2026. Energy Structure of the Long-Wavelength Absorption Spectra Edge and Its Relationship to the Urbach Energy Eu and the Optical Band Gap Eg of C60 Films with Thicknesses of 5000 and ~1000 nm. Ukrainian Journal of Physics. 71, 9 (Sep. 2026), 705. DOI:https://doi.org/10.15407/ujpe71.9.705.