#perovskite #solar #photovoltaics #nanomaterials #solarcell #education #photochemistry This is a recorded Zoom lecture at the MSc level for chemistry students that are interested in Nanotechnology and Supramolecular Chemistry. Nanotechnology and Nanomaterials 9. Photoactive Nanomaterials. There are ~10 video's in this course This lecture introduces the Perovskites as a solar cell materials. Their structure and components are discussed. Than focus is on doping with zinc (II) ions as well as other lattice strain releasing small ions. 04-10-2023: Thanks to Federica Arbore for asking a question!! (at ~14:30). Learning objectives: Perovskites have the steepest rise of efficiency vs time of all solar cell materials. It is expected that they will surpass silicon in the coming years. Pb(II) is related to all high efficiency compositions, but Sn(II) can also be used (as B), next to methylammonium, formamidinium, ceasium and rubidium as monovalent cations (as A). Halogens form the anions (X), and strongly influence the bandgap. Iodides are most strongly colored ABX3 materials. Doping of perovskites can strongly influence their properties. Methylammonium is the weakest component and should be avoided. NEW ADDITION: 15-05-2024 It can be noted that in our most recent work we show that WE DO NEED METHYL AMMONIUM to get good films. Its evaporation during spin-coating and annealing plays a role. Without MA we could not get nice films!! https://doi.org/10.3390/molecules29020516 The MSc Thesis of Loreta Muscarella is now also made available: http://dx.doi.org/10.13140/RG.2.2.12819.60964 This is our (Open Access) work on Perovskites: https://doi.org/10.1021/acsami.9b03810 https://doi.org/10.3390/app10093061 https://doi.org/10.3390/app9081678 https://doi.org/10.26434/chemrxiv.5484073.v2 https://doi.org/10.13140/RG.2.1.1406.8242 With the latest addition: https://encyclopedia.pub/1266 (with in Bold, some extra info). For more information on the weak points of Methyl ammonium: Korean group with Sang Il Seok: https://doi.org/10.1002/adma.201805337 Grätzel, Saliba: https://doi.org/10.1016/j.mattod.2018.10.017 Science paper on MA fumigation: https://doi.org/10.1126/science.aba2412 Saliba: https://doi.org/10.1126/science.aat3583 See also Grätzel at &t=2560: https://www.youtube.com/watch?v=sNIReIi99nU&t=2560 (at 42:40) NEW: see also Peer review file of recent Nat Comm. paper of René Janssen: https://www.nature.com/articles/s41467-020-19062-8#additional-information https://doi.org/10.1038/s41467-020-19062-8 "Indeed, it is widely accepted in the research society that MA-based perovskites are less stable concerning humidity and thermal stress". For more information on Perovskites in general: Special issue of Account of Chemical Research on Perovskites: https://doi.org/10.1021/acs.accounts.6b00067 EES: https://doi.org/10.1039/C6EE03397K Mat. Today: https://doi.org/10.1016/j.mtener.2018.07.003 It was recently shown that Bi doping only induces structural defects that lead to additional defect states: https://pubs.acs.org/doi/10.1021/jacs.7b11125 rubidium in halide perovskites been disproved: https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201802033 QUIZ 1: Which pop-song title did I use in this talk? 11-02-2022: THE ANSWER IS: https://www.youtube.com/watch?v=VDz1yeDbHB8&list=LLnxnZhN6aJrbych8WRIqAMw&index=44 QUIZ 2: Is there new information on the composition of recent record materials? QUIZ 3: How much current (mA/cm^2) would a perovskite cell give if it would reach the Shockley Queisser limit? (if it gives 1.1 V). Perovskite talk 1 F EDITED 4B-Williams-Perovskites-2020-Supra-Nano-v4