Design and Investigation of Clean Energy Materials:
From Stable Perovskites to Economical Catalysts for Oxygen Evolution Reaction
Alex named a highly-cited researcher 2020 in Materials Science by Web of Science
Each year, Clarivate™ identifies the world’s most influential researchers ─ the select few who have been most frequently cited by their peers over the last decade. In 2020, fewer than 6,200, or about 0.1%, of the world’s researchers, in 21 research fields and across multiple fields, have earned this exclusive distinction.
https://recognition.webofscience.com/awards/highly-cited/2020/
Alliance for accelerated materials discovery A3MD (using machine learning)
We are proud to be a part of this academia-industry collaboration, working on a high throughput design and synthesis of new materials for a range of applications: catalysis for water splitting and CO2 conversion, and LEDs.
Welcoming our new students!
Welcoming our fresh PhD student Milad, and a cohort of undergraduate researchers, Abhishek, Tony, Ihor, Usama, Akshay, Dave. Shadi is also returning to our group as a postdoc!
Teaching a machine to synthesize new semiconductors
In collaboration with Prof. Makhsud Saidaminov from the University of Victoria we are starting a new NFRF project targeting the synthesis of new solution-processed semiconductors.
Our initial goal is to improve the stability of fully-inorganic Pb-based perovskites for applications in solar cells and X-ray detectors. The next milestone is discovering new Pb-free perovskite-like materials.
Welcoming a visiting PhD student, Pimsuda, who will lead this project!
Kamal’s Mn-MOFs for water splitting in acidic media is online!
Congratulations, Kamal!
ACS Materials Letters, 2020, just accepted manuscript.
The oxygen evolution capabilities of a manganese metal-organic framework (MOF) are demonstrated in acid (pH 1.3) for the first time. The MOF/carbon black composite significantly outperforms MnO2, a known non-noble acidic OER catalyst, exhibiting overpotentials of 539 mV and 764 mV (vs. 715 mV and 898 mV for MnO2) for a current density of 10 mA/cm2 and 50 mA/cm2 respectively.
Our first publication on machine learning for materials science
Machine Learning Accelerates Discovery of Optimal Colloidal Quantum Dot Synthesis
In this work, we applied Bayesian optimization methods to facilitate the search in a multi-dimensional parameter space of quantum dot synthesis and achieved the optimal results in a smaller number of experimental trials compared to conventional methods (random search, grid search, or gradient descent).
Our new toy – Opentrons pipetting robot
We are 1 year old (and welcome new members)!
Vignesh, Felipe, Minghuan, Sepehr and Bhrugu join us as summer 2019 undergraduate interns, welcome!
Highly Cited Researchers 2018
We are proud to be named Highly Cited Researchers of 2018.
This award recognizes world-class researchers selected for their exceptional research performance, demonstrated by production of multiple highly cited papers that rank in the top 1% by citations for field and year in Web of Science.
For the 2018 Highly Cited Researchers analysis, the papers surveyed were published and cited during 2006-2016 and which then ranked in the top 1% by citations for their ESI field and year (the definition of a highly cited paper).
