We combine fundamental studies of the photophysics of semiconductor quantum dots adsorbed on surfaces with realizations of new designs for third-generation photovoltaic cells incorporating quantum dots.
We have introduced several new designs for a hybrid quantum-dot - dye sensitized cells. Properly designed quantum dots have also been shown to photoinduce a dipole, leading to modification of the band alignment in sensitized cells. Our current efforts mostly focus on methylammonium, formamidinium and cesium lead halide perovskite materials (and the very peculiar self-healing they exhibit) as well as their hybrids with colloidal semiconductor nanocrystals for photovoltaic applications.
Recent publications
-
M. Kazes, T. Udaybhaskararao, S. Dey, D. Oron, “The Effect of Surface Ligands in Perovskite NCs: Extending In and Reaching Out”, Acc. Chem. Research 54, 1409 (2021).
-
E. Sanders, Y. Soffer, T. Salzillo, M. Rosenberg, O. Bar-Elli, O. Yaffe, E. Joselevich, D. Oron, “Remanent polarization and strong photoluminescence modulation by an external electric field in epitaxial halide perovskite nanowires”, ACS Nano 15, 16130 (2021).
-
D. R. Ceratti, R. Tenne, A. Bartezzaghi, L. Cremonesi, L. Segev, V. Kalchenko, D. Oron, M. A. C. Potenza, G. Hodes, D. Cahen, “Self-Healing and Light-Soaking in MAPbI3: the effect of H2O”, Adv. Mater. 2110239 (2022).
-
K. D. Crans, M. Bain, S. Bradforth, D. Oron, M. Kazes, R. L. Brutchey, “The Surface Chemistry of Ionic Liquid-Treated CsPbBr3 Quantum Dots”, J. Chem. Phys. 158, 174709 (2023).
-
P. Singh, Y. Soffer, D. Ceratti, M. Elbaum, D. Oron, G. Hodes, D. Cahen, “A-site Cation Dependence of Self-Healing in Polycrystalline APbI3 Perovskite Films”, ACS Energy Lett. 8, 2447 (2023).
-
X. Liu, Z. Wu, J. Han, H. Zhong, X. Wang, J. Yang, Z. Zhang, D. Oron, and H. Lin “Epitaxial 2D PbS nanosheet-formamidinium lead triiodide heterostructure enabling high-performance perovskite solar cells”, Adv. Funct. Mater. 2304140 (2023).