Berghoff, D., Bühler, J., Bonn, M., Leitenstorfer, A., Meier, T., & Kim, H. (2021). Low-field onset of Wannier-Stark localization in a polycrystalline hybrid organic inorganic perovskite. Nature Communications, 12(1): 5719. doi:10.1038/s41467-021-26021-4.