The Auger effect in semiconductor nanoparticles causes nonradiative recombination of electron-hole pairs and significantly impacts their photophysical behavior. Improving the fundamental understanding of the Auger effect is imperative and remains an active field of research. Previous works have primarily focused on nanocrystals in the strong confinement regime, while the weak confinement regime in intermediate-sized systems is less explored due to several long-standing challenges. In a recent report 1 , Peng Huang and co-authors describe highquality perovskite nanocrystals in the weak confinement regime. They experimentally reveal a superlinear increase in Auger recombination time with nanocrystal volume and provide a successful interpretation using a nonlocal interaction model. This work challenges the universal volume scaling law 2,3 and deepens our fundamental understanding of the Auger effect at the limit between bulk and confined materials.

Semiconductor nanocrystals, also known as quantum dots, have attracted significant attention in recent decades. Apart from the high degree of control over their composition and shape, the size of nanocrystals can be manipulated at the atomic level, giving rise to the quantum confinement of electrons and holes. This effect results in discrete energy levels and size-tunable bandgap, allowing for the absorption and emission of light across a wide range of wavelengths. Nanocrystals are thus highly attractive for applications in optoelectronic devices such