International Journal of Photoenergy has retracted the article titled “Light-Induced Tyrosine Radical Formation from Ruthenium-Tyrosine Complex Anchored to SnO2 Semiconductor” [1], as it is essentially identical in content with a previously published paper [2]. In particular, the article contains identical figures (namely Figures 4b, 5a, and 5b) with the above mentioned paper. While in the earlier published paper, the figures described the Ru-complex attached to TiO2, the same figures have now been used in this article to describe the electron transfer between the Ru-complex and the SnO2 semiconductor.