About Our Research
Prof. Lifshitz's group is among the pioneers who initiated the exciting field of nanomaterials for nanotechnology. The group employs a multifaceted approach for the study of low dimensional semiconductor solids, such as colloidal and spray prepared nanostructures (dots, rods, wires, platelets and polypods) and their corresponding core/shell hetero-structures, single and multi-flake transition metal layered compounds, bulk and nanostructure perovskites and magnetically doped nanostructures. These nanomaterials are of scientific and technological interest due to their tunable electronic properties by variation of size, shape and composition, leading to unique physical properties, un-parallel to the analogous bulk materials. The Lifshitz group has made a notable contribution in the development of new materials, and moreover, in the depth of understanding of the fundamental features which govern the size-related physical properties. The studies include the investigation of the nature of excitons and multiple excitons, radiative recombination, Auger non-radiative relaxations, Coulomb and exchange interactions, binding energies, diamagnetic shift, Zeeman split, Landé g-factors, spin polarization and the Rashba effect. The investigations are carried out by following the behavior of spins as a designation for the electronic properties, using complex optical and magneto-optical spectroscopy methodologies, including optically detected magnetic resonance (ODMR), thermal and microwave modulated photoluminescence, while monitoring an ensemble or a single nanostructure at variable temperatures, as well as combining microscopy and spectroscopy e.g., confocal/AFM or confocal/ODMR. The experimental work is corroborated by theoretical modeling, including band structure calculations, spin interactions, Auger processes, in addition to carrier transport via small nanostructure assemblies. The accumulated knowledge is applied to development of prototype nanostructure-based devices, such as solar cells, Q-switch, optical gain device and biological tags.
Open Positions Available!
We are looking for motivated M.Sc. and Ph.D. students to join the group. We also have positions available for post-doctoral researchers. If you are interested in joining our group, feel free to contact Prof. Efrat Lifshitz by email or phone at: