A5102917135- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- CO2 Reduction Techniques and Catalysts
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- Gold and Silver Nanoparticles Synthesis and Applications
- Molecular Junctions and Nanostructures
- TiO2 Photocatalysis and Solar Cells
- Ionic liquids properties and applications
- Ammonia Synthesis and Nitrogen Reduction
- Nanocluster Synthesis and Applications
- Machine Learning in Materials Science
- Green IT and Sustainability
University of Toronto
2012-2021
Toronto Public Health
2021
This analysis presents system level of three stages along the transition towards sustainable synthesis ammonia.
ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTEthylene Electrosynthesis: A Comparative Techno-economic Analysis of Alkaline vs Membrane Electrode Assembly CO2–CO–C2H4 TandemsJared SislerJared SislerDepartment Electrical and Computer Engineering, University Toronto, 35 St George Street, Ontario M5S 1A4, CanadaMore by Jared Sislerhttp://orcid.org/0000-0002-0660-7909, Shaihroz KhanShaihroz KhanDepartment CanadaDepartment Chemical Engineering Applied Chemistry, 200 College 3E5, Khan, Alexander...
A bulk heterojunction of ordered titania nanopillars and PbS colloidal quantum dots is developed. By using a pre-patterned template, an nanopillar matrix with nearest neighbours 275 nm apart height 300 fabricated subsequently filled in to form depleted exhibiting power conversion efficiency 5.6%.
Using first-principles simulations on PbS and CdSe colloidal quantum dots, we find that surface defects form in response to electronic doping charging of the nanoparticles. We show trap states nanocrystals are dynamic entities, contrast with conventional picture wherein traps viewed as stable can be filled or emptied, but not created destroyed. These arise from formation breaking atomic dimers at nanoparticle surface. The dimers' energy levels reside within bandgap, which case a is formed....
Semiconductors with bandgaps in the near- to mid-infrared can harvest solar light that is otherwise wasted by conventional single-junction cell architectures. In particular, colloidal quantum dots (CQDs) are promising materials since they cost-effective, processed from solution, and have a bandgap be tuned into infrared (IR) via size effect. These characteristics enable them portion of spectrum which silicon transparent. To date, IR CQD cells been made using wasteful complex sequential...
The highest-performing colloidal quantum dot (CQD) photovoltaics (PV) reported to date have relied on high-temperature (>500°C) annealing of electron-accepting TiO2. Room-temperature processing reduces energy payback time and manufacturing cost, enables flexible substrates, permits tandem solar cells that integrate a small-bandgap back cell atop low-thermal-budget larger-bandgap front cell. Here we report an electrode strategy depleted-heterojunction CQD PV device be fabricated entirely at...
The excitonic finestructure of colloidal quantum dots (CQDs) is comprised a manifold transitions, which only the lowest are populated and contribute to photoluminescence. This leads Stokes shift in emission relative absorption. Here we show experimentally that Pb Cd-based chalcogenide CQDs correlated with degree surface passivation, develop model explains how coupling affects core electronic states. Dark bright transitions can reorder split, increasing even without formation deep traps. Our...
Surface defects, acting as traps for charge carriers, are a key factor limiting the performance of colloidal quantum dot (CQD) photovoltaics. Revealing full electronic band structure PbS CQD devices, subjected to latest surface passivation treatments, enables direct correlation features in with device characteristics, described by Osman M. Bakr and co-workers on page 937.