Photoresponse enhancement in TiO2 thin films by incorporation Ni and Cr nanoparticles using sol–gel method. - Solis-Cortazar, J. C.; Zamudio-Torres, I.; Rojas-Blanco, L.; Perez-Hernandez, G.; Arellano-Cortaza, M.; Castillo-Palomera, R.; de los Monteros, A. Espinosa; Ramirez-Morales, E. (Journal of Materials Science: Materials in Electronics, 2022)