Hannu Pasanen, with the permission of the Faculty of Engineering and Natural Sciences presented his academic dissertation on the 29th of October 2021 at Tampere University, Hervanta Campus. The topic of his academic dissertation was “Discovering Perovskite Photophysics with Transient Reflectance Spectroscopy”. His opponent, Ivan Scheblykin approved the doctoral dissertation. Congratulations Hannu Pasanen! He continues his research in our group as a postdoctoral researcher.