In our case, at the first stage of photogeneration after absorption by the cationic dye (CPD 1-3) molecule (Dye + , BF4 -) of a light quantum with energy hν (since the colourless counterion BF4 -of the cationic dye molecule does not absorb photons in the visible region, only a coloured cation of CPD is shown below and is indicated as Dye + in schemes ( Table . The photovoltaic characteristics of the PPCs samples under their illumination by white LED irradiation (I = 60 W/m2) and the results of quantum-chemical calculations of the HOMO energy of the molecules of CPDs 1-3 . (The results of calculation by the PM3 method ).