Here is our list:
Hybrid passivated colloidal quantum dot solidsAH Ip, SM Thon, S Hoogland, O Voznyy, D Zhitomirsky, R Debnath, …Nature nanotechnology 7 (9), 577 | 987 | 2012 | |
Efficient and stable solution-processed planar perovskite solar cells via contact passivationH Tan, A Jain, O Voznyy, X Lan, FPG De Arquer, JZ Fan, …Science 355 (6326), 722-726 | 764 | 2017 | |
Homogeneously dispersed multimetal oxygen-evolving catalystsB Zhang, X Zheng, O Voznyy, R Comin, M Bajdich, M García-Melchor, …Science 352 (6283), 333-337 | 572 | 2016 | |
Perovskite energy funnels for efficient light-emitting diodesM Yuan, LN Quan, R Comin, G Walters, R Sabatini, O Voznyy, …Nature nanotechnology 11 (10), 872 | 569 | 2016 | |
Perovskite–fullerene hybrid materials suppress hysteresis in planar diodesJ Xu, A Buin, AH Ip, W Li, O Voznyy, R Comin, M Yuan, S Jeon, Z Ning, …Nature communications 6, 7081 | 510 | 2015 | |
Ligand-stabilized reduced-dimensionality perovskitesLN Quan, M Yuan, R Comin, O Voznyy, EM Beauregard, S Hoogland, …Journal of the American Chemical Society 138 (8), 2649-2655 | 370 | 2016 | |
Air-stable n-type colloidal quantum dot solidsZ Ning, O Voznyy, J Pan, S Hoogland, V Adinolfi, J Xu, M Li, AR Kirmani, …Nature materials 13 (8), 822 | 370 | 2014 | |
Enhanced electrocatalytic CO2 reduction via field-induced reagent concentrationM Liu, Y Pang, B Zhang, P De Luna, O Voznyy, J Xu, X Zheng, CT Dinh, …Nature 537 (7620), 382 | 356 | 2016 | |
25th Anniversary Article: Colloidal Quantum Dot Materials and Devices: A Quarter‐Century of AdvancesJY Kim, O Voznyy, D Zhitomirsky, EH SargentAdvanced Materials 25 (36), 4986-5010 | 352 | 2013 | |
Materials processing routes to trap-free halide perovskitesA Buin, P Pietsch, J Xu, O Voznyy, AH Ip, R Comin, EH SargentNano letters 14 (11), 6281-6286 | 325 | 2014 | |
Highly Efficient Perovskite‐Quantum‐Dot Light‐Emitting Diodes by Surface EngineeringJ Pan, LN Quan, Y Zhao, W Peng, B Murali, SP Sarmah, M Yuan, …Advanced Materials 28 (39), 8718-8725 | 249 | 2016 | |
Gold adatom as a key structural component in self-assembled monolayers of organosulfur molecules on Au (1 1 1)P Maksymovych, O Voznyy, DB Dougherty, DC Sorescu, JT Yates JrProgress in Surface Science 85 (5-8), 206-240 | 236 | 2010 | |
Passivation using molecular halides increases quantum dot solar cell performanceX Lan, O Voznyy, A Kiani, FP García de Arquer, AS Abbas, GH Kim, M Liu, …Advanced Materials 28 (2), 299-304 | 218 | 2016 | |
Efficient luminescence from perovskite quantum dot solidsY Kim, E Yassitepe, O Voznyy, R Comin, G Walters, X Gong, …ACS applied materials & interfaces 7 (45), 25007-25013 | 218 | 2015 | |
10.6% certified colloidal quantum dot solar cells via solvent-polarity-engineered halide passivationX Lan, O Voznyy, FP García de Arquer, M Liu, J Xu, AH Proppe, G Walters, …Nano letters 16 (7), 4630-4634 | 210 | 2016 | |
Quantum-dot-in-perovskite solidsZ Ning, X Gong, R Comin, G Walters, F Fan, O Voznyy, E Yassitepe, …Nature 523 (7560), 324 | 208 | 2015 | |
Hybrid organic–inorganic inks flatten the energy landscape in colloidal quantum dot solidsM Liu, O Voznyy, R Sabatini, FPG de Arquer, R Munir, AH Balawi, X Lan, …Nature materials 16 (2), 258 | 207 | 2017 | |
All‐inorganic colloidal quantum dot photovoltaics employing solution‐phase halide passivationZ Ning, Y Ren, S Hoogland, O Voznyy, L Levina, P Stadler, X Lan, …Advanced Materials 24 (47), 6295-6299 | 178 | 2012 | |
N‐type colloidal‐quantum‐dot solids for photovoltaicsD Zhitomirsky, M Furukawa, J Tang, P Stadler, S Hoogland, O Voznyy, …Advanced materials 24 (46), 6181-6185 | 173 | 2012 | |
Engineering colloidal quantum dot solids within and beyond the mobility-invariant regimeD Zhitomirsky, O Voznyy, L Levina, S Hoogland, KW Kemp, AH Ip, …Nature communications 5, 3803 | 171 | 2014 |