Colloidal LiYF4:Pr nanocrystals downsized to 10 nm – Part 2: spectroscopic properties Simon Spelthann, Michael Steinke, Rajesh Komban, Horst Weller, Christoph Gimmler, Axel Ruehl and Detlev Ristau EPJ Web Conf., 267 (2022) 01034 Published online: 18 October 2022 DOI: 10.1051/epjconf/202226701034