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Material Science and Engineering
Main energy field:
My research long-term vision is to create atomically designed nanocrystals, that will serve as technology enablers at the place where current materials and methods reach their physical limit. The prime vision is to create materials in an atom-by-atom approach, where the selection of composition, morphology, and assemblies results in emerging functionalities. Upon implantation into more complex structures, these materials result in devices with never-before-seen characteristics based on quantum confinement of excitons, morphological control, and cooperative effects. Recent examples are the utilization of quantum and dielectric effects in cesium lead halides nanoplates and nanowires. I showed a way to control the thickness of nanoplates with monolayer precision and engineer light-matter interactions to generate excitons with narrow energy bands and bright emissions. Such engineered materials were recently implemented by us into waveguides serving as single-photon sources. In another example, nanocrystals assembled into arrays displayed unique, coherent superfluorescence when excited with a free electron beam.
PhD – 2015 – HUJI, Uri Banin Oded Millo
MSc – 2011 – HUJI, Danny Porath
BSc – 2009 – HUJI, Physics and Chemistry
Roles, Chairs, prizes
2022 The Wolf foundation – Krill Prize for Excellence in Scientific Research
2022 Alexander Goldberg Technion research prize
2018-2020 Alon Fellowship
2018-2020 Chair of Green/Detroit, chapter fellow
“The Role Silver Nanoparticles Plays in Silver-Based Double-Perovskite Nanocrystals”, S. Levy, S. Khalfin, N.G. Pavlopoulos, Y. Kauffmann, G. Atiya, R. Shechter, S. Shaek, S. Dror, Y. Bekenstein, Chem. Mater. 2021, 33, 7, 2370–2377 (2020) IMPCT 9.56.
“Thin Layer Buckling in Perovskite CsPbBr3 Nanobelts”, H. Massasa, R. Strassberg, A. Vurgaft, Y. Kauffmann, N. Cohen, and Y. Bekenstein, Nano Lett .2021 21, 5564–5571. IMPCT 11.2.
“Self-Healing of Crystal Voids in Double Perovskite Nanocrystals Is Related to Surface Passivation”, S. Khalfin, N. Veber, S. Dror, R. Shechter, S. Shaek, S. Levy, Y. Kauffmann, L. Klinger, E. Rabkin, and Y. Bekenstein, Adv. Funct. Mater, 2021 2110421 IMPCT 18.8.
“Non-Heteroepitaxial CsPbBr3/Cs4PbBr6 Interfaces Results in Non-Passivated Bright Bromide Vacancies”, E. Cohen, A. Nagal, M. Fouchier, L. Popilevsky, Y. Kauffmann, S. Khalfin, S. Dror L, Y. Bekenstein, Chem. Mater. 2022, 34, 12, 5377–5385 IMPCT 9.
“Inverse size-dependent Stokes shift in strongly quantum confined CsPbBr3 perovskite nanoplates“, A. Vurgaft, R. Strassberg, R. Shechter, R. Lifer, C. Dahl, E.M. Chan, Y. Bekenstein, Nanoscale, 2022, 14, 17262-172708 IMPCT 8.
“Highly Controlled Zigzag Perovskite Nanocrystals Enabled by Dipole‐Induced Self‐Assembly of Nanocubes for Low‐Threshold Amplified Spontaneous Emission and Lasing”, C. Zhang, J. Chen, L. Turyanska, J. Wang, W. Wang, L. Wang, L. Kong, K. Wu, J. Yao, H. Yao, Z. Yang, W. Li, Y. Bekenstein, Y. Wang, G. Jia, X. Yang, Adv. Funct. Mater, 2023 33,3,2211466 IMPCT 18.8.