Effect of Sunlight Intensity on Perovskite Solar Cells

The results of this joint project carried out in collaboration between Prof. Eugene Katz and Prof. Yuval Golan at BGU, and Prof. Vladimir Bulovic and Research Associate Dr. Anna Osherov from MIT are divided in two parts. The first part includes published results, and the subsequent part presents unpublished results, which we expect will be published in the near future.

The first two papers which have already been published focused on degradation of Perovskites for photovoltaic applications. [(1) M.V. Khenkin et al., “Dynamics of photoinduced degradation of perovskite photovoltaics: from reversible to irreversible processes”, ACS Applied Energy Materials, 1 (2018) 799-806 (2) R. Guo et al., “Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight”, Solar RRL, 1900270 (2019)] The next paper describes the first stage of conversion of PbSe into Perovskite materials and deals with solution deposition of PbSe onto FTO substrates suitable for solar cells. [S. Shor Peled, M. Perez, A. Osherov, V. Bulovic and Y. Golan, "Morphology Control in Chemical Solution Deposited Lead Selenide Thin Films on Fluorine-doped Tin Oxide" Thin Solid Films 710 (2020) 138256]. Last but not least, the project resulted in a very recent Nature Energy paper which outlines unified consensus for stability assessment and reporting for perovskite photovoltaics, which is expected to be a seminal, highly cited publication in the field of photovoltaics. [Khenkin, M.V., Katz, E.A., Bulovic, V., Osherov, A., et al. “Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures”, Nature Energy 5, (2020) 35–49] All published papers gratefully acknowledge support from the NSF-BSF project.

The project resulted yet in additional results which are in various stages of preparation for dissemination. A joint paper has been recently submitted and is currently in peer-review [M. Perez, S. Shor Peled, T. Templeman, A. Osherov, V. Bulovic, E.A. Katz and Y. Golan, “A Two-Step, All Solution Process for Conversion of Lead Sulphide to Methylammonium Lead Iodide Perovskite Thin Films” (2020)]. Another paper is in final stages of preparation and we expect it to be submitted in fall 2020 [S. Shor Peled, M. Perez, D. Meron, A. Osherov, V. Bulovic, E.A. Katz and Y. Golan, “Morphology Control of Perovskite Films on FTO Substrates: A Two-Step, All Solution Process for Conversion of Lead Selenide into Methylammonium Lead Iodide” (2020)]. The report includes two more chapters which are currently being prepared for publication; one deals with the effect of sunlight on functional inhomogeneity and stability of perovskite solar cells, and the other focuses on hybrid Perovskite solar cells and assessment of quantum dot solar cell stability under concentrated sunlight.