Prof. Dirk Poelman studied physics and obtained his Ph.D. on rare earth doped sulfide electroluminescent thin films at Ghent University (Belgium). Since 2001, he has a permanent appointment at Ghent University, where he is leading the research group Lumilab. He is a full professor since 2012. Dirk Poelman has experience in different fields of solid state physics research, including thin film deposition and optical characterization, photo-, electro- and cathodoluminescent materials, structural and electrical defects in semiconductors, photocatalysis for air purification, x-ray analytical techniques and human vision. His current research is focused on inorganic phosphors for white LEDs and displays and persistent luminescent materials for safety illumination and medical imaging. He has (co)organized numerous conferences, such as EL2002 (Int. Conf. on Electroluminescence), ICTF14 (Int. Conf. on Thin Films) and "Phosphoros", the first international conference on persistent luminescence in 2011. Dirk Poelman is member (and former president) of the Belgian National Committee for Crystallography, member of the program board of DUBBLE (the Dutch-Belgian beam line at the ESRF synchrotron, Grenoble), board member of the scientific and technical research center diamond (WTOCD) and holds several administrative functions at the university. In addition, he lectures numerous courses on Bachelor and Master level.