On Wednesday, November 16th, a public lecture “Energy-band Structure of the Electronic Spectrum and Optical Transitions in Plumbous Halide Perovskites for the New Generation of Solar Elements” will be held in the Samara University.The event will be held in the inter-university media center, at the following address: Moskovskoe Shosse, 34 bld. 15, lecture hall No.408.The lecture starts at 10:00.Lecturer: Viktor Ushankhay, Doctor of Physical and Mathematical Sciences, Chief Research Associate of the Dubna Joint Institute for Nuclear Research Laboratory of Theoretical Physics named after N. Bogolyubov.