Prof. Ramūnas ALEKSIEJŪNAS is a full professor in Vilnius University . He received his PhD in Physics from Vilnius University in 2005. After holding various academic and research positions, he became a professor at the Faculty of Physics, Vilnius University, in 2022. His research focuses on the application of optical time-resolved spectroscopic techniques to investigate electron dynamics in various semiconductors. A significant part of his work has been devoted to studying non-equilibrium carrier recombination and diffusion processes in disordered materials, primarily In(Al)GaN and perovskite systems. He is also interested in adapting and developing various pump-probe technique modifications for the characterization of different materials and structures—including scintillators, scintillating fibers, oxides, and narrow-bandgap semiconductors—as well as in creating measurement tools based on these methods.

In February 2026, Prof. ALEKSIEJŪNAS will be invited to NITech by Dr. Kato fro collaboration.

Title of given lecture in NITech: Time-resolved optical techniques for investigation of recombination pathways in semiconductors