dots. Certain photovoltaic devices include...
Related applications: CA20142899045, WO2014US17793

ALL QUANTUM DOT BASED OPTOELECTRONIC DEVICE

An optoelectronic device (1) comprising an electron transport layer (2), an active layer (3), and a hole transport layer (4) is provided. Each of the electron transport layer, the active layer, and the hole transport layer comprises quantum dots.
Related applications: WO2015EP72836

ATOMIC LAYER DEPOSITION OF LEAD SULFIDE FOR INFRARED OPTOELECTRONIC DEVICES

A PIN type infrared photodiode (10) including a first electrode (14), a n-type semiconductor, an atomic layer deposition coating of lead sulfide (24), a p-type semiconductor (18) and a second electrode (20), wherein the n-type semiconductor comprises nanowires (16) conformally coated with the atomic layer deposition coating of lead sulfide (24). A method to produce a PIN type infrared photodiode (10).
Related applications: WO2015EP72030

QUANTUM-DOT-IN-PEROVSKITE SOLIDS

The present disclosure provides a composite material of a pre-formed crystalline or polycrystalline semiconductor particles embedded in a crystalline or polycrystalline perovskite matrix material. The pre-formed crystalline or polycrystalline semiconductor particles and and crystalline or polycrystalline perovskite being selected so that any lattice mismatch between the two lattices does not exceed about 10%. The pre-formed crystalline or polycrystalline semiconductor particles and said...
Related applications: WO2016CA50244, WO2016CA50244

OPTOELECTRONIC DEVICE WITH A 2D-PEROVSKITE ACTIVE LAYER

An optoelectronic device comprising an electron transport layer, an active layer (10), and a hole transport layer is provided. The active layer comprises a layered 2-dimensional perovskite matrix structure (1, 2) and quantum dots (3) included therein.
Related applications: WO2016EP82452

DEVICE FOR MAGNETIC PROFILING OF PARTICLES IN A FLOW

Methods and devices for magnetic profiling of target particles in a flow. There are a plurality of flow rate-reducing structures in a flow chamber. Each flow rate-reducing structure is provided with a localized magnetic attractive force, the magnetic attractive force defining a capture zone in the vicinity of the flow rate-reducing structure. The size of capture zones may be variable for different locations within the device. The magnetic attractive force, in the capture zone, is...
Related applications: WO2016CA51128, CA20163000438

ELECTROCHEMICAL ASSAY FOR A PROTEIN ANALYTE

There is described herein a method for the electrochemical quantification of a protein analyte in sample, comprising: providing one or more electrode(s), each comprising at least one peptide attached to its surface, the peptide being the protein or a fragment thereof; contacting the sample and electrode with an antibody in the presence of a redox reporter, wherein the antibody is capable of binding to each of the protein analyte and the peptide on the electrode; measuring an electrochemical...
Related applications: WO2016CA00259, EP20160854672

INKS COMPRISING NANOPARTICLES FOR HIGH-PERFORMANCE INKJET-PRINTED OPTOELECTRONICS

The present invention relates to a composition comprising: (A) at least one nanostructured material; (B) a polar and high-boiling solvent; and (C) a co-solvent and ligand capable of binding to the nanostructured material (A), wherein the composition may be used in inkjet printing. In specific embodiments, the high-boiling solvent (B) may be N-methyl-2-pyrrolidone (NMP), and the co-solvent and ligand (C) may be n-butylamine CH3(CH2)3NH2. The nanostructured material (A) may be a a metal...
Related applications: WO2018EP64195

CONTACT PASSIVATION FOR PEROVSKITE OPTOELECTRONICS

Disclosed herein are perovskite based optoelectronic devices made entirely via solution-processing at low temperatures (<150°C) which provide for simple manufacturing, compatibility with flexible substrates, and perovskite-based tandem devices. These perovskite based optoelectronic devices are produced using an electron transport layer on which the perovskite layer is formed which is passivated using a ligand selected to reduce electron-hole recombination at the interface between the...
Related applications: CA20183052076, EP20180744370

PHOTOVOLTAGE FIELD-EFFECT TRANSISTOR

In an embodiment, a photodetector is provided that provides a sensitizing medium adapted to receive electromagnetic radiation creating a junction with a transport channel, wherein the transport channel is adapted to exhibit a change in conductivity in response to reception of electromagnetic radiation by the sensitizing medium.
Related applications: WO2018CA50140

CATALYSTS WITH SHARP REACTION INTERFACE FOR ELECTROCHEMICAL CO2 REDUCTION WITH ENHANCED SELECTIVITY

An abrupt interface electroreduction catalyst includes a porous gas diffusion layer and a catalyst layer providing a sharp reaction interface. The electroreduction catalyst can be used for converting CO2 into a target product such as ethylene. The porous gas diffusion layer can be hydrophobic and configured for contacting gas-phase CO2 while the catalyst layer is disposed on and covers a reaction interface side of the porous gas diffusion layer. The catalyst layer has another side contacting...
Related applications: EP20180821612, WO2018CA50758

