Skills of Andres F. Gualdron-Reyes are related with the photo(electro)chemical characterization of semiconductor based materials, pollutant degradation in wastewaters, and the fabrication of photovoltaic devices: quantum dots and perovskites solar cells. His actual reseach is focusing on the synthesis and photophysical characterization of nanocrystals based on chalcogenides and perovskites, with potential application in photo(electro)catalysis, optoelectronics and photovoltaics.