In this review the evolution of the concepts of AgHal spectral sensitization by the organic dyes is presented. The author comes to the unexpected conclusion that the very first chemical theories of spectral sensitization are, in essence, correct. One hundred years of detailed investigations of spectral sensitization have, in fact, proved the correctness of the early chemical concepts of spectral sensitization processes.
B. I. Shapiro, "Chemistry of Spectral Sensitization Processes–A Review" in Journal of Imaging Science and Technology, 2002, pp 89 - 100, https://doi.org/10.2352/J.ImagingSci.Technol.2002.46.2.art00002