SEMICONDUCTOR NANOCRYSTAL PARTICLES AND PRODUCTION METHODS THEREOF

A semiconductor nanocrystal particle including a transition metal chalcogenide represented by Chemical Formula 1, the semiconductor nanocrystal particle having a size of less than or equal to 100 nanometers, and a method of producing the same: Chemical Formula 1 MMChawherein Mis Ca, Sr, Ba, or a combination thereof,Mis Ti, Zr, Hf, or a combination thereof, andCha is S, Se, Te, or a combination thereof.
Related applications: EP20190020042

METHOD FOR DETERMINATION OF CELLULAR MRNA

Methods and systems for mRNA analysis and quantification of mRNA expression in cells are provided. An example method includes introducing a first capture probe and a second capture probe into the cells, the first capture probe and the second capture probe each configured to be complementary to a respective section of target mRNA within the cells, wherein binding of the first and second capture probes to the respective sections of the target mRNA results in tagging of the cells and causes the...
Related applications: WO2018CA50977, EP20180845997

COMPOSITE MULTILAYERED ELECTROCATALYSTS FOR CO2 REDUCTION AND ASSOCIATED METHODS

The invention relates to a composite multilayer carbon dioxide (CO2) reduction catalyst, comprising a catalyst layer comprising at least one metal compound, the catalyst layer having opposed first and second sides; a hydrophobic gas-diffusion layer provided on the first side of the catalyst layer; a current collection structure provided on the second side of the catalyst layer. The metal is preferably copper. The invention also relates to a method for electrochemical production of a...
Related applications: EP20190714188, WO2019EP57573

QUASI TWO-DIMENSIONAL LAYERED PEROVSKITE MATERIAL, RELATED DEVICES AND METHODS FOR MANUFACTURING THE SAME

Optoelectronic devices, such as photovoltaic device and light-emitting diode, are provided. The devices include a quasi two-dimensional layered perovskite material and a passivating agent chemically bonded to the quasi two-dimensional layered perovskite material. The passivating agent includes a phosphine oxide compound. An active material is also provided. The active material includes a quasi two-dimensional perovskite compound having outermost edge(s), and a passivating agent chemically...
Related applications: WO2018CA51319

BORON-DOPED COPPER CATALYSTS FOR EFFICIENT CONVERSION OF CO2 TO MULTI-CARBON HYDROCARBONS AND ASSOCIATED METHODS

The invention relates to an electrocatalyst for catalyzing conversion of carbon dioxide into multi-carbon compounds comprising a boron-doped copper catalytic material. The electrocatalyst is produced by impregnation of a single crystal Cu (111) material with boric acid or by reacting Cu(ll) chloride with borohydride. The electrocatalyst is used for producing a C2 hydrocarbon such as ethylene from CO2.
Related applications: WO2019EP60329, EP20190721231

CORE/SHELL-VACANCY ENGINEERING (CSVE) OF CATALYSTS FOR ELECTROCHEMICAL CO2 REDUCTION

The invention relates to a catalyst system for electrocatalyzing conversion of CO2 into multi-carbon hydrocarbons and/or alcohols, and to the method to produce it. The catalyst comprises a core-shell structure comprising a core that is composed of metal sulphide and a shell that is composed of a metal with vacancies.
Related applications: WO2019EP61854, EP20190724761

CATALYSTS FOR ELECTROCHEMICAL CO2 REDUCTION AND ASSOCIATED METHODS

The invention relates to an electrocatalyst for reduction of CO2 to produce multi-carbon compounds, comprising a multi-metal material comprising a primary metal being copper and at least one enhancer metal selected from germanium, gallium, tin, silicon, silver, gold, zinc and aluminium. The invention also relates to a process for electrochemical production of a multi-carbon compound from CO2 using such an electrocatalyst.
Related applications: WO2019EP69040, EP20190748754

PASSIVATION OF NANOCRYSTALS TAILORED TO DIFFERENT FACETS, AND ITS APPLICATION TO OPTOELECTRONIC DEVICES

The present disclosure provides a method for facet-selective passivation on each crystal facet of colloidal nanocrystals via solution-phase ligand exchange process, thereby providing highly-passivated and colloidally-stable nanocrystal inks. This ligand exchange strategy separately addresses polar and non-polar facets precluding from deleterious nanocrystal aggregation in the colloid. The method involves the introduction of alkali metal organic complexes during metal halide conventional...
Related applications: WO2019CA50648

