Quantum dot enabled photovoltaic cells

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

  1. 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).

  2. 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).

  3. 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).

  4. 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).

  5. 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).

  6. 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).