“Thermal management enables bright and stable perovskite light-emitting diodes,” L. Zhao, K. Roh, S. Kacmoli, K. Al Kurdi, S. Jhulki, S. Barlow, S.R. Marder, C. Gmachl, B.P. Rand, Adv. Mater., 32, 2000752 (2020).