DOPED METAL HALIDE PEROVSKITES WITH IMPROVED STABILITY AND SOLAR CELLS COMPRISING SAME

Perovskites have high density of vacancies which absorb oxygen molecules and upon illumination, transform them into superoxide species which react with perovskites to decompose them, preventing use of these materials in many photo-applications. The present disclosure provides ways for improving the stability of perovskites in air ambient by doping perovskites with metals such as lead, cadmium, zinc, manganese, iron, cobalt, nickel, copper and tin which decreases the density of vacancies in...
Related applications: WO2019CA50804, EP20190815449

MICROFLUIDIC DEVICES AND METHODS OF USE

Microfluidic devices, kits systems and methods are provided for high through put phenotypic separation of magnetically labelled cell samples. The devices and methods can be used for example to sort cells based on level of target marker and to sort screen cells, such as CRISPR screen cells and other screens with a large number of target cells, to isolate target cells and putative genetic modifiers.
Related applications: EP20190834584, WO2019CA50971

LATTICE ANCHORING STABILIZES SOLUTION-PROCESSED SEMICONDUCTORS

Disclosed herein are lattice-anchored materials that combine cesium lead halide perovskites with lead chalcogenide colloidal quantum dots (CQDs) that surprisingly exhibit stability exceeding that of the constituent materials. The CQDs keep the perovskite in its desired cubic phase, suppressing the transition to the undesired, lattice-mismatched, phases. These composite materials exhibit an order of magnitude enhancement in air stability for the perovskite, showing greater than six months'...
Related applications: WO2019CA51554

ELECTROCATALYSTS SYNTHESIZED UNDER CO2 ELECTROREDUCTION AND RELATED METHODS AND USES

The invention provides an electrocatalyst and a method of preparing a metal catalyst material comprising in-situ electrodeposition of the catalytic metal in the presence of CO2 and/or CO under electroreduction conditions, wherein the catalytic metal comprising copper (Cu) or silver (Ag) is electrodeposited onto a substrate comprising a gas diffusion layer and wherein the gas diffusion layer includes a metal seed layer disposed thereon, so that the catalytic metal is electrodeposited as an...
Related applications: WO2020EP62602

CATALYST-IONOMER SYSTEMS AND METHODS FOR GAS-PHASE ELECTROLYSIS

The disclosure provides in its first aspect a catalyst system for gas-phase electrolysis of a reactant gas to form a product in an aqueous medium, the catalyst system comprising a catalytic material; an ion-conducting polymer layer provided on the catalytic material and comprising an ion-conducting polymer that includes hydrophilic and hydrophobic groups. Said catalyst system is remarkable in that the ion-conducting polymer layer has a thickness of 2 nm to 50 nm measured by...
Related applications: WO2020EP80754

CONVERSION OF CARBONATE INTO SYNGAS OR C2+ PRODUCTS IN ELECTROLYSIS CELL

Described herein are techniques for converting carbonate in a carbonate loaded solution into syngas or C2+ products within an electrolysis cell that includes a cathodic compartment, an anodic compartment and preferably a bipolar membrane separating the compartments. The carbonate ions are converted in situ by reaction with protons generated by the bipolar membrane to produce CO2 that is in turn electrocatalytically converted into the product. The electrolysis cell can be coupled to an air or...
Related applications: WO2020CA50598

THE STABILIZATION OF A CO-BOUND INTERMEDIATE VIA MOLECULAR TUNING PROMOTES CO2-TO-ETHYLENE CONVERSION

Aspects included herein include an electrolytic system for electrochemical reduction of carbon dioxide, the system comprising: a cathode comprising:a porous gas-diffusion membrane permeable to CO2; an electrocatalyst layer adjacent to a second side of the gas-diffusion membrane; the electrocatalyst layer comprising: an electrically conductive catalyst; and a selectivity-determining organic material attached to at least a portion of the electrically conductive catalyst; wherein: the organic...
Related applications: WO2020US41583

UPGRADING OF CO TO C3 PRODUCTS USING MULTI-METALLIC ELECTROREDUCTION CATALYSTS WITH ASSYMETRIC ACTIVE SITES

The present disclosure relates to electrocatalysts for electroreduction of a carbon-containing gas to produce n-propanol, for example. The electrocatalyst includes a multi-metallic material comprising a primary metal, such as Cu, and a metal dopant, such as Ag, selected and distributed to provide asymmetric active sites that include neighbouring atoms of the primary metal having distinct electronic structures to promote C2-C1 coupling. The electrocatalysts can be bimetallic or trimetallic,...
Related applications: WO2020CA51597

REAGENTLESS ELECTROCHEMICAL BIOSENSOR

A biosensor comprising an electrode and inverted molecular pendulums (iMPs) is described. Each IMP includes a linker bound to the electrode, and an analyte receptor and a redox reporter both bound to the linker. The redox reporter is reactive at positive potential when the linker presents a net negative charge and reactive at negative potential when the linker presents a net positive charge. Upon application of an electric field, the biosensor is characterized by an iMPs unbound state, where...
Related applications: WO2021CA50270