Stanchik A, Gremenok V, Hryhal P, et al. Influence of stoichiometry on phase composition and crystal structure of compounds of the AgxCu1−xGaSe2 (0.0 ≤ x ≤ 1.0) system used to obtain photocathodes. Eur. J. Phys. Funct. Mater. 2026;10(1):34-55. doi:10.32523/ejpfm.2026100103