Spatially resolved fluorescence of caesium lead halide perovskite supercrystals reveals quasi-atomic behavior of nanocrystals oleh Dmitry Lapkin, Christopher Kirsch, Jonas Hiller, Denis Andrienko, Dameli Assalauova, Kai Braun, Jerome Carnis, Young Yong Kim, Mukunda Mandal, Andre Maier, Alfred J. Meixner, Nastasia Mukharamova, Marcus Scheele, Frank Schreiber, Michael Sprung, Jan Wahl, Sophia Westendorf, Ivan A. Zaluzhnyy, Ivan A. Vartanyants